Abstract
We study the stability given by a modified model reference adaptive controller. Modifications are projections of the adapted parameters into a convex compact set and normalization of the signals entering the adaptation law by a weighted l 2-norm of the I/O signals. The plant is assumed to satisfy properties which are proved to be robust with respect to a graph topology based on μ-exponential stability. Global stability is established and the mean square tracking error is shown to converge to zero linearly with the unmodeled effects.
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References
B. Egardt, Stability Analysis of Adaptive Controllers, Lecture Notes in Control and Information Sciences, No. 20, Springer-Verlag, New York, 1979.
B.A. Francis, “Robustness of the Stability of Feedback Systems,” IEEE Transactions on Automatic Control, August 1980.
M. Vidyasagar, “The Graph Metric for Unstable Plants and Robustness Estimates for Feedback Stability,” IEEE Transactions on Automatic Control, May 1984.
P.J. Gawthrop, and K.W. Lim, “Robustness of Self-tuning Controllers,” Proceedings of the IEE, vol. 129, p. 21 – 29, 1982.
L. Praly, “Robustness of Model Reference Adaptive Control,” Proceedings of the Third Yale Workshop on Applications of Adaptive Systems Theory, June 1983.
R. Cristi, “A Globally Stable Adaptive Algorithm for Discrete Time Systems with Fast Unmodeled Dynamics,” Tech. Report, Dept. of Elec. Engg., University of Michigan, Dearborn, Sept. 1983.
R. Ortega, L. Praly, I.D. Landau, “Robustness of Discrete-Time Adaptive Controllers,” IEEE Transactions on Automatic Control, vol. 30, pp. 1179 – 1187, Dec. 1985.
L. Praly, “Robust Model Reference Adaptive Controllers, Part I: Stability Analysis,” Proceedings of the IEEE CDC, Dec. 1984.
B.B. Peterson and K.S. Narendra, “Bounded Error Adaptive Control,” IEEE Transactions on Automatic Control, Dec. 1982.
G. Kreisselmeier and K.S. Narendra, “Stable Model Reference Adaptive Control in the Presence of Bounded Disturbances,” IEEE Transactions on Automatic Control, Dec. 1982.
K.S. Narendra and A.M. Annaswamy, “Robust Adaptive Control in The Presence of Bounded Disturbances,” To appear in the IEEE Transactions on Automatic Control.
R.L. Kosut, B. Friedlander, “Robust Adaptive Control: Conditions for Global Stability,” IEEE Transactions on Automatic Control, July 1985.
P.A. Ioannou and P.V. Kokotovic, Adaptive Systems with Reduced Models, Lecture Notes in Control and Information Sciences, Springer-Verlag, New York, 1983.
P.A. Ioannou and K. Tsakalis, “A Robust Model Reference Adaptive Controller,” Tech. Report, Dept. of Elec. Engg., University of Southern California, May 1985.
L. Praly, “Robustness of Indirect Adaptive Control based on Pole Placement Design,” submitted for publication in Automatica; see also IFAC workshop on adaptive systems in control and signal processing, June 1983.
C.A.Desoer and M. Vidyasagar, Feedback Systems: Input-Output Properties, Academic Press, 1975.
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© 1986 Springer Science+Business Media New York
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Praly, L. (1986). Global Stability of a Direct Adaptive Control Scheme With Respect to a Graph Topology. In: Narendra, K.S. (eds) Adaptive and Learning Systems. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-1895-9_4
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DOI: https://doi.org/10.1007/978-1-4757-1895-9_4
Publisher Name: Springer, Boston, MA
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