标题：A Novel Dead Zone Reaching Law of Discrete-Time Sliding Mode Control With Disturbance Compensation
作者：Ma, Haifeng; Li, Yangmin
作者机构：[Ma, Haifeng] Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean Mech Manufacture, Jinan 250061, Peoples R China.; [Ma, Haifeng; Li, Yang 更多
通讯作者地址：Li, YM (corresponding author), Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hong Kong, Peoples R China.
来源：IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
关键词：Discrete-time sliding mode control (DSMC); dead zone function; reaching; law
摘要：In this paper, a novel dead zone sliding mode reaching law with disturbance compensation is developed for uncertain discrete-time systems. The reaching law is established based on the dead zone function and a high-order disturbance compensator, which estimates and compensates the disturbance by the high-order difference function. The exponential function, which is constructed based on the switching function, is employed to regulate the control gains. Different from existing similar works, the presented new reaching law has the ability to obtain a quasi-sliding mode (QSM) with an adjustable order boundary layer. Hence, much smaller ultimate magnitude of the QSM domain (QSMD) can be guaranteed and the chattering can be further mitigated. Moreover, system dynamics in and out the decrement band and the QSMD is theoretically analyzed. Numerical simulations are employed to demonstrate the superiority of the developed new method.