Adaptive stabilization of impulsive switched linear time-delay systems
A piecewise dynamic gain approach
Shuai Yuan (Harbin Institute of Technology)
Lixian Zhang (Harbin Institute of Technology)
Simone Baldi (Southeast University, TU Delft - Mechanical Engineering)
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Abstract
In the presence of discontinuous time-varying delays, neither Krasovskii nor Razumikhin techniques can be successfully applied to adaptive stabilization of uncertain switched time-delay systems. This paper develops a new adaptive control scheme for switched time-delay systems that can handle impulsive behavior in both states and time-varying delays. At the core of the proposed scheme is a Lyapunov function with a dynamically time-varying coefficient, which allows the Lyapunov function to be non-increasing at the switching instants. The control scheme, guaranteeing global uniformly ultimate boundedness of the closed-loop system, substantially enlarges the class of uncertain switched systems for which the adaptive stabilization problem can be solved. A two-tank system is used to illustrate the effectiveness of the method.
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