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Stability, {l}_{2} -Gain and Asynchronous {H}_{{\infty }} Control of Discrete-Time Switched Systems With Average Dwell Time

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2 Author(s)
Lixian Zhang ; Space Control & Inertial Technol. Res. Center, Harbin Inst. of Technol., Harbin, China ; Peng Shi

This paper first investigates the stability and l 2-gain problems for a class of discrete-time switched systems with average dwell time (ADT) switching by allowing the Lyapunov-like functions to increase during the running time of subsystems. The obtained results then facilitate the studies on the issue of asynchronous control, where "asynchronous" means the switching of the controllers has a lag to the switching of system modes. In light of the proposed Lyapunov-like functions, the desired mode-dependent controllers can be designed since the unmatched controllers are allowed to perform in the interval of asynchronous switching before the matched ones are applied. The problem of asynchronous H infin control for the underlying systems in linear cases is then formulated. The conditions of the existence of admissible asynchronous H infin controllers are derived, and a numerical example is provided to show the potential of the developed results.

Published in:

IEEE Transactions on Automatic Control  (Volume:54 ,  Issue: 9 )