Finite-time output feedback control of uncertain switched systems via sliding mode design

Haijuan Zhao, Yugang Niu and Jun Song

International Journal of Systems Science, 2018, vol. 49, issue 5, 984-996

Abstract: The problem of sliding mode control (SMC) is investigated for a class of uncertain switched systems subject to unmeasurable state and assigned finite (possible short) time constraint. A key issue is how to ensure the finite-time boundedness (FTB) of system state during reaching phase and sliding motion phase. To this end, a state observer is constructed to estimate the unmeasured states. And then, a state estimate-based SMC law is designed such that the state trajectories can be driven onto the specified integral sliding surface during the assigned finite time interval. By means of partitioning strategy, the corresponding FTB over reaching phase and sliding motion phase are guaranteed and the sufficient conditions are derived via average dwell time technique. Finally, an illustrative example is given to illustrate the proposed method.

Date: 2018
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DOI: 10.1080/00207721.2018.1435838

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