基于扰动观测器的非线性不确定系统滑模H2保性能控制  

Sliding H2 Guaranteed Cost Control for Nonlinear Uncertain Systems Based on Disturbance Observer

作　　者：刘树博[1] 刘国权 罗先喜[1] 周焕银[1] 邱仁高 廖振海 LIU Shu-bo;LIU Guo-quan;LUO Xian-xi;ZHOU Huan-yin;QIU Ren-gao;LIAO Zhen-hai(Jiangxi Province Engineering Research Center of New Energy Technology and Equipment, East China University of Technology, Nanchang 330013, China)

机构地区：[1]东华理工大学江西省新能源工艺及装备工程技术研究中心

出　　处：《科学技术与工程》2019年第14期230-234,共5页Science Technology and Engineering

基　　金：江西省教育厅科技计划(GJJ170484);国家自然科学基金(51409047,61463003);江西省新能源工艺及装备工程技术中心开放基金(JXNE2016-13)资助

摘　　要：针对一类受到外界扰动的非线性不确定系统,基于扰动观测器提出一种滑模保性能H2控制策略。首先,根据所提出的复合滑模面,设计包含扰动估计的滑模控制策略;其次,依据H∞和极点配置理论,设计鲁棒扰动观测器,来实现对扰动的估计;最后,给出了控制参数的选取原则,以实现H2保性能控制。仿真结果表明,该算法不仅能够有效抑制抖振,而且摆脱了对系统先验信息的依赖,具有较高的实用性和有效性。According to a class of nonlinear uncertain system subject to external disturbance,a sliding H2 guaranteed cost control based on disturbance observer is proposed. First,a sliding control containing disturbance estimate was designed according to composite sliding surface. Second,based on H∞and regional pole assignment theories,disturbance observer was designed to obtain the disturbance estimate. Finally,selection principle of control parameters was proposed to realize the H2 guaranteed cost control. Simulation results demonstrate that the proposed strategy can successfully eliminate the chatter phenomenon in control input,and avoid the dependence on system prior information,showing the high practicability and effectiveness.

关 键 词：非线性不确定系统 滑模控制 H2保性能控制 扰动观测器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]