交流伺服系统改进型IMC-PI控制方法  

Improved IMC-PI Control of AC Servo System

作　　者：杨亚腾 赵志诚[1] 贾彦斌[2] YANG Ya-teng;ZHAO Zhi-cheng;JIA Yan-bin(School of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;North Automatic Control Technology Institute,Taiyuan 030006,China)

机构地区：[1]太原科技大学电子信息工程学院,太原030024 [2]北方自动控制技术研究所,太原030006

出　　处：《火力与指挥控制》2021年第9期83-87,共5页Fire Control & Command Control

基　　金：山西省重点研发计划基金资助项目(201803D121025)。

摘　　要：针对三相交流异步电机速度伺服系统,提出一种基于内模原理的具有全局鲁棒性改进型PI(改进型IMC-PI)控制策略。为降低负载扰动对伺服系统的影响,引入一种误差微分表达式的作用函数,并与IMC-PI控制器串联,系统的调节过程分为作用函数趋向于零和等于零两个阶段;随后将全局滑模控制的思想引入到作用函数中,加入误差补偿项,使得系统调节过程只有等于零的阶段,系统获得全局鲁棒性。为消除微分作用的高频干扰,在作用函数中引入不完全微分。仿真结果表明,该方案能有效提升系统对负载扰动的抗扰性,并有效改善响应速度,使系统获得良好的动静态特性以及鲁棒性。An improved PI(improved IMC-PI)control strategy,with global robustness based on internal model principle,is proposed for the speed servo system of three-phase AC asynchronous motor.To reduce the influence of the load disturbance on the servo system,a kind of action function of the deviation differential expression is introduced,and it is connected with the IMC-PI controller in series,so that the adjustment process of the system is divided into two stages,i.e.,the action function tends to zero and equals to zero.The system achieves global robustness.To eliminate the high frequency interference of differential action,incomplete differential is introduced to replace the pure micro item in the action function.The simulation results show that the scheme can effectively improve the system's immunity to load disturbance,improve the response speed,and make the system obtain good dynamic and static characteristics and robustness.

关 键 词：异步电机 速度伺服 作用函数 全局鲁棒 不完全微分 

分 类 号：TM343[电气工程—电机]