基于遗传算法的控制系统校正  

Control System Compensation Based on Genetic Algorithm

作　　者：周永华[1] 刘阳[1] 

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《控制工程》2012年第4期603-606,共4页Control Engineering of China

基　　金：广西科学基金项目(桂科自0991060)

摘　　要：串联校正是控制系统校正中常用的几种校正方式之一。在进行串联校正时,经常使用超前校正装置和滞后校正装置这两种校正装置。然而,在应用这两种校正装置对控制系统进行串联校正时存在很多的缺点和不足,如只能对有限的控制系统进行校正、在进行校正时这两种装置的参数的求解过程过于复杂等。为了克服这些缺点和不足,提高控制系统校正的效率,首先将超前校正装置和滞后校正装置进行串联构成多级校正装置,然后采用遗传算法程序直接对多级校正装置的参数进行寻优,找出满足性能指标要求的多级校正装置的参数,从而实现控制系统的校正。仿真结果表明,这种方法不但简化了控制系统校正的过程,而且扩展了可校正系统的范围,对控制系统设计的研究具有一定的参考价值。Cascade compensation is one of the prevalent ways of control system compensating. In the process of cascade compensation, the lead compensation unit and the lag compensation unit are the two commonly used units. But, there still are shortcomings when these units are used in cascade compensation, e. g. they can only be used on a limited number of control systems, and the solving process for the parameters of the compensation is very complicated. In order to overcome these shortcomings, in this paper, a multistage compensation unit consisting of a lead compensation unit and a lag compensation unit is proposed. The parameters are directly optimized u- sing genetic algorithm to find the parameters which can satisfy the performance criteria. The simulation results show that the proposed method can simplify the compensation process and extend the application range of the compensation systems. It also has value for the study of control system design.

关 键 词：串联校正 遗传算法 多级校正装置 寻优 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]