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Dynamics of discrete-time sliding mode control under uncertain systems with a disturbance compensator

Qu, Shaocheng and Xia, Xiaohua and Zhang, Jiangfeng Jeff (2014) Dynamics of discrete-time sliding mode control under uncertain systems with a disturbance compensator. IEEE Transactions on Industrial Electronics, 61 (7). pp. 3502-3510. ISSN 0278-0046

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Abstract

In this paper, dynamical behaviors of the discrete-time sliding-mode-control (DSMC) uncertain systems are studied. First, a discrete reaching law with a disturbance compensator is presented, and a sliding-mode controller is designed by using the proposed reaching law. Second, the time steps for the system trajectories to converge to the switching manifold are found. Then, a quasi-sliding-mode domain (QSMD) of the DSMC uncertain systems is obtained, and the system dynamics of the DSMC systems in QSMD are described. Finally, numerical simulations are given to demonstrate the effectiveness of the proposed strategies.