A two-phase power attracting law based discrete-time control

被引：0
|
作者：
Chen, Qiang [1 ]
Ye, Yan [1 ]
Hu, Yi [1 ]
Sun, Ming-Xuan [1 ]
机构：
[1] College of Information Engineering, Zhejiang University of Technology, Hangzhou,310023, China
来源：
Kongzhi yu Juece/Control and Decision | 2022年 / 37卷 / 02期
关键词：
State estimation - Discrete time control systems - Errors;
D O I：
10.13195/j.kzyjc.2020.1228
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a novel two-phase power attracting law based control scheme is proposed for a class of uncertain discrete-time systems. In the design of the attracting law, the convergence process of the tracking error is divided into two different stages, such that the amplitude of each convergence step and the error convergence speed can be both improved. An extend state observer is constructed to effectively compensate for system disturbances, and a discrete-time controller with two-phase power is presented to improve the system robustness and reduce the steady-state error. In addition, the steady-state error band, the attractive layer and the maximum step size of the tracking error converging into the steady-state error band are respectively derived to characterize both the steady-state and transient performance. Finally, simulation results show effectiveness of the proposed scheme. Copyright ©2022 Control and Decision.
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页码：424 / 430
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