基于李雅普诺夫直接法的电液伺服系统控制  

Control method for electro-hydraulic servo system based on Lyapunov direct method

作　　者：贾超[1,2] 吴爱国[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]天津理工大学自动化学院,天津300384

出　　处：《吉林大学学报（工学版）》2012年第3期696-701,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家科技重大专项项目(2009ZX04004-031)

摘　　要：针对一类常见的电液伺服系统模型,提出了一种基于李雅普诺夫(Lyapunov)直接法的位置跟踪控制方法。为此类系统构造了一种形式简单的Lyapunov函数,并给出了确定其相关参数及求取控制律的具体方法,从而确保了整个系统的渐近稳定,适用于所有数学模型具有此类形式的电液伺服系统。以超低速锻造液压系统为例,应用该方法成功构造出了Lya-punov函数,并得到了使系统渐近稳定的控制律。仿真结果证实了本文方法的有效性。A position tracking control scheme was proposed for a common class of electro-hydraulic servo system based on the Lyapunov direct method.A simple Lyapunov function was constructed for the system and specific methods were given to decide the related parameters and to get the control law.The system stability was ensured symptotically and the scheme could be applied to all electro-hydranlic servo systems with this kind of mathematical model.Taking a super low-speed hydraulic press system as an example,the proposed control scheme was applied successfully.The simulation result proved the validity of the proposed control scheme.

关 键 词：自动控制技术 LYAPUNOV直接法 电液伺服系统 锻造液压系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]