斩波串级调速系统的自抗扰控制  

Auto Disturbance Rejection Control for Chopper Cascade Speed Control System

作　　者：姜萍[1,2] 王兵树[1] 林永君[1] 张军伟[1,3] 

机构地区：[1]华北电力大学自动化系,河北保定071003 [2]河北大学电子信息工程学院,河北保定071002 [3]华北保定电力职业技术学院,河北保定071056

出　　处：《电机与控制应用》2009年第6期17-20,59,共5页Electric machines & control application

基　　金：国家科技部科技型中小企业技术创新基金(06c26211300065);河北省教育厅科研计划项目(Z2008414)

摘　　要：针对斩波串级调速系统中控制器的设计问题,提出用自抗扰控制器(ADRC)作为转速调节器,PI控制器为电流调节器,构成斩波串级调速的ADRC-PI双闭环控制系统。利用跟踪微分器安排合理的过渡过程以降低超调量,扩张状态观测器实时估计系统模型中的未知作用及内外扰动,并进行补偿成为积分串联型系统,控制律是误差和误差微分信号的非线性综合而避免了积分作用。通过斩波串级调速系统仿真试验,体现出该控制系统的设计不依赖于数学模型,且抗扰动能力强、响应快、超调量小,改善了系统的动态品质。In order to solve the design problem of chopper cascade speed control system, a double-close-loop control system based on Auto-Disturbance-Rejection-Control （ADRC） is presented. In which, ADRC is used as speed regulator （ASR） and PI controller is used as current regulator （ACR）. By using tracking differentiator （TD）, a desirable transition response can be defined to reduce overshoot when the input changes. The model uncertainty and external interference can be accurately estimated and composed to a form of integrator series by the extended state ob- server （ESO）. The control law is a nonlinear function of state error and its differential without integrator. The simula- tion and experimental results of the proposed motor control strategy show that the design of the control system does not rely on mathematical models. This system has strong anti-disturbance capacity, fast response, small overshoot, so the system dynamic quality is improved.

关 键 词：自抗扰控制器 斩波串级调速系统 双闭环 

分 类 号：TM921.53[电气工程—电力电子与电力传动]