基于扰动观测器的非线性切换系统有限时间跟踪控制  

Finite time tracking control for nonlinear switching systems based on disturbance observer

作　　者：朱政宇 王琭军 于建江 裔扬[1] ZHU Zhengyu;WANG Lujun;YU Jianjiang;YI Yang(School of Information Engineering,Yangzhou University,Yangzhou 225127,China;School of Information Engineering,Yancheng Normal University,Yancheng 224007,China)

机构地区：[1]扬州大学信息工程学院,江苏扬州225127 [2]盐城师范学院信息工程学院,江苏盐城224007

出　　处：《扬州大学学报（自然科学版）》2021年第2期56-60,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(61973266)。

摘　　要：针对一类带有未知扰动的非线性切换系统,基于扰动观测器设计和有限时间鲁棒控制理论,研究抗干扰动态跟踪控制问题.首先,基于平均驻留时间(average dwell time,ADT)构造该系统所对应的切换信号,同时结合状态反馈信息和干扰估计信息设计一种PI型抗干扰复合控制器;其次,基于Lyapunov分析方法证明闭环系统的鲁棒性及有限时间的稳定性;最后,通过仿真算例验证了该算法的可行性.For a class of nonlinear switching systems with unknown disturbances,based on disturbance observer design and finite-time robust control theory,the problem of anti-jamming dynamic tracking control is studied.Firstly,the corresponding switching signal of the system is constructed based on the average dwell time(ADT).Combining with the state feedback information and interference estimation information,a PI type anti-interference composite controller is designed.Secondly,the robustness and finite time stability of the closed-loop system are proven based on the Lyapunov analysis method.Finally,the feasibility of the algorithm is verified by a simulation example.

关 键 词：切换系统 干扰观测器 平均驻留时间 有限时间稳定 PI跟踪控制 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]