Publications

Home | Journal Papers | Books Published | Book Chapters | Monographs | Conference Papers | Technical Reports in Unrefereed Publications | Invited Seminars, Colloquia | Humboldt Award (Germany) seminars presented | Invited Short Courses

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__Journal Papers__:

Johnson, C.D. and R.E. Skelton, “Optimal Desaturation of Momentum Exchange Control Systems,” AIAA Journal, Vol. 9, No. 1, pp. 12-22, January 1971.

Skelton, R.E., “An Algorithm for an Approximation of the Minimal Controller Problem,” Journal of Guidance and Control, Vol. 1, No. 1, pp. 90-93, Jan.-Feb. 1978.

Skelton, R.E. and P.W. Likins, “Orthogonal Filters for Model Error Compensation in the Control of Nonrigid Spacecraft,” AIAA Journal of Guidance and Control, Vol. 1, No. 1, Jan.-Feb. 1978, pp. 41-49. (Selected by USSR for translation in the USSR Journal PAKETHA TEXH KA KOCHMOHABT KA, Mar. 1978.)

Skelton, R.E., “On Cost-Sensitivity Controller Design Methods for Uncertain Dynamic Systems” (Invited paper), Journal Astronautic Sciences, Vol. XXVII, No. 2, pp. 181-205, Apr-June 1979.

Skelton, R.E., “Observability Measures and Performance Sensitivity in the Model Reduction Problem,” International Journal of Control, Vol. 29, No. 4, pp. 541-556, 1979.

Skelton, R.E., “Application of Disturbance Accommodating Control in the Model Error Problem,” Journal of Interdisciplinary Modeling and Simulation, Vol. 3, No. 1, pp. 47-62, 1980.

Skelton, R.E., “Cost Decomposition of Linear Systems, with Application to Model Reduction,” International Journal of Control, Vol. 32, No. 6, pp. 1031-1055, 1980.

Hughes, P.C. and R.E. Skelton, “Controllability and Observability for Linear-Matrix-Second-Order Systems,” Journal of Applied Mechanics, Vol. 47, No. 2, pp. 415-421, June 1980.

Hughes, P.C. and R.E. Skelton, “Controllability and Observability for Flexible Spacecraft,” Journal of Guidance and Control, Vol. 3, No. 5, pp. 452-460, Sept. 1980.

Skelton, R.E. and P.C. Hughes, “Modal Cost Analysis for Linear-Matrix-Second-Order Systems,” Journal of Dynamic Systems, Vol. 102, pp. 151-158, Sept. 1980.

Skelton, R.E., "Adaptive Orthogonal Filters for Compensation of Model Errors in Matrix-Second-Order Systems," Journal of Guidance and Control, Vol. 4, No. 2, pp. 214-221, Mar. 1981.

Hughes, P.C. and R.E. Skelton, “Modal Truncation for Flexible Spacecraft,” Journal of Guidance and Control, Vol. 4, No. 3, pp. 291-297, May-June 1981.

Yedavalli, R.K. and R.E. Skelton, “Controller Design for Parameter Sensitivity Reduction in Linear Regulators,” Optimal Control Applications and Methods, Vol. 3, pp. 22l-240, 1982.

Skelton, R.E., P.C. Hughes and H.B. Hablani, “Order Reduction for Models of Space Structures Using Modal Cost Analysis,” Journal of Guidance and Control, Vol. 5, No. 4, pp. 351-357, July-Aug. 1982.

Skelton, R.E. and A. Yousuff, “Component Cost Analysis of Large Scale Systems,” International Journal of Control, Vol. 37, No. 2, pp. 285-304, 1983.

Skelton, R.E. and M.L. DeLorenzo, “Selection of Noisy Actuators and Sensors in Linear Stochastic Systems,” Large Scale Systems, Vol. 4, pp. 109-136, 1983.

Skelton, R.E., “Comments on Order Reduction of Linear State Space Models via Optimal Approximation of the Non-Dominant Modes,” Large Scale Systems, Vol. 5, pp. 263-264, 1983.

Skelton, R.E. and J. Davis, “Comments on Realization and reduction of Markovian Models from Nonstationary Data,” IEEE Transactions on Automatic Control, Vol. AC-28, No. 4, Apr. 1983.

Skelton, R.E. and Di Chiu, “Optimal Selection of Inputs and Outputs in Linear Stochastic Systems,” Journal Astronautical Sciences, Vol. 31, No. 3, pp. 399-414, July 1983.

Yedavalli, R.K. and R.E. Skelton, “Determination of Critical Parameters in Large Flexible Space Structures with Uncertain Modal Data,” Journal Dynamics Systems, Measurement, and Control, Vol. 105, pp. 238-244, Dec. 1983.

Yousuff, A. and R.E. Skelton, “Controller Reduction by Component Cost Analysis,” IEEE Transactions on Automatic Control, Vol. AC-29, No. 3, 1984.

Skelton, R.E. and D.A. Wagie, “Minimal Root Sensitivity in Linear Systems,” Journal of Guidance, Control and Dynamics, Vol. 7, No. 5, Sept. 1984.

Davis, J. and R.E. Skelton, “Another Balanced Controller Reduction Algorithm,” System and Control Letters, Vol. 4, pp. 79-83, 1984.

Yousuff, A. and R.E. Skelton, “A Note on Balanced Controller Reduction,” IEEE Transactions on Automatic Control, Vol. AC-29, No. 3, Mar. 1984.

Frazho, A.E., R.E. Skelton and D.A. Wagie, “Compliments to Cost-Equivalent Realizations,” International Journal of Control, Vol. 40, No. 5, pp. 1045-1048, 1984.

Skelton, R.E. and A. Hu, “Modeling Structures for Control Design,” Computers and Structures, Vol. 20, No. 1-3, pp. 303-309, 1985.

Yousuff, A., D.A. Wagie and R.E. Skelton, “Linear System Approximation via Covariance Equivalent Realizations,” Journal Mathematical Analysis and Applications, Vol. 106, No. 1, pp. 91-115, Feb. 1985.

Skelton, R.E. and M.L. DeLorenzo, “Space Structure Control Design by Variance Assignment,” Journal Guidance Control Dynamics, July 1985.

Berry, D.T., T.Y. Yang and R.E. Skelton, “Dynamics and Control of Lattice Beams Using Complex and Simplified Finite Element Models,” Journal Guidance Control Dynamics, Vol. 8, No. 5, pp. 612-619, Sept. 1985.

Wagie, D.A. and R.E. Skelton, “Model Reduction and Controller Synthesis in the Presence of Parameter Uncertainty,” Automatica, Vol. 2, No. 3, pp. 295-308, 1986.

Yousuff, A. and R.E. Skelton, “An Optimal Controller Reduction by Covariance Equivalent Realizations,” IEEE Transactions on Automatic Control, Vol. AC-31, No. 1, pp. 56-60, Jan. 1986.

Skelton, R.E. and P. Kabamba, “Balanced Gain and their Significance in L2Model Reduction,” IEEE Transactions on Automatic Control, Vol. AC-31, No. 8, pp. 796-797, Aug. 1986.

Skelton, R.E. and B.D.O. Anderson, “Q-Markov Covariance Equivalent Realizations,” International Journal of Control, Vol. 44, No. 5, pp. 1477-1490, 1986.

Wagie, D.A. and R.E. Skelton, “A Projection Approach to Covariance Equivalent Realizations of Discrete Systems,” IEEE Transactions on Automatic Control, Vol. AC-31, No. 12, pp. 1114-1120, Dec. 1986.

Collins, E.G. and R.E. Skelton, “A Theory of State Covariance Assignment for Discrete Systems,” IEEE Transactions on Automatic Control, Vol. AC-32, No. 1, Jan. 1987.

Hu, Anren, R.E. Skelton and T.Y. Yang, “Modeling and Control of Beam-like Structures,” Journal Sound and Vibration, Vol. 117, No. 3, pp. 475-496, 1987.

Hotz, A. and R.E. Skelton, “Covariance Control Theory,” International Journal Control, Vol. 46, No. 1, pp. 13-32, 1987.

Collins, E.G. and R.E. Skelton, “A set of Q-Markov Covariance Equivalent Models of Discrete Systems,” International Journal Control, Vol. 46, No. 1, pp. 1-12, 1987.

de Villemagne, C. and R.E. Skelton, “Model Reductions Using a Projection Formulation,” International Journal Control, Vol. 46, No. 6, 2141-2169, 1987.

Desai, U.B. and R.E. Skelton, “Partially Nested Q-Markov Covariance Equivalent Realizations,” Control Theory and Advanced Technology, Vol. 3, No. 4, pp. 323-342, Dec. 1987.

Anderson, B.D.O. and R.E. Skelton, “The Generation of All Q-Markov COVERS,” IEEE Circuits and Systems, Vol. 35, No. 4, pp. 375-384, Apr. 1988.

King, A.M., U.B. Desai and R.E. Skelton, “A Generalized Approach to Covariance Equivalent Realizations for Discrete Systems,” Automatica, Vol. 24, No. 4, pp. 507-515, July 1988.

de Villemagne, C. and R.E. Skelton, “Controller Reduction Using Canonical Interactions,” IEEE Transactions on Automatic Control, Vol. 33, No. 8, 1988.

Skelton, R.E. and Norris, G., “Selection of Sensors and Actuators in the Presence of Correlated Noise,” Control Theory and Advanced Technology, Vol. 4, No. 1, pp. 53-71, 1988.

Hu, A. and R.E. Skelton, “Convergence Properties of Modal Costs for Certain Distributed Parameter Systems,” Journal Vibration, Acoustics, Stress and Reliability in Design (ASME), Vol. 111, pp. 272-277, July 1989.

Skelton, R.E., “Model Error Concepts in Control Design,” International Journal Control, Vol. 49, No. 5, pp. 1725-1753, 1989.

Skelton, R.E. and M. Ikeda, “Covariance Controllers for Linear Continuous-Time Systems,” International Journal Control, Vol. 49, No. 5, pp. 1773-1785, 1989.

Skelton, R.E. and B.D.O. Anderson, “Weighted Q-Markov Covers,” International Journal Control, 1989.

Norris, G. and R.E. Skelton, “Selection of Dynamic Sensors and Actuators in the Control of Linear Systems,” ASME Journal Dynamic Systems, Measurement and Control, Vol. 111, pp. 389-397, Sept. 1989.

Williamson, D. and R.E. Skelton, “Optimal Q-Markov Cover for Finite Wordlength Implementation,” Math. Systems Theory, Vol. 22, No. 4, pp. 255-273, 1989.

Skelton, R.E. and Dong Da, “Component Model Reduction in Canonical Correlation Coordinates,” Computational Mechanics, 1989.

Hsieh, C., R. Skelton and F. Damra, “Minimum Energy Controllers with Inequality Constraints on Output Variances,” Optimal Control Application and Methods, Vol. 10, No. 4, pp. 347-366, 1989.

Skelton, R.E. and B.D.O. Anderson, “Weighted Q-Markov Covariance Equivalent Realization,” International Journal Control, 1989.

Okada, K. and R.E. Skelton, “Sensitivity Controller for Uncertain Systems,” AIAA J. Guidance, Control and Dynamics, Vol. 13, No. 2, Mar. 1990.

Hsieh, C. and R.E. Skelton, “All Covariance Controllers for Linear Discrete Time Systems,” IEEE Transactions on Automatic Control, Vol. 35, No. 8, Aug. 1990.

Damra, F.M., R.E. Skelton and J. Xu, “Optimal Covariance Control,” Optimal Control Application and Methods, 1990.

Xu, J., R.E, Skelton and G. Zhu, “Upper and Lower Covariance Bounds for Perturbed Linear Systems,” IEEE Transactions on Automatic Control, Vol. 35, No. 8, Aug. 1990, pp. 944-948.

Xu, J. and R. Skelton, “Output Feedback Controllers of Suboptimality Degree ?,” IEEE Transactions on Automatic Control, Vol. 35, No. 12, Dec. 1990.

Williamson, D., R.E. Skelton and G. Zhu, Moment Matching Model Reduction for Multirate Linear Systems,” International Journal Control, Vol. 52, No. 6, pp. 1279-1294, 1990.

Yasuda, K. and R. Skelton, “Assigning Controllability and Observability Gramians in Feedback Control,” Journal Guidance Control Dynamics, Vol. 14, No. 5, pp. 878-885, Sept.-Oct. 1991.

Zhu, G. and R. E. Skelton, “Mixed L2 and L2 Problems by Weight Selection in Quadratic Optimal Control,” International Journal Control, Vol. 63, No. 5, pp. 1161-1176, 1991.

Skelton, R., J. Xu and K. Yasuda, “On the Freedom in Covariance Control,” International Journal Control, 1991.

Hsieh, C., J. Kim, K. Liu, G. Zhu and R. Skelton, “Control of Large Flexible Structures -- An Experiment on the NASA Mini-Mast Facility,” IEEE Control Magazine, Vol. 8, pp. 13-21, Oct. 1991.

Smith, M., K. Grigoriadis and R. Skelton, “Optimal Mix of Passive and Active Control in Structures,” Journal of Guidance, Control and Dynamics, Vol. 15, No. 4, pp. 912-919, July-Aug. 1992.

Liu, K. and R. Skelton, “The Q-Markov Cover and its Application to Flexible Structure Identification,” Journal Guidance Control Dynamics, Vol. 57, No. 2, 1992.

Skelton, R., B. Hanks and M. Smith, “Structure Redesign for Improved Dynamic Response,” Journal Guidance Control Dynamics, Vol. 15, No. 5, pp. 1272-1278, 1992.

Skelton, R. E. and G. Zhu, “Optimal L? Bounds for Disturbance Robustness,” IEEE Transactions on Automatic Control, Vol. 37, No. 10, pp. 1568-1572, 1992.

Xu, J. and R. Skelton, “An Improved Covariance Assignment Theory for Discrete Systems,” IEEE Transactions on Automatic Control, Vol. 37, No. 10, pp. 1588-1591, 1992.

Zhu, G. and R. Skelton, “Robust Discrete Controllers Guaranteeing l2 and l? Performances,” IEEE Transactions on Automatic Control, Vol. 37, No. 10, pp. 1620-1625, 1992.

Liu, K., R. Skelton and K. Grigoriadis, “Optimal Controllers for Finite Wordlength Implementation,” IEEE Transactions on Automatic Control, Vol. 37, No. 9, pp. 1294-1304, 1992.

Zhu, G., and R. Skelton, “Robust Properties of Periodic Discrete and Multirate Systems,” IEEE Transactions on Automatic Control, Vol. 37, No. 3, pp. 610-615, 1992.

Zhu, G., and R. Skelton, “A Two-Riccati, Feasible Algorithm for Guaranteeing Output L? Constraints,” Journal of Dynamic Systems, Measurement and Control, Vol. 114, No. 3, pp. 329-338, 1992.

Liu, Ketao and Robert E. Skelton, “Integrated Modeling and Controller Design with Application to Flexible Structure Control,” Automatica, Vol. 29, No. 5, pp. 1291-1314, 1993.

Skelton, R.E., “The Routh Test and Covariance Control,” C-TAT, Vol. 9, No. 3, pp. 691-720, 1993.

Skelton, R.E. and T. Iwasaki, "Liapunov and Covariance Controllers," International Journal Control, Vol. 57, No. 3, pp. 519-536, 1993.

Zhu, G. and R.E. Skelton, “MIMO L2/L? Constraints in Large Flexible Structure Control -- An Experiment on the JPL LSCL Facility,” Journal of Society of Instrument and Control Engineers, Vol. 32, No. 4, pp. 284-289, 1993.

Liu, K. and R. E. Skelton, “Q-Markov Covariance Equivalent Realization and its Application to Flexible Structure Identification,” Journal of Guidance, Control, and Dynamics, Vol. 16, No. 2, Mar.-Apr. 1993.

Yasuda, K., R.E. Skelton and K.M. Grigoriadis, “Covariance Controllers: A New Parametrization of the Class of All Stabilizing Controllers,” Automatica, Vol. 29, No. 3, pp. 785-788, 1993.

Iwasaki, T. and R.E. Skelton, “n the Observer-based Structure of Covariance Controllers,”Systems and Control Letters, Vol. 22, pp. 17-25, 1994.

Liu, K., R.E. Skelton, and J.P. Sharkey, “Modeling Hubble Space Telescope Flight Data by Q-Markov Cover Identification,” Journal of Guidance, Control and Dynamics, Vol. 17, No. 2, pp. 250-256, Mar.-Apr. 1994.

Yaz, E. and R.E. Skelton, “Parametrization of All Linear Compensators for Discrete-Time Stochastic Parameter Systems,” Automatica, Vol. 30, No. 6, pp. 945-955, June 1994.

Zhu, G. and R. E. Skelton, “Integrated Modeling and Control for the Large Spacecraft Control Laboratory Experiment Facility,” Journal of Guidance Control and Dynamics, Vol. 17, No. 3, pp. 442-450, May-June 1994.

Iwasaki, T. and R.E. Skelton, “All Controllers for the General H? Control Problem: LMI Existence Conditions and State Space Formulas,” Automatica, Vol. 30, No. 8, Aug. 1994.

Stoustrup, J., R. Skelton and T. Iwasaki, “The H? Control Problem Using Static Output Feedback,” International Journal of Robust and Nonlinear Control, Special Issue on H? Vol. 4, No. 4, pp. 449-456, July 1994.

Grigoriadis, K. M., A. E. Frazho and R. E. Skelton, “Application for Computation of Positive Toeplitz Matrices,” IEEE Transactions on Signal Processing, Vol. 42, July 1994.

Skelton, R. E., J. H. Xu and K. Yasuda, “Minimal Energy Covariance Control,” International Journal of Control, Vol. 59, No. 6, pp. 1567-1578, July 1994.

Iwasaki, T., R. E. Skelton and J. C. Geromel, “Linear Quadratic Suboptimal Control with Static Output Feedback,” Systems and Control Letters, Vol. 23, pp. 421-430, 1994.

Grigoriadis, K. M. and R. E. Skelton, “Alternating Convex Projection Methods for Covariance Control Design,” International Journal of Control, Vol. 60, No. 6, pp. 1083-1106, 1994.

Iwasaki, T. and R. E. Skelton, “Parametrization of All Stabilizing Controllers via Quadratic Lyapunov Functions,” Journal on Optimization Theory and Applications, Vol. 85, No. 2, May 1995.

Zhu, G., K.M. Grigoriadis and R. E. Skelton, “Covariance Control Design for the Hubble Space Telescope,” AIAA Journal of Guidance, Control, and Dynamics, Vol. 18, No. 2, pp. 230-236, May 1995.

Zhu, G., R. E. Skelton and Pingkang Li, “Q-Markov Cover Identification Using Pseudo-Random Binary Signals,” International Journal of Control, Vol. 62, No. 6, pp. 1273-1290, 1995.

Iwasaki, T. and R. E. Skelton, “The XY-centring Algorithm for the Dual LMI Problem: A New Approach to Fixed-order Control Design,” International Journal of Control, Vol. 62, No. 6, pp. 1257-1272, 1995.

Iwasaki, T. and R. E. Skelton, “A Unified Approach to Fixed-Order Controller Design via Linear Matrix Inequalities,” Mathematical Problems in Engineering, Vol. 1, No. 1, pp. 59-75, 1995.

Iwasaki, T. and R. E. Skelton, “All Fixed-Order H? Controllers: Observer-Based Structure and Covariance Bounds,” IEEE Transactions on Automatic Control, Vol. 40, No. 3, IETAA9, pp. 512-516, Mar. 1995.

Skelton, R. E. and T. Iwasaki, “Eye on Education: Increased Roles of Linear Algebra in Control Education,” IEEE Control Systems Magazine, Vol. 15, No. 4, pp. 76-90, Aug. 1995.

Zhu, G. G. and R. E. Skelton, “L2 to L? Gains for Sampled-data Systems,” International Journal of Control, Vol. 61, No. 1, pp. 19-32, 1995.

Grigoriadis, K.M. and R.E. Skelton, “Alternating convex projection methods for discrete-time covariance control design,” Journal of Optimization Theory and Applications, vol.88, no.2, pp.399-432, Feb. 1996.

Iwasaki, T. Skelton, R. and Corless, M., “A Recursive Construction Algorithm for Covariance Control”, IEEE Transaction on Automatic Control, March 1996.

Lu, J. and Skelton, R., “Mean-Square Small Gain Theorem for Stochastic Control: Discrete-Time Case,” IEEE, June 1997.

Skelton, R.E. and G. Shi, “Iterative identification and control using a weighted q-Markov COVER with measurement noise,” Signal Processing, vol.52, no.2, pp.217-34, July 1996.

Grigoriadis, K.M. and R.E. Skelton, “Low-order control design for LMI problems using alternating projection methods,” Automatica, vol.32, no.8, pp.1117-25, Aug. 1996.

Grigoriadis, K.M., G. Zhu, and R.E. Skelton, “Optimal redesign of linear Systems,” Journal of Dynamic Systems, Measurement and Control, vol.118, no.3, pp.598-605, Sept. 1996.

Zhu, G., M.A. Rotea and R. Skelton “A convergent algorithm for the output covariance constraint control problem,” SIAM Journal on Control and Optimization, vol. 35, no.1, pp.341-61, Jan. 1997.

Skelton, R.E. and J. Lu, “Iterative identification and control design using finite-signal-to-noise models,” Mathematical Modelling of Systems, vol.3, no.1, pp.102-35, Jan. 1997

Grigoriadis, K.M. and R.E. Skelton, “Minimum-energy covariance Controllers,” Automatica, vol. 33, no.4, pp.569-78, April 1997.

Lu, J. and R.E. Skelton, “Optimal Hybrid Control for Structures,” to appear in Microcomputers in Civil Engineering, 1997.

Lu, J. and Skelton, R., “Covariance Control Using Closed-Loop Modeling for Structures,” Earthquake Engineering and Struc. Dynamics, November 1997, Vol. 26.

Geromel, J., de Souza, C., and Skelton, R., “State Output Feedback Controllers: Stability & Convexity,” IEE Transactions of Automatic Control, Vol. 43, # 1, January 1998, pp. 120-125.

Lu, J. and Sleton, R., “Robust Variance Control for Systems with Finite-Signal-to-Noise Uncertainty,” Automatica, May 1998.

Harmand, J. and R.E. Skelton, “Optimal Economical Design
using FSN Models: Continuous Plants,” in progress.

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** Books Published**:

Skelton, R., and D.H. Owens (Editors), “Model Error Concepts and Compensation,” Pergamon Press, 1986.

Skelton, R. “Dynamic Systems Control,” John Wiley and Sons, New York, 1988.

Skelton, R. E., T. Iwasaki, and K.l Grigoriadis, “A Unified Algebraic Approach to Control Design,” (300 pages), Taylor and Francis, London, ISBN 07484 0592 5, 1996.

Williamson, D. and R. Skelton, “Linear Algebra in Dynamic
Systems,” (600 pages).

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** Book Chapters**:

Skelton, R.E. and P.W. Likins, “Techniques of Modeling and Model Error Compensation in Linear Regulator Problems,” Advances in Control and Dynamic Systems, Chapter 1, Vol XIV, C.T. Leondes (editor), Academic Press, pp. 1-101, 1978.

Skelton, R.E., “Control Design for Flexible Spacecraft,” Chapter 2, Theory and Application of Optimal Control in Aerospace Systems, AGARDograph No. 251, AGARD, NATO, 7 rue Ancelle 92200, Neuilly Sur Seine, France, P. Kant (editor), pp. (8-1)-(8-28), 1981.

Skelton, R.E. and A. Yousuff, “Component Cost Analysis of Large Scale Dynamic Systems,” Advances in Control and Dynamic Systems, Chapter 1, Vol. XVIII, C.T. Leondes (editor), 1 Academic Press, New York, pp. 1-53, 1982.

Yousuff, A. and R.E. Skelton, “Covariance Equivalent Realizations with Application to Model Reduction of Large Scale Systems,” Control and Dynamic Systems, Vol. 22, C.T. Leondes (editor), Academic Press, New York, 1985, pp. 273-348, 1985.

Skelton, R.E. and B.D.O. Anderson, “Q-Markov Covariance Equivalent Realizations, Modelling and Application of Stochastic Processes,” U.B. Desai (editor), Kluwer Academic Publishers, 1986. Chapter 1 of Model Error Concepts and Compensation, R.E. Skelton and D.H. Owens (editors), Pergamon Press, New York, 3 pages, 1986.

Skelton, R.E., “On the Structure of Modeling Errors and the Inseparability of the Modeling and Control Problems,” Chapter 4 of Model Error Concepts and Compensation, Pergamon Press, pp. 13-21, 1986.

Skelton, R.E., “Covariance Approximation and Control,” Modelling, Identification and Robust Control, C.I. Byrnes and A. Lindquist (editors), North Holland, pp. 363-380, 1986.

Hotz, A. and R.E. Skelton, “A Covariance Control Theory,” Control and Dynamic Systems, Vol. 26, C.T. Leondes (editor), Academic Press, New York, 1987.

Skelton, R.E. and E.G. Collins, “A Set of Q-Markov COVERs of Discrete Systems,” chapter in Applied Modelling and Simulation of Technological Systems, P. Borne (editor), North Holland Publishing Co., 1987.

Hu, A., R.E. Skelton and T.Y. Yang, “Modal Cost Analysis for Simple Continua,” chapter in Large 20Space Structures, Dynamics and Control, S.N. Atluri (editor), Springer-Verlag, 1988.

Skelton, R.E., “Model Reduction and Design of Low Order Controllers,” chapter in AIAA Progress in Aeronautics and Astronautics Series: Mechanics and Control of Large Space Structures, 1990.

Skelton, R.E., “Structural Modeling for Control,” chapter in Flight Vehicle Materials, Structures and Dynamics Technologies, A.K. Noor and S.L. Venneri (editors), 1990.

Skelton, R., J. Kim and Dong Da, “Component Model Reduction in Canonical Correlation Coordinates,” Advances in Control and Dynamic Systems, Vol. 35, C.T. Leondes (editor), Academic Press, 1990.

Skelton, R., R. Singh and J. Ramakrishan, “Component Model Reduction by Component Cost Analysis,” Mechanics and Control of Large Space Structures, AIAA Progress in Astronautics Series, New York, 1990.

Zhu, G. G. and R. E. Skelton, “A Two-Riccati, Feasible Algorithm for Guaranteeing Output L? Constraints,” Control and Dynamic Systems, Vol. 74, Academic Press, Inc., 1996.

Skelton, R. E., G. G. Zhu and K. M. Grigoriadis, “Optimal
Finite Wordlength Digital Control with Skewed Sampling,” Control and Dynamic
Systems, Vol. 78, Academic Press, Inc., 1996.

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** Monographs**:

Skelton, R.E., “Optimal Momentum Management in Momentum Exchange Control Systems for Orbiting Vehicles,” published by University of Alabama Huntsville, 1969, 80 pages (MS thesis).

Skelton, R.E., “Accommodating Model Error in Linear Systems Control,” Chapter 3 of A Study of Attitude Control Concepts for Precision-Point Nonrigid Spacecraft, NASA CR-2619, Oct. 1975 (edited by P.W. Likins), pp. 114-144.

Skelton, R.E. “Control by Model Error Estimation,” Contract Report UCLA-eng-6730, Mar. 1976. Prepared for Marshall Space Flight Center under contract NASA 28358 (Ph.D. Dissertation, 221 pages).

Likins, P.W. and R.E. Skelton, “Dynamics and Control of Flexible Spacecraft,” text for short course, AIAA Professional Study Series, two (different) volumes, Vol. 1 (153 pages) published June 1977, Vol. 2 (170 pages) published June 1978.

Skelton, R.E., A. Yousuff and M. Dornseif, “Case Studies of Model Reduction of Flexible Structures by Modal Cost Analysis,” Contract Report for Control Dynamics Co., Feb. 1983.

Hotz, A.F., E. Collins, and R.E. Skelton, “Linearized Dynamical Model for the NASA/IEEE SCOLE Configuration,” NASA Contractor Report 172394, Grant NAG1-468, Sept. 1984.

Collins, E.G., Jr., A.F. Hotz and R.E. Skelton, “Nonlinear
Dynamical Model for the NASA/SCOLE Configuration,” NASA Contract Report under
Grant NAG-1-468, 1984.

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** Conference Papers**:

Johnson, C.D. and R.E. Skelton, “Optimal Desaturation of Momentum Exchange Control Systems,” Proceedings 11th Joint Automatic Control Conference, Atlanta, Georgia, Paper 26-D, pp. 683-694, June 1970.

Skelton, R.E., “A Control Policy for Systems with Momentum Exchange Controllers,” presented at the 22nd International Astronautical Federation Congress, Brussels, Belgium, 1971.

Skelton, R.E., “Disturbance Absorbing Controllers,” AAS Symposium on the Dynamics and Control of Nonrigid Spacecraft, UCLA, Los Angeles, CA, Aug. 1974.

Skelton, R.E. and P.W. Likins, “On the Use of Model Error Systems in the Control of Large Scale Linearized Systems,” Proceedings, International Federation of Automatic Control Symposium on Large Scale Systems, Theory and Applications, Udine, Italy, June 1976.

Skelton, R.E., “On the Minimal Controller Problem,” Proceedings, AIAA, AAS Symposium on Dynamics and Control of Large Flexible Spacecraft, Blacksburg, VA, pp. 119-128, June 1977.

Skelton, R.E. and P.W. Likins, “An Approach to Model Error Compensation in the Control of Nonrigid Spacecraft,” Proceedings International Federation of Automatic Control, Multivariable Technological Systems Symposium, Fredericton, N.B., Canada, July 1977.

Skelton, R.E., “Model Truncation Using Controllability Observability Measures,” Proceedings of the International Union of Theoretical and Applied Mechanics (IUTAM) Symposium on Dynamics of Multibody Systems, Munich, Aug. 1977, Springer-Verlag, pp. 331-345, 1978.

Skelton, R.E., “Some Limitations of Model Reduction and Controller Design Methods for Large Uncertain Dynamical Systems,” Paper No. 78-103, American Astronautical Society Annual Rocky Mountain Guidance and Control Conference, Keystone, CO, Mar. 1978.

Skelton, R.E., “Cost-Sensitive Model Reduction for Control Design,” Paper No. 78-1282, pp. 288-296, AIAA Guidance and Control Conference, Palo Alto, CA, Aug. 1978.

Skelton, R.E., “An Adaptive Version of the Continuous-Time Orthogonal Filter for Model Error Compensation,” Proceedings, 15th Meeting Society of Engineering Science, Gainesville, FL, Dec. 1978.

Hughes, P.C. and R.E. Skelton, “Controllability and Observability for Flexible Spacecraft,” Proceedings, Dynamics and Control of Large Flexible Spacecraft 2nd VPI and AIAA Symposiums, pp. 385-409, 1979.

Skelton, R.E. and P.C. Hughes, “Flexible Space Structure Model Reduction by Modal Cost Analysis,” Proceedings, Dynamics and Control of Large Flexible Spacecraft, 2nd VPI and AIAA Symposium, pp. 641-661, 1979.

Skelton, R.E. and C.Z. Gregory, “Measurement Feedback and Mode Reduction by Modal Cost Analysis,” 1979 Joint Automatic Control Conference, Denver, CO, pp. 211-218, 1979.

Hughes, P.C. and R.E. Skelton, “Stability, Controllability, and Observability of Linear Matrix-Second-Order Systems,” Joint Automatic Control Conference, Denver, CO, 1979, pp. 56-62, 1979.

Skelton, R.E., “Adaptive Orthogonal Filters for Compensation of Truncated Modes and Other Modal Data Uncertainty in Spacecraft,” Paper No. 79-0197, AIAA 17th Aerospace Science Meeting, New Orleans, LA, Jan. 1979.

Skelton, R.E. and P.C. Hughes, “Control of Large Space Structures: Some Problems and Approaches,” AIAA/NASA Conference on Advanced Technology for Future Space Systems, Hampton, VA, May 8-11, 1979.

Skelton, R.E. and P.C. Hughes, “Control of Large Space Structures: Some problems and approaches,” Paper No. 0952, pp. 540-541 (abstract of paper presented), AIAA/NASA Conference on Advanced Technology for Future Space Systems, Hampton, VA, May 1979.

Hughes, P.C. and R.E. Skelton, “Modal Truncation for Flexible Spacecraft,” Proceedings, AIAA Guidance and Control Conference, Boulder, CO, pp. 1-8, July 1979.

Skelton, R.E., “Modal Cost Analysis in Model and Controller Reductions,” Proceedings, 17th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, pp. 421-434, Oct. 1979.

Skelton, R.E., “Large Space System Control Technology,” NASA LSST Symposium, NASA Langley Research Center, Nov. 1979.

Skelton, R.E., “Dynamic Controller Design Using Modal Cost Analysis,” IEEE Control and Decision Conference, Fort Lauderdale, FL, Dec. 1979.

Skelton, R.E., “Partial Realizations of Linear Time-Varying Systems,” Allerton Conference on Computing and Control, Monticello, IL, Oct. 1980.

Yedavalli, R.K. and R.E. Skelton, “Controller Design for Parameter Sensitivity Reduction in Linear Regulators,” Allerton Conference on Computing and Control, Monticello, IL, Oct. 1980.

Skelton, R.E. and R.K. Yedavalli, “A Unified Approach to Parameter Sensitivity Reduction in Linear Regulators,” 14th Asilomar Conference, Pacific Grove, CA, Nov. 17-19, 1980.

Skelton, R.E. and R.K. Yedavalli, “Modal Cost Analysis of Flexible Space Structures with Uncertain Modal Data,” IEEE Control and Decision Conference, Albuquerque, NM, Dec. 1980.

Skelton, R.E., “Component Cost Analysis of Linear Systems with Application to Model Reduction,” IEEE Control and Decision Conference, Albuquerque, NM, Dec. 1980.

Skelton, R.E., “A Control Design Algorithm for Flexible Structures,” IEEE Control and Decision Conference, Albuquerque, NM, Dec. 1980.

Hablani, H.B. and R.E. Skelton, “Generic Model of a Large Space Structure for Control Concept Evaluation,” Proceedings, 19th AIAA Aerospace Sciences Meeting, St. Louis, MO, Jan. 12-15, 1981.

Skelton, R.E., “Stability vs. Performance of Large Scale Systems,” Control and Identification of Distributed Parameter Systems, Institute for Computer Application in Science and Engineering, Hampton, VA, Apr. 6-9, 1981.

Skelton, R.E., “Component Cost Analysis of Linear Systems,” Proceedings, 1981 IEEE International Symposium on Circuits and Systems Chicago, IL, Apr. 27, 1981.

Alfriend, K.T., R.E. Skelton and A. Ziffer, “Model Order Reduction for Maneuvering Satellites,” 3rd VPI/AIAA Symposium on Dynamics and Control of Large Flexible Spacecraft, Blacksburg, VA, June 1981.

Skelton, R.E., “Cost-Equivalent Realizations of Linear Systems,” 10th International Federation for Information Processing, Conference on System Modeling and Optimization, New York, NY, Aug. 31-Sept. 4, 1981.

Skelton, R.E., “Optimal Selection of Inputs and Outputs in Linear Stochastic Systems,” 15th Asilomar Conference on Circuits, Systems and Computers, Pacific Grove, CA, Nov. 9-11, 1981.

Skelton, R.E., “Linear Quadratic Gaussian Methods for the Control of Large Space Structures,” IEEE Electronics and Aerospace Systems Conference, Washington, D.C., Nov. 16-19, 1981.

Skelton, R.E. and Di Chiu, “Selecting Measurements and Controls in LQG Problems,” IEEE Control and Decision Conference, San Diego, CA, Dec. 1981.

Skelton, R.E. and Di Chiu, “Measurement and Control Selection in Large Scale LQG Problems,” Symposium on Engineering Science and Mechanics, National Cheng Kung University/American Astronautical Society, Dec. 28-31, 1981.

Skelton, R.E., “On the Selection of Controller Order for the Control of Linear Dynamic Systems,” IFAC Symposium, McMaster University, Hamilton, Canada, 1982.

Skelton, R.E., “Algorithm Development for the Control Design of Flexible Structures,” Air Force/NASA Workshop on Modeling, Analysis and Optimization Issues for Large Space Structures, Williamsburg, VA, May 13-14, 1982.

Skelton, R.E., “On the Selection of Controller Order for the Control of Linear Dynamic Systems,” 6th IFAC Symposium on Identification and System Parameter Estimation, Washington, D.C., June 7-11, 1982.

Yousuff, A. and Skelton, R.E., “Cost-Equivalent Realizations of Stochastic Processes,” ACC, Arlington, VA, June 14-16, 1982.

Skelton, R.E., “On the Selection of Optimal Bandwidths for LSS Controllers,” ACC, Arlington, VA, June 14-16, 1982.

Yousuff, A. and Skelton, R.E., “A Solar Optical Telescope Controller Design by Component Cost Analysis,” 3rd IFAC Symposium on Control of Distributed Parameter Systems, Toulouse, France, June 29-July 2, 1982.

Skelton, R.E., “The Effects of Model Error in the Control of Flexible Structures,” NASA Workshop on Applications of Distributed Systems Theory to the Control of Large Space Structures, July 14-16, 1982.

Skelton, R.E., “Analysis of Structural Perturbations in Systems via Cost Decomposition Methods,” IFAC Workshop on Singular Perturbations and Robustness of Control Systems, Ohrid, Yugoslavia, July 13-16, 1982.

Skelton, R.E., K.T. Alfriend, R.E. Lindberg and S. Fisher, “Component Cost Analysis for Maneuvering Satellites,” AIAA Paper 82-1464, AIAA/AAS Astrodynamics Conference, San Diego, CA, Aug. 1982.

Skelton, R. E. and A. Yousuff, “Computer-Aided Design of Sub optimal LQG Controllers,” International Federation of Automatic Control Conference on Computer-Aided Design, Purdue University, West Lafayette, IN, Sept. 1982.

Yousuff, A. and R.E. Skelton, “Balanced Controller Reduction,” Allerton Conference on Control and Computing, Monticello, IL, Oct. 1982.

Skelton, R.E. and M.L. DeLorenzo, “On the Selection of Q and R in the LQG Problem,” Allerton Conference on Control and Computing, Monticello, IL, Oct. 1982.

Skelton, R.E. and Wagie, D.A., “Minimal Root Sensitivity in Linear Systems,” IFAC Workshop on Applications of Nonlinear Programming and Optimal Control, San Francisco, CA, June 20-22, 1983.

Skelton, R.E., Frazho, A.E. and Wagie, D.A., “Generalization of Cost-Equivalent Realizations,” IEEE ISCAS, Newport Beach, CA, May 2-4, 1983.

Hanks, B.R. and R.E. Skelton, “Designing Structures for Reduced Response Using Modern Control Theory,” AIAA/ASME/ASCE/AHS, 24th Structural Dynamics and Materials Conference, Stateline, NV, May 1983.

Skelton, R.E. and M.L. DeLorenzo, “Weight Selection for Variance Constrained LQG Regulators, with Application to the Hoop-Column Antenna,” AIAA/VPI 4th Symposium on Dynamics and Control of Large Structures, Blacksburg, VA, June 1983.

Yousuff, A. and R.E. Skelton, “A Projection Approach to Controller Reduction,” IEEE Control and Decisions Conference, San Antonio, TX, Dec. 1983.

Yousuff, A., D.A. Wagie and R.E. Skelton, “A Projection Approach for Model Reduction by Matching Output Covariances and Markov Parameters,” IEEE Control and Decision Conference, San Antonio, TX, Dec. 1983. Berry, D.T., T.Y.

Yang and R.E. Skelton, “Dynamics and Control of Lattice Beams Using Complex and Simplified Finite Element Models,” AIAA Dynamics Specialist Conference, Palm Springs, CA, May 1984.

Skelton, R.E., “The Need for Super Computers Dedicated to Simulation and Control Design of Large Space Structures,” NSF Workshop, Study of Supercomputers in Mechanical Systems Research, Lawrence Livermore Lab, Livermore, CA, June 22, 1984.

Skelton, R.E., “Model Error Structure and the Inseparability of the Modeling and Control Problem,” Plenary Address and Paper, NASA/JPL Workshop on Identification and Control of Large Space Structures, San Diego, June 1984, JPL Publication 85-29, Vol. III, Apr. 1985, pp. 414-421.

DeLorenzo, M.L. and R.E. Skelton, “Sensor/Actuator Selection for the Constrained Variance Control Problem,” NASA/JPL Workshop on Identification and Control of Flexible Space Structures, San Diego, CA, June 1984.

Wagie, D.A. and R.E. Skelton, “Model Reduction and Controller Synthesis in the Presence of Parameter Uncertainty,” ACC, San Diego, CA, June 1984.

Yousuff, A. and R.E. Skelton, “Controller Reduction by Covariance Equivalent Realizations,” ACC, San Diego, CA, June 1984.

Skelton, R.E. and A. Hu, “Modeling and Control of Large Flexible Structures,” 1st European Workshop on Real Time Control of Large Scale Systems, Patras University, Greece, July 1984.

Skelton, R.E. and A. Hu, “On the Selection of Finite Element Models for Control Design,” Guidance and Control Conference, Seattle, WA, Aug. 21, 1984.

Skelton, R.E. and A. Hu, “Modeling Structures for Control Design,” Symposium on Advances and Trends in Structures and Dynamics, Arlington, VA, Oct. 22-25, 1984.

Wagie, D.A. and R.E. Skelton, “Covariance Equivalent Realizations of Discrete Systems,” IEEE CDC, Las Vegas, NV, 1984.

Skelton, R.E., “On the Structure of Modeling Errors and the Inseparability of the Modeling and Control Problems,” IFAC Workshop on Model Error Concepts and Compensation, Boston, MA, June 1985.

Hu, A., R.E. Skelton and T.Y. Yang, “On the Selection of Finite Element Models for Control Design,” ACC, Boston, MA, June 1985.

Skelton, R.E., “Covariance Approximation and Control,” Mathematical Theory of Networks and Systems, Stockholm, Sweden, June 10-15, 1985.

Skelton, R.E., “Covariance Control of Flexible Structures,” IEEE CDC, Fort Lauderdale, FL, Dec. 1985.

Collins, E.G. and R.E. Skelton, “Covariance Control of Discrete Systems,” IEEE CDC, Fort Lauderdale, FL, Dec. 1985.

Hotz, A. and R.E. Skelton, “A Covariance Control Theory,” IEEE CDC, Fort Lauderdale, FL, Dec. 1985.

Skelton, R.E., “Model Error Estimation and the Orthogonal Filter,” Automatic Control Conference, Seattle, WA, 1986.

Collins, E.G., Jr. and R.E. Skelton, “Constrained Variance Design Using State Covariance Assignment,” Automatic Control Conference, Seattle, WA, pp. 51-56, 1986.

Hotz, A.F. and R.E. Skelton, “Controller Design for Robust Stability and Performance,” Automatic Control Conference, Seattle, WA, pp. 1813-1817, 1986.

Skelton, R.E., “A Set of Q-Markov Covariance Equivalent Models of Discrete Systems,” IMACS Symposium on Modeling and Simulation for Control of Lumped and Distributed Parameter Systems, Villeneuve D’Ascq Cedex, France, June 1986.

Skelton, R.E., E. Collins and G. Norris, “Sensor Actuator Locations for the Spacecraft Control Laboratory Experiment,” 3rd Annual Spacecraft Control Laboratory Experiment Workshop, Hampton, VA, Nov. 1986.

King, Andrew M. and R.E. Skelton, “Model Reduction for Discrete Bilinear Systems,” NASA/JPL Telerobotics Workshop, Jan. 1987.

Skelton, R.E., “Multiobjective Control and the Selection of Sensors/Actuators in Robotics,” IEEE International Symposium on Intelligent Control, Philadelphia, PA, Jan. 1987.

Desai, U.B. and R.E. Skelton, “Partially Nested Q-Markov Covariance Equivalent Realizations,” MTNS, Phoenix, AZ, June 1987.

Hu, A. and R.E. Skelton, “Convergence Properties of Modal Costs for Certain Distributed Parameter Systems,” ASME 11th Biennial Conference on Mechanical Vibration and Noise, Boston, MA, Sept. 1987.

Hu, A., R.E. Skelton and T.Y. Yang, “Modeling and Control of Beam-Like Structures,” 20th Midwestern Mechanics Conference, Purdue University, West Lafayette, IN, Sept. 1987.

Skelton, R.E., “Model Reduction in Linear Systems,” SDIO/NASA Workshop on Multibody Simulation, Arcadia, CA, Sept. 1987.

Skelton, R.E., “Influence of Structural Modeling on Control Design,” 2nd NASA/DOD CSI Technology Conference, Colorado Springs, CO, Nov. 17-19, 1987.

Skelton, R.E., “Influence of Structural Modeling on Control Design,” 2nd NASA/DOD Control/Structure Interaction Technology Conference, Colorado Springs, CO, Nov. 17-19, 1987.

Anderson, B.D.O. and R.E. Skelton, “The Generation of All Q-Markov COVERS,” IFAC World Congress, Munich, Germany, Vol. 11, pp. 99-104, 1987.

Norris, G.A. and R.E. Skelton, “Sensor and Actuator Selection for Optimal Closed Loop Performance in the Presence of Correlated Noise,” ACC, Minneapolis, MN, pp. 1337-1341, 1987.

King, A.M., U.B. Desai and R.E. Skelton, “A Generalized Approach to Q-Markov Covariance Equivalent Realizations for Discrete Systems,” ACC, Minneapolis, MN, pp. 1521-1526, 1987.

Collins, E.G., R.E. Skelton and T.L. Morin, “Efficiency and Optimality in Constrained Variance Control,” IEEE CDC, Los Angeles, CA, pp. 792-794, 1987.

de Villemagne, C. and R.E. Skelton, “Model Reduction Using a Projection Formulation,” IEEE CDC, Los Angeles, CA, pp. 461-466, 1987.

de Villemagne, C. and R.E. Skelton, “Controller Reduction Using Canonical Interactions,” IEEE CDC, Los Angeles, CA, pp. 107-111, 1987.

King, A.M., R.E. Skelton and U.B. Desai, “Approximation of State-Affine=20Discrete-Time Systems Using Q-Volterra Covariance Equivalent Realizations,” ACC, Atlanta, GA, 1988.

Williamson, D. and R.E. Skelton, “Optimal Q-Markov COVER for Finite Precision Implementation,” ACC, Atlanta, GA, 1988.

Norris, G.A. and R.E. Skelton, “Placing Dynamic Sensors and Actuators on Flexible Space Structures,” International Union of Theoretical and Applied Mechanics Symposium on Dynamics of Controlled Mechanical Systems, Zurich, Switzerland, June 1988.

Skelton, R.E., R. Singh, and J. Ramakrishnan, “Component Model Reduction by Component Cost Analysis,” AIAA Guidance and Control Conference, Minneapolis, MN, Aug. 1988.

Skelton, R.E. and C. Hsieh, “Covariance Controllers for Dynamic Systems,” AIAA Guidance and Control Conference, Minneapolis, MN, Aug. 1988.

Yedavalli, R.K. and R.E. Skelton, “Robust Covariance Control for Linear Uncertain Systems,” 109th ASME Winter Annual Meeting, Chicago, IL, Nov. 1988.

Skelton, R.E., “Component Model Reduction for N-Body Problems,” 109th ASME Winter Annual Meeting, Chicago, IL, Nov. 1988.

Skelton, R.E., “Covariance Controllers for Dynamic Systems,” IEEE CDC, Austin, TX, Dec.1988.

Skelton, R.E., “Experiments in Dynamics and Controls,” NASA in Space Experiments Workshop, Atlanta, GA, Dec. 1988.

Skelton, R.E., “Selection of Sensors, Actuators for Flexible Structures,” Aktive Schwingungsdampfung, Mathematisches Forschungsinstitut, Oberwolfach, Germany, 1988.

Skelton, R.E. and Dong Da, “Model Reduction in the N-Body Problem,” 2nd Workshop on Control Mechanics, Los Angeles, CA, Feb. 1989.

Hsieh, C. and R.E. Skelton, “Covariance Controllers for Linear Discrete Time Systems,” ACC, Pittsburgh, PA, June 1989.

Zhu, G. and R.E. Skelton, “Extension of Output Variance Constraints to Hard Constraints,” 3rd Annual Workshop on Aerospace Computational Control, Oxnard, CA, Aug. 1989.

Skelton, R.E. and G. Zhu, “Examples of Robust Covariance Control,” IEEE International Conference on Systems Engineering, Dayton, OH, Aug. 1989.

Skelton, R.E. and Dong Da, “Component Model Reduction in Canonical Correlation Coordinates,” 21st Biennial ASME Conference on Mechanical Vibration and Noise, Montreal, Canada, Sept. 1989.

Skelton, R. and D. Dong, “The Use of Canonical Correlation Analysis in Component Model Reduction,” ASME, 12th Biennial Conference on Mechanical Vibration and Noise, Montreal, Canada, Sept. 1989.

Williamson, D., R. Skelton and G. Zhu, “Moment Matching Model Reduction for Multirate Linear Systems,” 27th Annual Allerton Conference on Communication, Control, and Computing, Monticello, IL, Sept. 1989.

Corless, M., G. Zhu and R. Skelton, “Robustness of Covariance Controllers,” 27th Annual Allerton Conference on Communication, Control, and Computing, Monticello, IL, Sept. 1989.

Skelton, R.E., “Covariance Control of Flexible Structures,” IEEE CDC, Tampa, FL, Dec. 1989.

Skelton, R.E., “The Explicit Relation Between Component Cost Analysis and Balanced Coordinates,” IEEE CDC, Tampa, FL, Dec. 1989.

Skelton, R., “The Explicit Relation Between Component Cost Analysis and Balanced Coordinates,” IEEE CDC, Tampa, FL, Dec. 1989.

Corless, M., G. Zhu and R. Skelton, “New Robustness Properties of Linear Systems,” IEEE CDC, Tampa, FL, Dec. 1989.

Skelton, R. and D. Williamson, “Controllers for Minimizing Sample Time Uncertainty in Digital LQG Regulation,” IEEE CDC, Tampa, FL, Dec. 1989.

Corless, M., G. Zhu and R. Skelton, “Improved Robustness Bounds Using Covariance Matrices,” IEEE CDC, Tampa, FL, Dec. 1989.

Skelton, R.E. and Brantley R. Hanks, “Structure Redesign for Improved Dynamic Response,” ACC, San Diego, CA, May 1990.

Skelton, R.E., “A Deterministic Theory of Optimal Estimation and Control,” IFAC Congress, Tallinn, USSR, July 1990.

Hu, A., R.E. Skelton, Capt. G.A. Norris and Lt. D.F. Cossey, “Selection of Sensors and Actuators with Applications to the ASTREX Facility,” AFOSR/CSI, Nov. 1990.

Skelton, R.E., J. Ramakrishnan, K.W. Byun and Lt. D.F. Cossey, “ASTREX Controller Design: OVC and OCC Approach,” AFOSR/CSI, Nov. 1990.

Yasuda, K. and R.E. Skelton, “Closed Form Solutions to Lyapunov Equations and Application to Covariance Control,” SIAM, Nov. 1990.

Yasuda, K., S. Kherat, R.E. Skelton and E. Yaz, “Covariance Control and Robustness of Bilinear Systems,” IEEE CDC, Honolulu, HI, Dec. 1990.

Liu, Ketao and Robert Skelton, “Q-Markov Covers for Closed-Loop Identification of a Plant,” IEEE CDC, Honolulu, HI, Dec. 1990.

Skelton, R.E., “Synthesis Viewpoint of Robustness Problems,” IEEE CDC, Honolulu, HI, Dec. 1990.

B.R. and R.E. Skelton, ‘Closed-Form Solutions for the Design of Optimal Dynamic Structures Using Linear Quadratic Regulator Theory,” AIAA/ASME/ASCE/AHS/ASC, 32nd Structural Dynamics and Materials Conference, Baltimore, MD, Apr. 1991.

Liu, K., R. Skelton, M. Dendy, V. Jones and A. Patterson, “Experimental Verification of an Integrated Modeling and Control Strategy for Flexible Structures,” NASA’s CSI/GIP, Apr. 1991.

Liu, K., J. Sharkey and R. Skelton, “Q-Markov Cover Identification with Frequency Partition for Modal Analysis of Hubble Telescope Flight Data,” IFAC Workshop in Dynamics and Control of Flexible Structures, Huntsville, AL, Apr. 1991.

Liu, K. and R. Skelton, “Identification and Control of NASA’s ACES Structures,” NASA’s Control Structures Interaction, Guest Investigator Program, June 1991.

Grigoriadis, K., K. Liu and R. Skelton, “Optimizing Linear Controllers for Finite Precision Synthesis Using Additive Quantization Models,” International Symposium on the Mathematical Theory of Networks and Systems (MTNS 91), Kobe, Japan, June 1991.

Liu, K. and R. Skelton, “Optimal Controllers for Finite Wordlength Implementation,” International Symposium on the Mathematical Theory of Networks and Systems (MTNS 91), Kobe, Japan, June 1991.

Skelton, R., “Optimal Finite Precision and Quantization Effects in Control Design,” International Symposium on the Mathematical Theory of Networks and Systems (MTNS 91), Kobe, Japan, June 1991.

Xu, J. and R. Skelton, “Robust Covariance Control,” Workshop on Robust Control, Tokyo, Japan, June 1991.

Smith, M., K. Grigoriadis and R. Skelton, "”he Optimal Mix of Passive and Active Control,” American Control Conference, Boston, MA, June 1991.

Skelton, R., S. Kherat and E. Yaz, “Covariance Control of Discrete Stochastic Bilinear Systems,” American Control Conference, Boston, MA, June 1991.

Zhu, G. and R. Skelton, “Extended Output L? Constraint Problem by Weight Selection in LQ Control,” American Control Conference, Boston, MA, June 1991.

Zhu, G. and R. Skelton, “Robust Properties of Periodic Discrete and Multirate Systems,” American Control Conference, Boston, MA, June 1991.

Liu, K. and R. Skelton, “Identification and Control of NASA’s ACES Structure,” American Control Conference, Boston, MA, June 1991.

Byun, K., R. Skelton, and D. Cossey, “Covariance Control of ASTREX,” AIAA Guidance, Navigation, and Control Conference, New Orleans, LA, Aug. 1991.

Skelton, R. and J. Xu, “The Parameterization of All Output Estimators of Linear Systems Using Covariance Assignment,” AIAA Guidance, Navigation, and Control Conference, New Orleans, LA, Aug. 1991.

Xu, J. and R. Skelton, “Plant Covariance Equivalent Controller Reduction,” AIAA Guidance, Navigation, and Control Conference, New Orleans, LA, Aug. 1991.

Zhu, G. and R. Skelton, “Controller Design to Achieve Covariance Constraints,” First IFAC Symposium on Design Methods of Control Systems, Zurich, Switzerland, Sept. 1991.

Skelton, R., “Robustness from the Covariance Control,” Plenary Lecture, IFAC International Workshop on Robustness of Control Systems, Kappel, Switzerland, Sept. 1991.

Skelton, R. and T. Iwasaki, “Liapunov and Covariance Controllers,” Plenary Lecture, IFAC International Workshop on Robustness of Control Systems, Kappel, Switzerland, Sept. 1991.

Yaz, E. and Skelton R., “On Covariance Assignment for Linear Discrete Time Systems,” 29th Annual Allerton Conference on Communication, Control and Computing, University of Illinois, Urbana, IL, Oct. 1991.

Kim, J. and Skelton, R., “The Optimal Mix of Passive and Active Control and Actuator Selection,” Symposium and Tutorial, Conference on Active Materials and Adaptive Structures, Alexandria, VA, Nov. 1991.

Skelton, R. and J. Kim, “An Extension of The Optimal Mix of Passive and Active Control,” Symposium and Tutorial, Conference on Active Materials and Adaptive Structures, Alexandria, VA, Nov. 1991.

Yaz, E. and R. Skelton, “Continuous and Discrete State Estimation with Error Covariance Assignment,” 30th IEEE Conference on Decision and Control, Brighton, U.K., Dec. 1991.

Xu, J. and R. Skelton, “Plant Covariance Equivalent Controller Reduction for Discrete Systems,” 30th IEEE Conference on Decision and Control, Brighton, U.K., Dec. 1991.

Zhu, G. and R. Skelton, “A Two-Riccati, Feasible Algorithm for Guaranteeing Output L? Constraints,” 30th IEEE Conference on Decision and Control, Brighton, U.K., Dec. 1991.

Liu, K. and R. Skelton, “Model Identification of Large Flexible Structures with Arbitrary Excitation Signals,” 10th International Modal Analysis Conference and Expo, San Diego, CA, Feb. 1992.

Liu, K. and R. Skelton, “Deterministic Q-Markov Cover Identification and Its Error Analysis,” 10th International Modal Analysis Conference and Expo, San Diego, CA, Feb. 1992.

Skelton, R., “Modeling Hubble Space Telescope Flight Data by Q-Markov Cover Identification,” American Control Conference, Chicago, IL, June 1992.

Skelton, R. and T. Iwasaki, “Liapunov and Covariance Controllers,” American Control Conference, Chicago, IL, June 1992.

Iwasaki, T., and R. Skelton, “Quadratic Optimization for Fixed Order Linear Controllers Via Covariance Control,” American Control Conference, Chicago, IL, June 1992.

Skelton, R. and T. Iwasaki, “The Jury Test and Covariance Control,” Symposium on Fundamentals of Discrete Time Systems, Chicago, IL, June 1992.

Xu, J.-H. and R. Skelton, “Covariance Control of the ASTREX Facility,” 1st IEEE Conference on Control Applications, Sept. 1992.

Grigoriadis, K., E. Yaz and R. Skelton, “Robust Stabilization of Interval Plants by State Space Methods,” Proceedings, 13th Allerton Conference on Communication, Control and Computing, Oct. 1992.

Grigoriadis, K. and R. Skelton, “Alternating Convex Projection Methods for Covariance Control Design,” Proceedings, 13th Allerton Conference on Communication, Control and Computing, Oct. 1992.

Iwasaki, T., R. Skelton and M. Corless, “A Computational Algorithm for Covariance Control: Continuous-time Case,” Proceedings, 13th Allerton Conference on Communication, Control and Computing, Oct. 1992.

Zhu, G. and R. Skelton, “Block Diagonal Output Covariance Constraint Problem for Periodic and Multirate Systems,” Proceedings, 13th Allerton Conference on Communication, Control and Computing, Monticello, IL, Oct. 1992.

Zhu, G. and R. Skelton, “Covariance Control for Discrete Periodic Systems,” Proceedings of the 31st IEEE CDC, Tucson, AZ, Dec. 1992.

Iwasaki, T. and R. Skelton, “A Computational Algorithm for Discrete System Covariance Control,” Proceedings of the 31st IEEE CDC, Tucson, AZ, Dec. 1992.

Skelton, R., “The Routh Test and Covariance Control,” Proceedings of the 31st IEEE CDC, Tucson, AZ, Dec. 1992.

Yaz, E., A. Azemi and R. Skelton, “Design of Covariance Controllers and Estimators with Prescribed Pole Locations,” Proceedings of the 31st IEEE CDC, Tucson, AZ, Dec. 1992.

Yaz, E., K. Grigoriadis and R. Skelton, “Discrete-Time H2 - H0 Norm-Bounding Designs Pole Placement Control and Estimation,” Proceedings of the 31st IEEE CDC, Tucson, AZ, Dec. 1992.

Yaz, E., G. Zhu and R. Skelton, “Observer Design for Discrete-Time Systems using Covariance Assignment,” 31st IEEE CDC, Tucson, AZ, Dec. 1992.

Skelton, R., Yi-Bing Lee and G. Zhu, “Covariance Active/Passive Control,” Smart Structures and Materials, Tucson, AZ, Jan. 1993.

Zhu, Guoming, K. Grigoriadis and R.E. Skelton, “Covariance Control Design for the HST,” Proceedings of the 16th Annual AAS Guidance and Control Conference, Keystone, AZ, Feb. 1993.

Iwasaki, T., R.E. Skelton and M.J. Corless, “A Computational Algorithm for Covariance Control: Discrete-Time Case,” Proceedings of the 1993 American Control Conference, San Francisco, California, June 1993.

Iwasaki, T. and R.E. Skelton, “All Low Order H? Controllers with Covariance Upper Bound,” Proceedings of the 1993 American Control Conference, San Francisco, California, June 1993. (Received Best Paper Award.)

Iwasaki, T. and R.E. Skelton, “A Complete Solution to General H? Control Problem: LMI Existence Conditions and State Space Formulas,” Proceedings of the 1993 American Control Conference, San Francisco, California, June 1993.

Grigoriadis, K.M., M.J. Carpenter, G. Zhu and R.E. Skelton, “Optimal Redesign of Linear Systems,” Proceedings of the 1993 American Control Conference, San Francisco, California, June 1993. (Received the Best Paper Award.)

Zhu, G., M.A. Rotea and R.E. Skelton, “A Convergent Feasible Algorithm for the Output Covariance Constraint Problem,” Proceedings of the 1993 American Control Conference, San Francisco, California, June 1993.

Yaz, E., K. Grigoriadis and R. Skelton, “Multiobjective Control Design Via Linear Matrix Equations,” Proceedings of the 1993 IFAC World Congress, Sydney, Australia, July 1993.

Yaz, E. and R.E. Skelton, “Parametrization of All Linear Compensators for Discrete-Time Stochastic Bilinear Systems,” Proceedings of the 1993 IFAC World Congress, Sydney, Australia, July 1993.

Stoustrup, J., R. Skelton and T. Iwasaki, “Mixed H2 / H? State Feedback Control with an Improved Covariance Bound,” Proceedings of the 1993 IFAC World Congress, Sydney, Australia, July 1993.

Williamson, D., R. Skelton and K. Grigoriadis, “Finite Wordlength Control of Sampled Data Systems by Covariance Assignment,” Proceedings of the 1993 IFAC World Congress, Sydney, Australia, July 1993.

Grigoriadis, K.M. and R.E. Skelton, “Low-Order Control Design for LMI Problems Using Alternating Projection Methods,” Proceedings of the 1993 Allerton Conference on Communication, Control and Computing, Urbana, IL, Sept.-Oct. 1993.

Zhu, G. and R.E. Skelton, “L2to L? Gain for Sampled-Data Systems,” Proceedings of the 1993 Allerton Conference on Communication, Control and Computing, Urbana, IL, Sept. 1993.

Grigoriadis, K., R.E. Skelton and A.E. Frazho, “Alternating Convex Projection Methods for Discrete-Time Covariance Control Design,” Proceedings of the 32nd IEEE CDC, San Antonio, TX, Dec. 1993.

Grigoriadis, K. and R.E. Skelton, “Minimum Energy Covariance Controllers,” Proceedings of the 32nd IEEE CDC, San Antonio, TX, Dec. 1993.

Iwasaki, T. and R.E. Skelton, “On the Observer Based Structure of Covariance Controllers,” Proceedings of the 32nd IEEE CDC, San Antonio, TX, Dec. 1993.

Yaz, E., R.E. Skelton and K. Grigoriadis, “Robust Regional Pole Assignment with Output Feedback,” Proceedings of the 32nd IEEE CDC, San Antonio, TX, Dec. 1993.

Carpenter, M. and R.E. Skelton, “Smart Dynamic System Design: An Integrated Approach,” Proceedings of the 1994 North American Conference on Smart Structures and Materials, Orlando, FL, Feb. 1994.

Grigoriadis, K.M. and R.E. Skelton, “Integrated Design for Intelligent Structures,” Proceedings of the Second International Conference on Intelligent Materials Blacksburg, VA, June 1994.

Zhu, G., R.E. Skelton and Pingkang Li, “Q-Markov Cover Identification Using Pseudo Random Binary Signals,” Proceedings of the 1994 American Control Conference, Baltimore, MD, June 1994.

Iwasaki, T. and R.E. Skelton, “A Unified Approach to Fixed-Order Controller Design via Linear Matrix Inequalities,” Proceedings of the 1994 American Control Conference, Baltimore, MD, June 1994.

Zhu, G., K.M. Grigoriadis and R.E. Skelton, “Optimal Finite Wordlength Digital Control with Skewed Sampling,” Proceedings of the 1994 American Control Conference, Baltimore, MD, June 1994.

Skelton, R.E., “Increased Roles of Linear Algebra in Control Education,” Proceedings of the 1994 American Control Conference, Baltimore, MD, June 1994.

Grigoriadis, K. M. and R. E. Skelton, “Improved Q-Markov Cover Identification Using Alternating Projections” Proceedings of the 1994 American Control Conference, Baltimore MD, June 1994.

Geromel, J., C.C. de Souza and R.E. Skelton, “LMI Numerical Solution for Output Feedback Stabilization,” Proceedings of the 1994 American Control Conference, Baltimore, MD, June 1994.

Skelton, R. E., K. M. Grigoriadis and G. Zhu, “An Algorithm for Iterative Identification and Control Design Using an Improved Q-Markov Cover,” 10th IFAC Symposium on System Identification, Copenhagen, Denmark, July 1994.

Zhu, G. G. and R. E. Skelton, “Output Covariance Constraint Problem with Disturbance Feedback,” First World Conference on Structural Control, Pasadena, CA, Aug. 1994.

Skelton, R. E., “Robust Control of Aerospace Systems,” International Federation on Automatic Control (IFAC), Rio de Janeiro, Brazil, Sept. 1994.

Shi, G. and R. E. Skelton, “The Data-Based LQG Control Problem,” Proceedings of the 1994 Conference on Decision and Control, Lake Buena Vista, FL, Dec. 14-16, 1994.

Grigoriadis, K. M. and R. E. Skelton, “Fixed-Order Control Design for LMI Control Design Problem Using Alternating Projection Methods,” Proceedings of the 1994 Conference on Decision and Control, Lake Buena Vista, FL, Dec. 14-16, 1994.

Zhu, G. and R. E. Skelton, “Peak Stress Control in the Presence of Uncertain Dynamic Loads,” 10th VPI&SU, Blacksburg VA, May 8-10, 1995.

Skelton, R. E., “Integrated Structure and Controller Design,” Proceedings of the 1995 Automatic Controls Conference, Seattle WA, June 20-23, 1995.

Skelton, R. E., “Some Open Problems in Structural Control,” Proceedings of the 1995 Automatic Controls Conference, Seattle WA, June 20-23, 1995.

Skelton, R. E. and G. Shi, “Finite Signal-to-Noise Models: Covariance Control by State Feedback,” Proceedings of the Third European Control Conference, Rome, Italy, Sept. 5-8, 1995.

Skelton, R. E., G. Shi and G. Zhu, “On the Identifiability of Structural Systems,” Proceedings of The American Society of Engineers Conference, Boston MA, Sept. 17-21, 1995.

Shi, G. and R. Skelton, “State Feedback Covariance Control for Linear Finite Signal-To-Noise Ratio Models,” Proceedings of the 34th Conference on Decision and Control, New Orleans LA, Dec. 13-15, 1995.

Thygesen, U. and R. E. Skelton, “Linear Systems with Finite Signal-to-Noise Ratios: A Robustness Approach,” Proceedings of the 34th Conference on Decision and Control, New Orleans LA, Dec. 13-15, 20, 1995.

Skelton, R.E. and J. Lu, “Weighted closed-loop identification and control of civil structures,” Industrial and Commercial Applications of Smart Structures Technologies, San Diego, CA, USA, 27-29 Feb. 1996.

Harmand, J., R. E. Skelton and J. P. Steyer, “Disturbance Accommodation Control of a Nitrification Process with Structural Uncertainties,” CESA’96 IMACS Multiconference, Lille FRANCE, July 9-12, 1996.

Skelton, R. E. and J. Lu. “Mixed Passive/Active Control with H2/H? Performance in Structural Systems,” 3rd International Conference on Motion and Vibration Control, Chiba JAPAN, Sept. 1-6, 1996.

Shi, Guojun, R.E. Skelton, and K.M. Grigoriadis, “An algorithm to integrate passive and active control,” IEEE Joint Conference on Control Applications Intelligent Control and Computer Aided Control System Design, Dearborn, MI, USA, 15-18 Sept. 1996

Shi, G. and R.E. Skelton, “An algorithm for integrated structure and control design with variance bounds,” 35th IEEE Conference on Decision and Control, Kobe, Japan, 11-13 Dec. 1996.

Lu, Jianbo and Skelton, R.E., and U.H. Thygesen, “Robust control with variance finite-signal-to-noise models,” 35th IEEE Conference on Decision and Control, Kobe, Japan, 11-13 Dec. 1996.

Grigorindis, K.M., J. Lu, and R.E. Skelton, “ L2 and L2-L? model reduction via linear matrix inequalities,” 35th IEEE Conference on Decision and Control, Kobe, Japan, 11-13 Dec. 1996.

Skelton, R.E. and M. He, “Smart tensegrity structure for NESTOR,” SPIE 4th Annual Symposium on Smart Structures and Materials, San Diego, CA, March 97.

Robert E. Skelton and Cornel Sultan, “Controllable Tensegrity, a New Class of Smart Structures” Proc. of SPIE 4th Symposium on Smart Structures and Materials 2-6 March 1997, San Diego, USA

Skelton, R.E. and Jianbo Lu, “Performance-oriented optimization of structures with mixed passive and active control,” Mathematics and Control in Smart Structures, San Diego, CA, USA, 3-6 March 1997.

Skelton, R.E. and C. Sultan, “Controllable tensegrity: a new class of smart structures,” Smart Structures and Materials 1997: Mathematics and Control in Smart Structures, San Diego, CA, USA, 3-6 March 1997.

Sultan, C. and Skelton, R., “Integrated Design of Controllable Tensegrity Structures,” Proc. ASME, International Congress and Exposition, 54, pp. 27-37, 1997.

Sultan, C. and Skelton, R., “Controllable Tensegrity: A New Class of Smart Structures,” Mathematics and Control of Smart Structures, Editors: V.V. Varadan and J. Chandra, Proc. SPIE 4th Symposium on Smart Structures and Materials, 3039, pp. 166-177, 1997.

Cornel Sultan and Robert E. Skelton, “Integrated Design of Controllable Tensegrity Structures,” Proc. of ASME Intl. Congress and Exposition 20-26 Nov. 1997, Dallas, USA.

Sultan, C. and Skelton, R., “Force and Torque Smart Tensegrity Sensor,” Mathematics and Control of Smart Structures, Editors: V.V. Varadan and J. Chandra, Proc. SPIE 5th Symposium on Smart Structures and Materials, 1998.

Sultan, C. and Skelton, R., “Tendon Control Deployment of Tensegrity Structures Using Equilibrium Surfaces,” Mathematics and Control of Smart Structures, Editors: V.V. Varadan and J. Chandra, Proc. SPIE 5th Symposium on Smart Structures and Materials, 1998.

Sultan, C. and Skelton, R., “Static Analysis and Dynamics for 2-Stage Tensegrity Modules.” To be submitted.

Sultan, C. and Skelton, R., “Nonlinear Dynamics for 2-Stage Tensegrity Modules.” To be submitted.

Sultan, C. and Skelton, R., “Linear Parametric Models for 2-Stage Tensegrity Modules.” To be submitted.

Murakami, H., Y. Nishimura, T.J. Impelluso, and R.E. Skelton, “A Virtual reality-based CAD system for tensegrity structures,'” Proceedings of the 12th ASCE Engineering Mechanics Conference, in press, 1998.

Sultan, C., and Skelton, R. E., “Peak to Peak Control of an Adaptive Tensegrity Space Telescope,” presented at SPIE 6th Intl. Symposium on Smart Structures and Materials 1-5 March 1998, Newport Beach, USA.

Sultan, C. and Skelton, R. E., “Force and Torque Smart Tensegrity Sensor,” Proc. of SPIE 5th Intl. Symposium on Smart Structures and Materials 1-5 March 1998, San Diego, USA.

Sultan, C. and Skelton, R. E., “Tendon Control Deployment of Tensegrity Structures,” Proc. of SPIE 5th Intl. Symposium on Smart Structures and Materials 1-5 March 1998, San Diego, USA.

Sultan, C., Corless, M. and Skelton, R. E., “Nonlinear Robust Tracking Control of a Tensegrity Motion Simulator,” Proc. of SPIE 12th Intl. Conference on Sensing, Simulation and Control, AeroSense 98, 13-17 April 1998, Orlando, USA.

Skelton, R., “An Introduction to Controllable Tensegrity Structures,” 12th ASCE Engineering Mechanics Conf., La Jolla, CA, May 17-20, 1998.

Adhikari, R., Skelton, R. and Helton, W., “Mechanics of Tensegrity Beams,” Draft of a paper version of the report to be submitted to a journal.

Adhikari, R., and Skelton, R., “An Introduction to Smart Tensegrity Structures,” Engineering Mechanics for the 21st Century, ASCE Conference, La Jolla, California, May 17-20, 1998.

Williamson, A. and Skelton, R., “A General Class of Tensegrity Systems: Geometric Definition,” Engineering Mechanics for the 21st Century, ASCE Conference, La Jolla, California, May 17-20, 1998.

Williamson, A. and Skelton, R., “A General Class of Tensegrity Systems: Equilibrium Analysis,” Engineering Mechanics for the 21st Century, ASCE Conference, La Jolla, California, May 17-20, 1998.

Skelton, R. “A New Paradigm for Structural Control,” ACC Plenary Speech. To be given in June 1999.

Sultan, C., Corless, M., and Skelton, R.E., “Reduced
Prestressable Conditions for Tensegrity Structures”, to be presented at AIAA/ASME/ASCE/AHS/ASC
40th Structures, Structural Dynamics and Materials Conference 12-15 April 1999,
St. Louis, USA.

====================================================================

** Technical Reports in Unrefereed Publications**:

Skelton, R.E., “Gaseous Blowdown as an S-IVB Retro System,” Lockheed Missiles and Space Company, Huntsville, AL, LMSC A033117, TM-54/01-28, Oct. 28, 1963.

Skelton, R.E., “Coordinate Transformations for an Attitude Motion Simulator,” Lockheed Missiles and Space Company, Huntsville, AL, LMSC A711010, TM-54/60-1, Aug. 20, 1965.

Skelton, R.E., “Control Concepts for Project THERMO,” Sperry Rand Corporation, Huntsville, AL, 517-66-13, Dec. 21, 1966.

Skelton, R.E., “Experiment Pointing Control Studies for ATM,” Sperry Rand Corporation, Huntsville, AL, SP-522-0003, Oct. 20, 1967.

Skelton, R.E., “Rigid Two-Body Math Models for ATM,” Sperry Rand Corporation, Huntsville, AL, SP-522-0048, Apr. 26, 1968.

Skelton, R.E. and Kimery, R., “An ATM Experiment Pointing Control System Design Without Rate Gyros,” Sperry Rand Corporation, Huntsville, AL, SP-213-0121, Sept. 9, 1968.

Skelton, R.E., “Optimal Momentum Management in Momentum Exchange Controls Systems for Orbiting Vehicles,” Sperry Rand Corporation, Huntsville, AL, SP-231-0176, Feb. 4, 1969.

Skelton, R.E., “On the Optimal Control of Control Moment Gyro Systems,” Sperry Rand Corporation, Huntsville, AL, SP-230-0269, Sept. 8, 1970.

Skelton, R.E., “A Method of Determining SKYLAB Vehicle Attitudes to Minimize Momentum Accumulation in the Presence of Uncertain Venting Disturbances,” Sperry Rand Corporation, Huntsville, AL, SP-230-0415, Oct. 5, 1970.

Skelton, R.E., “Controllability of HEAO Scan Mode,” Sperry Rand Corporation, Huntsville, AL, SP-230-0512, Nov. 10, 1970.

Skelton, R.E., “On the Control of Spinning Vehicles with CMG’s and the Estimation of Principal Axis Locations,” Sperry Rand Corporation, Huntsville, AL, SP-250-0603, Jan. 31, 1972.

Skelton, R.E., “A Line of Sight Roll Mode for the SKYLAB Experiment Pointing Control System,” Sperry Rand Corporation, Huntsville, AL, SP-225-0503, June 24, 1971.

Skelton, R.E., “Linearized Mathematical Models of the Aerodynamic and Gravity Gradient Torques Acting on Orbiting Vehicles,” Sperry Rand Corporation, Huntsville, AL, SP-250-0534, Aug. 25, 1971.

Skelton, R.E. and Hendley, A.C., “A Three CMG Optimal Control Study for Space Station,” Sperry Rand Corporation, Huntsville, AL, SP-250-6200-0015, Aug. 31, 1971.

Hendley, A.C. and Skelton, R.E., “A Four CMG Optimal Controller for Space Station,” Sperry Rand Corporation, Huntsville, AL, SP-250-0547, Sept. 30, 1971.

Willyard, C. and Skelton, R.E., “Space Shuttle Main Engine Mathematical Model and a Throttlable Rocket Engine Optimal Controller Design Philosophy,” Sperry Rand Corporation, Huntsville, AL, SP-250-0557, Oct. 28, 1971.

Muench, D. and Skelton, R.E., “Spinning Attitude Control Simulation with Application to High Energy Astronomy Observatory,” Sperry Rand Corporation, Huntsville, AL, SP-252-0712, Aug. 25, 1972.

Skelton, R.E., Templeton, J., and Bapna, B., “A Simulation Program for the Near-Optimal Control of Partially Controllable Linear Systems,” Vol. I, Vol. II, Vol. III, Sperry Rand Corporation, Huntsville, AL, SP-252-0718, Aug. 31, 1972.

Skelton, R.E., “Controllability of Momentum Exchange Controllers,” Sperry Rand Corporation, Huntsville, AL, SP-250-0720, Aug. 31, 1972.

Singh, R. and Skelton, R.E., “Large Scale Telescope Attitude Control Study Part I: Momentum Exchange Controller,” Sperry Rand Corporation, Huntsville, AL, SP-250-0746, Feb. 1, 1973.

Skelton, R.E., “Precise Pointing Control of Space Vehicles with Momentum Exchange Controllers,” Sperry Rand Corporation, Huntsville, AL, SP-250-754, Feb. 21, 1973.

Skelton, R.E., “Evaluation of Sorel (Solar Orbiting Relativity Satellite) Control System,” Sperry Rand Corporation, Huntsville, AL, SP-250-800, Sept. 4, 1973.

Adhikari, R., R. Skelton, and W. Helton, “Mechanics of
Tensegrity Structures,” Report 1998-01, UCSD Structural Systems and Control Lab,
Feb., 1998.

====================================================================

I** nvited Seminars, Colloquia**:

“Accommodating Modal Uncertainty in the Control of Spacecraft,” UCLA Mechanics and Structures Department, June 1976.

“Model Reduction for Flexible Spacecraft by Modal Cost Analysis,” University of Toronto, Institute of Aerospace Studies, Dec. 17, 1979.

“Model and Controller Reduction in Large Scale Systems Using Component Cost Analysis,” Renssalaer Polytechnic Institute, Electrical Engineering Department Jan. 24, 1980.

“Model Reduction,” Stanford University, Department of Aeronautics and Astronautics, Nov. 12, 1980.

“Component Cost Analysis of Linear Systems,” Michigan State University, Feb. 26, 1981.

“Control Design of Flexible Spacecraft,” University of Michigan, Nov. 12, 1981.

“Model Reduction and Controller Design,” NASA Langley Large Space Systems Technology Workshop June, 1979.

“Control of Flexible Vehicles,” University of Stuttgart, MECHANIC SEMINAR, Stuttgart, Germany, June 1, 1982.

“Towards a Unification of the Modeling and Control Problems,” Lawrence Livermore Lab, University California, Sept. 28, 1984.

"Dynamics and Control of Flexible Structures," Stevens Institute of Technology, Hoboken, NJ, Nov. 5, 1984.

“Modeling and Control Strategies for Flexible Space Structures,” Massachusetts Institute of Technology, Department of Aerospace Engineering, Nov. 6, 1984.

“Modeling and Control of Flexible Spacecraft,” NASA Langley Research Center, Nov. 30, 1984.

“Introduction to Covariance Control,” The Australian National University, Canberra, May 7, 1985.

“A Perspective on Controller Reduction,” The Australian National University, Canberra, Jan. 31 and Feb. 7, 1985.

“Model Reduction to Preserve Covariances,” The Australian National University, Canberra, Mar. 18, 1985.

“Covariance Equivalent Realizations for Discrete-Time Systems,” The Australian National University, Canberra, Mar. 4, 1985.

“On the Structure of Modeling Errors,” The Australian National University, Canberra, Mar. 26, 1985.

“Dynamics and Control of Flexible Structures,” University of Washington, Seattle, July 2, 1985.

“Covariance Equivalent Model Reduction,” University of Newcastle, Newcastle, Australia, Feb. 14, 1985.

“Recent Developments in Model Reduction,” University of Strathclyde, Glasgow, Scotland, June 5, 1985.

“Covariance Approximation and Control,” University of Illinois, EE Department, Oct. 7, 1985.

“An Introduction to Covariance Control Theory,” University of Michigan, Ann Arbor, MI, Oct. 15, 1985.

“Model Reduction of Linear Systems,” University of Toledo, Toledo, Ohio, Oct. 14, 1985.

“Multi-objective Control of Large Space Structures,” Kobe University, Koe, Japan, Mar. 13, 1986.

“Sensor/Actuator Selection in Large Space Structures,” Kyoto University, Kyoto, Japan, Mar. 15, 1986.

“Covariance Control of Large Space Structures,” Nagoya University, Nagoya, Japan, Mar. 18, 1986.

“Dynamics and Control of Flexible Structures,” National Aerospace Laboratory, Mar. 19, 1986.

“Modeling and Control of Flexible Spacecraft,” University of Osaka Prefecture, Osaka, Japan, Mar. 24, 1986.

"Model Reduction and the Q-Markov Cover Method," Osaka University, Osaka, Japan, Mar. 28, 1986.

"Model Reductions by Projections: Preserving 4 Properties of a Higher Order System," Australian National University, Canberra, Aug. 6, 1987.

"Controller Reduction Combining Canonical Correlation Analysis and Q-Markov COVERS," Australian National University, Canberra, Aug. 11, 1987.

"Linear Discrete-Time Systems: Realizations from Input-Output Data," Australian National University, Canberra, Aug. 13, 1987.

"A Generalized Approach to Q-Markov COVERS for Discrete Systems," Australian National University, Canberra, Aug. 20, 1987.

"Covariance Control of Flexible Structures," UC Irvine, Irvine, CA, Jan. 30, 1989.

"Control of Flexible Structures," Georgia Institute of Technology, Atlanta, GA, Feb. 16, 1987.

"Model Reductions Using a Projection Formulation," University of Michigan, Ann Arbor, MI, Apr. 12, 1988.

"Dynamics and Control of Flexible Structures," Arizona State University, Tempe, AZ, Nov. 3, 1987.

"Structural Perturbations of Dynamic Systems Via Cost-Decomposition Methods," Illinois Institute of Technology, Chicago, IL, Feb. 4, 1982.

"Q-Cover Concepts in Control System Design," Aerospace Corporation, Los Angeles, CA, Jan. 9, 1985. "On the Control of Flexible Structures," University of Illinois, Urbana, IL, Apr. 28, 1986.

"Dynamics and Control of Flexible Structures," University of California at Irvine, Jan. 30, 1989.

"Covariance Controllers for Flexible Structures," Ohio State University, May 5, 1989.

"Multiobjective and Covariance Control," Johns Hopkins University, Oct. 19, 1989.

"Journey in Space," 25th Anniversary Lecture Series, Nov. 1, 1989, Indiana University-Purdue University at Fort Wayne.

"Liapunov and Covariance Controllers," Oct. 7-Nov. 1, 1991, Springer Professor Lectures, University of California-Berkeley.

"Covariance Control" DLR, 1992, Oberpfaffenhofen, Germany.

"Integrated Modeling and Control for Flexible Structures," DLR, 1992, Oberpfaffenhofen, Germany.

"Covariance Control and the Routh Test," EE Department, Zurich, Switzerland, 1992.

"Integrated Modeling and Control for Flexible Structures," ME Department, Zurich, Switzerland, 1992.

"Covariance Control," University Copenhagen, Denmark, 1992.

====================================================================

** Humboldt Award (Germany) seminars presented**:

"Advanced Control Techniques for Flexible Spacecraft," "The
Optimal Mix of Active and Passive Control,"

"Linear Lyapunov and Covariance Controllers," "Covariance
Control," "The Optimal Mix of Passive and Active Control of Vector Second Order
Systems," and "Integrated Modeling and Control for Flexible Structures." "An
Introduction to Covariance Control" and "A Finite Step Algorithm for Covariance
Control," Eindhoven University, Netherlands.

"Linear Controllers with Output Feedback (LMI Approaches)," Nov. 23, 1993, Universidade Estadual de Campinas, Brazil.

"Low-Order Control Design for LMI Problems Using Alternating Projection Methods," Nov. 26, 1993, Universidade Estadual de Campinas, Brazil. "An Integrated Approach to Combine Plant and Controller Design," Feb. 11, 1994, University of Michigan.

"Robust Control of Aerospace Systems," Sept. 16, 1994, Plenary Lecture, International Federation on Automatic Control (IFAC), Brazil.

"Integrated Plant and Controller Design," Sept. 21, 1994, Plenary Lecture, 10th Congress Brasileiro de Automatica; and the 6th Congresso Latino Americano de Controle Automatic, Rio de Janeiro, Brazil.

"Equivalent Models and Equivalent Control Problems," Oct. 19, 1995, Invited Lecture, University of Notre Dame, Notre Dame IN. "Robust Control for Electro-Mechanical Systems" April 4, 1996, Invited Lecture, University of California, San Diego, CA.

"Robust Control for Electro-Mechanical Systems" April 24,
1996, Invited Lecture, University of Illinois, Champaigne-Urbana, IL.

====================================================================

** Invited Short Courses**:

Skelton, R.E., "Rotational Dynamics I," two week short course for Sperry Rand Corp., Huntsville, AL, Apr. 1970.

Skelton, R.E., "Rotational Dynamics II," two week short course for Sperry Rand Corp., Huntsville, AL, May 1970.

Skelton, R.E., "Modern Control Theory and Applications," two week short course for Sperry Rand Corp., Huntsville, AL, Apr. 1972.

Skelton, R.E., "Dynamic Programming," two week short course for Sperry Rand Corp., Huntsville, AL, May 1973.

Skelton, R.E., "Linear System Theory," two week short course for Sperry Rand Corp., Huntsville, AL, June 1973.

Skelton, R.E., and P.W. Likins, "Dynamics and Control of Flexible Spacecraft," two day short course sponsored by AIAA, Los Angeles, Sept. 30-Oct. 1, 1978.

Skelton, R.E., and P.W. Likins, "Dynamics and Control of Flexible Spacecraft," two day short course sponsored by AIAA, Provincetown, Massachusetts, June 28-29, 1979.

Skelton, R.E., and P.W. Likins, "Dynamics and Control of Flexible Spacecraft," five day UCLA short course, July 28-Aug. 1, 1980.

Skelton, R.E., "Dynamics and Control of Flexible Spacecraft," two day short course sponsored by US Air Force, Wright Patterson Air Force Base, July 10-11, 1980.

Skelton, R.E., and P.C. Hughes, "Dynamics and Control of Flexible Structures," three day short course for McDonnell Douglas Aerospace Co., St. Louis, MO, July 9-11, 1981.

Skelton, R.E., and P.C. Hughes, "Dynamics and Control of Flexible Structures," four day short course for Eastman Kodak Co., Rochester, NY, June 8-11, 1981.

Skelton, R.E., P.C. Hughes, and H.T.Y. Yang, "Dynamics and Control of Flexible Structures," five day UCLA short course, July 20-24, 1981.

Skelton, R.E., "Beneficial Interactions of the Dynamics Guidance and Control Disciplines," Lecture series (6 hours) for the American Astronautical Society Annual Rocky Mountain Guidance and Control Conference, Jan. 30, 1982.

Skelton, R.E., and P.C. Hughes, "Dynamics and Control of Flexible Structures," five day UCLA short course, Los Angeles, CA, Aug. 22-26, 1983.

Skelton, R.E., "Dynamics and Control of Flexible Space Structures," Five day short course, Honeywell, Inc., Clearwater, FL, Dec. 3-7, 1984.

Goodwin, G., R.E. Skelton, and D.L. Mingori, "Control Theory for Modern Mechanical and Aerospace Applications," UCLA, Jan. 7-11, 1985.

Skelton, R.E., "Control of Flexible Structures," Carl-Cranz Gesellschaft e.V., Flugplatz, Wessling-Oberpfaffenhofen, Germany, June 9-11, 1986.

Skelton, R.E., "Dynamics and Control of Flexible Structures," Lawrence Livermore National Laboratory, Livermore, CA, July 13-18, 1986.

Skelton, R.E., "Control Structure Interaction," Sandia National Labs, Jan. 26-30, 1987.

Skelton, R.E., "Dynamics and Control of Flexible Structures," Edwards Air Force Base, June 22-26, 1987.

Skelton, R.E., "Optimal Estimation and Control," JPL.
Skelton, R.E., "Flexible Structure Control," European Space Agency, Apr., 1992,
2 day short course.