改善闭环系统性能的方法

广东工业大学学报 ›› 2005, Vol. 22 ›› Issue (3): 59-63.

改善闭环系统性能的方法

广东工业大学自动化学院；广东工业大学自动化学院广东广州510090；广西民族大学计算机与信息学院；广西南宁530006；广东广州510090；广东广州510090；

出版日期:2005-07-02 发布日期:2005-07-02
基金资助:
国家自然科学基金(60274030);国际合作项目(2003C50302);广东省科技攻关项目(C31801)

Methods of Improving the Performance of Closed Loop System

(1.Faculty of Automation,Guangdong University of Technology,Guangzhou 510090,China;2.College of Computer and Information Science,Guangxi University for Nationalities,Nanning 530006,China)

Online:2005-07-02 Published:2005-07-02

摘要/Abstract

摘要： 提出I-变速趋近律和m-变速趋近律.利用该趋近律方法,设计了基于离散时间线性定常系统的变结构控制(VSC).系统在该变结构控制的作用下,趋近运动和滑动运动的速度是可变的;保证了趋近模态和滑动模态的品质,并能削弱闭环系统的抖振,从而改善了闭环系统的品质.通过实例仿真,验证了该设计方法是有效和可行的.

关键词: 变速趋近律；变结构控制(VSC)；准滑动模态带；离散系统；

Abstract: In this paper,two novel approach laws called I-variable speed reaching law and m-variable speed reaching law are brought forward and the design method of VSC is given which is obtained straightforward by the reaching law method,based on the discrete time linear constant system.It is shown that under the action of the VSC on the system the reaching mode and sliding mode have changeable speeds,the good performance of reaching mode is kept and the chatter of quasi-sliding mode is weakened very well.Therefore,the performance of the closed loop system is improved.The simulation results have revealed that the design methods are effective and feasible.

Key words: variable speed reaching law； veriable structure control(VSC)； quasi-sliding mode sector； discrete system；

王勇；张新政；张荣明； . 改善闭环系统性能的方法[J]. 广东工业大学学报, 2005, 22(3): 59-63.

WANG Yong~(1,2),ZHANG Xin-zheng~1,ZHANG Rong-ming~1. Methods of Improving the Performance of Closed Loop System[J]. Journal of Guangdong University of Technology, 2005, 22(3): 59-63.

参考文献

[1] 高为炳. 离散时间系统的变结构控制[J]. 自动化学报. 1995(02)

[2] 高为炳,程勉. 变结构控制系统的品质控制[J]. 控制与决策. 1989(04)

[1] Furuta K.Sliding mode control of a discrete systems. Systems and Control Letters . 1990

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