Nonsingular terminal sliding mode control with disturbance observer for uncertain nonlinear systems

被引：0
|
作者：
Yuan, Lei [1 ]
Xiao, Fei [1 ]
Shen, Jian-Qing [1 ]
Chen, Ming-Liang [1 ]
Shi, Qiao-Ming [2 ]
机构：
[1] National Key Laboratory of Vessel Integrated Power System Technology, Naval University of Engineering
[2] College of Electrical Engineering, Xi'an Jiaotong University
来源：
Yuan, L. (lei.yuan.v@gmail.com) | 1600年 / Northeast University卷 / 29期
关键词：
Chattering; Disturbance observer; Singular problem; Terminal sliding mode;
D O I：
10.13195/j.kzyjc.2012.1346
中图分类号：
学科分类号：
摘要：
A nonsingular terminal sliding mode(NTSM) control scheme with the disturbance observer is presented for second order uncertain SISO nonlinear systems. An improved NTSM function is proposed to improve the convergence rate of reaching the sliding surface, and it is proved that the reaching time of the proposed method is smaller than the traditional NTSM. To estimate the chattering phenomenon caused by disturbance influence variable in the system, a linear disturbance observer is employed to reduce the switching term gain of sliding mode control, and a Sigmoid function is used to replace the traditional sign function. Simulation results show the effectiveness and correctness of these conclusions.
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页码：353 / 357
页数：4
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