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Robust finite-time H∞ control for a class of uncertain switched neutral systems

2011; Elsevier BV; Volume: 17; Issue: 4 Linguagem: Inglês

10.1016/j.cnsns.2011.09.022

1878-7274

Zhengrong Xiang, Yanan Sun, Magdi S. Mahmoud,

Advanced Control Systems Design

This paper investigates the robust finite-time H∞ control problem for a class of uncertain switched neutral systems with unknown time-varying disturbance. The uncertainties under consideration are norm bounded. By using the average dwell time approach, a sufficient condition for finite-time boundedness of switched neutral systems is derived. Then, finite-time H∞ performance analysis for switched neutral systems is developed, and a robust finite-time H∞ state feedback controller is proposed to guarantee that the closed-loop system is finite-time bounded with H∞ disturbance attenuation level γ. All the results are given in terms of linear matrix inequalities (LMIs). Finally, two numerical examples are provided to show the effectiveness of the proposed method.