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Robust Control for a Class of Time-delay Nonlinear Systems via Output Feedback Strategy

Kang Wu, Zhen-Guo Liu, and Chang-Yin Sun*
International Journal of Control, Automation, and Systems, vol. 16, no. 3, pp.1091-1102, 2018

Abstract : "This paper studies the robust control problem for time-delay systems with complicated inherent nonlinearities and unknown disturbances. Based on the modified homogeneous domination method and by constructing the proper Lyapunov-Krasovskii (L-K) functional, output feedback controllers are successfully constructed to guarantee the boundedness of all the states of the closed-loop system. The convergence of the states is also realizable when the L2 norm of the disturbance exists. The presented method is also extended to solve the control problem of nonholonomic time-delay system. Simulation examples are given to show the effectiveness of the proposed theory."

Keyword : Disturbance, Lyapunov-Krasovskii functional, nonlinear time-delay system, output feedback

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