Discrete-time sliding mode control based on improved disturbance compensation reaching law

被引：0
|
作者：
Zheng C.-M. [1 ]
Zhang J.-S. [1 ]
Chen R. [1 ]
机构：
[1] College of Information and Control Engineering, China University of Petroleum(East China), Qingdao
来源：
Kongzhi yu Juece/Control and Decision | 2019年 / 34卷 / 04期
关键词：
Chattering-free; Discrete-time system; Disturbance compensation; Quasi-sliding-mode; Reaching law;
D O I：
10.13195/j.kzyjc.2017.1213
中图分类号：
学科分类号：
摘要：
Considering the uncertain discrete-time system satisfying matched conditions, an improved disturbance compensation reaching law based sliding mode control algorithm is presented, and the dynamic features of the quasi-sliding mode are analyzed. To decrease the bandwidth of the quasi-sliding mode domain, the changing rate of the disturbance is redefined as the second-order disturbance difference. In addition, the satuation function is introduced, and by setting proper thickness of the boundary layer, the bandwidth of the quasi-sliding mode domain can achieve the magnitude of the order O(T3) without steady-state chattering, which improves the control precision of the system. Simulation results verify the effectiveness of the presented algorithm. © 2019, Editorial Office of Control and Decision. All right reserved.
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收藏
页码：880 / 884
页数：4
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