This paper develops a new approach for the output model reference adaptive control of linear continuous-time plants with state delays. The main idea is to include into the control law a feedforward component that compensates for the delayed states, in addition to output feedback. The feedforward is formed by special adaptively adjusted prefilters as a function of the delayed state of the reference model. The output feedback component is designed as for a plant without delay, but applied to the time-delay plant. Such a controller structure containing adaptive output feedback and adaptive prefilters from the delayed reference model makes it possible to solve the problem of adaptive exact asymptotic output tracking under parametric uncertainties. The stability is analyzed using the Lyapunov-Krasovskii functional method. A simulated example illustrates the new controller.
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e-mail: bmirkin@tx.technion.ac.il
e-mail: peo@tx.technion.ac.il
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June 2003
Technical Briefs
Output-Feedback Model Reference Adaptive Control for Continuous State Delay Systems
Boris M. Mirkin,
e-mail: bmirkin@tx.technion.ac.il
Boris M. Mirkin
Faculty of Civil and Environmental Engineering, The Lowdermilk Division of Agricultural Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
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Per-Olof Gutman
e-mail: peo@tx.technion.ac.il
Per-Olof Gutman
Faculty of Civil and Environmental Engineering, The Lowdermilk Division of Agricultural Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
Search for other works by this author on:
Boris M. Mirkin
Faculty of Civil and Environmental Engineering, The Lowdermilk Division of Agricultural Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
e-mail: bmirkin@tx.technion.ac.il
Per-Olof Gutman
Faculty of Civil and Environmental Engineering, The Lowdermilk Division of Agricultural Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
e-mail: peo@tx.technion.ac.il
Contributed by the Dynamic Systems and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the ASME Dynamic Systems and Control Division, May 2002; final revision, January 2003. Associate Editor. N. Olgac.
J. Dyn. Sys., Meas., Control. Jun 2003, 125(2): 257-261 (5 pages)
Published Online: June 4, 2003
Article history
Received:
May 1, 2002
Revised:
January 1, 2003
Online:
June 4, 2003
Citation
Mirkin, B. M., and Gutman , P. (June 4, 2003). "Output-Feedback Model Reference Adaptive Control for Continuous State Delay Systems ." ASME. J. Dyn. Sys., Meas., Control. June 2003; 125(2): 257–261. https://doi.org/10.1115/1.1570856
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