异步电动机转子电阻在线辨识和反步速度控制  

On-line Rotor Resistance Identification and Backstepping Control for Asynchronous Motor

作　　者：郭林杰 于海生[1] 吴贺荣[1] GUO Lin-jie;YU Hai-sheng;WU He-rong(College of Automation,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学自动化学院

出　　处：《微特电机》2020年第1期56-59,67,共5页Small & Special Electrical Machines

基　　金：国家自然科学基金资助项目(61573203)

摘　　要：针对异步电动机转子电阻变化会对矢量控制产生影响的问题,采用极点配置的方法设计异步电动机状态全阶观测器,以实时估计转子磁链。以异步电动机自身作为参考模型,设计的全阶观测器为可调模型,构建模型参考自适应系统,采用波波夫超稳定性理论来设计转子电阻在线辨识算法,避免转子电阻变化对矢量控制系统的影响。设计反步控制器,以获得更快的动态响应速度和更好的稳态性能。仿真实验证明,该算法可以快速地估计转子电阻,提高控制系统的控制精度。To solve the problem that the change of rotor resistance of asynchronous motor affects the accuracy of vector control,the poles assignment method was introduced to design the full order state observer of asynchronous motor to estimate the rotor flux in real time.The model reference adaptive system was built by taking the asynchronous motor itself as the reference model and the full order observer as the adjustable model.The on-line identification algorithm of rotor resistance was designed by Popov's hyperstability theory to avoid the influence of rotor resistance on vector control system.The backstepping method was used to design the controller instead of the traditional PI controller to obtain faster dynamic response and better steady-state performance.Simulation results showed that the on-line identification algorithm of rotor resistance can quickly estimate the rotor resistance,and the designed backstepping controller can improve the control accuracy.

关 键 词：异步电动机 模型参考自适应系统 转子电阻辨识 全阶观测器 反步控制 

分 类 号：TM343[电气工程—电机]