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Switching LPV control designs using multiple parameter-dependent Lyapunov functions
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DOI：10.1016/j.automatica.2004.06.011.png)
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Abstract
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In this paper we study the switching control of linear parameter-varying (LPV) systems using multiple parameter-dependent Lyapunov functions to improve performance and enhance control design flexibility. A family of LPV controllers is designed, each suitable for a specific parameter subregion. They are switched so that the closed-loop system remains stable and its performance is optimized. Two switching logics, hysteresis switching and switching with average dwell time, are examined. The control synthesis conditions for both switching logics are formulated as matrix optimization problems, which are generally non-convex but can be convexified under some simplifying assumptions. The hysteresis switching LPV control scheme is then applied to an active magnetic bearing problem. (C) 2004 Elsevier Ltd. All rights reserved.
Keywords:
switched linear parameter-varying system
multiple parameter-dependent Lyapunov functions
switching logics
linear matrix inequality
non-convexity
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