基于广义预测控制和扩展状态观测器的永磁同步电机控制.PDFVIP

第 32卷第 12期 2015年 12月 控 制 理 论 与 应 用 Control Theory Applications Vol. 32 No. 12 Dec. 2015 基于广义预测控制和扩展状态观测器的永磁同步电机控制 DOI: 10.7641/CTA.2015.50144 刘旭东1, 李 珂1, 孙 静1,2, 符晓玲1,3, 张承慧1? (1. 山东大学控制科学与工程学院,山东济南 250061; 2. 山东工商学院信息与电子工程学院,山东烟台 264005; 3. 昌吉学院物理系,新疆昌吉 831100) 摘要:在电动汽车等工况复杂的系统中,实现永磁同步电机驱动系统的快响应和强鲁棒性控制历来是研究的重 点和难题.预测控制策略可实现快速的动态响应,但依赖电机的数学模型. 本文结合广义预测控制理论和扩展状态 观测器,提出了一种新型的永磁同步电机转速跟踪控制方法. 首先基于连续时间非线性系统的广义预测控制方法, 设计了速度跟踪控制器;然后针对外部扰动引起的电机性能下降问题,设计了扩展状态观测器估计系统扰动,通过 对扰动量的补偿,提高了鲁棒性;而且控制器参数容易调节. 试验结果表明,电机从静止到1000 r/min,与PI控制相 比,超调量小,响应速度快. 特别是在电机运行过程中外加负载扰动时,转速跌落更小,且更快的恢复到给定值. 关键词: 电动汽车驱动;永磁同步电机;广义预测控制;扩展状态观测器 中图分类号: TM341 文献标识码: A Generalized predictive control based on extended state observer for permanent magnet synchronous motor system LIU Xu-dong1, LI Ke1, SUN Jing1,2, FU Xiao-ling1,3, ZHANG Cheng-hui1? (1. School of Control Science and Engineering, Shandong University, Jinan Shandong 250061, China; 2. School of Information and Electronic Engineering, Shandong Institute of Business and Technology, Yantai Shandong 264005, China; 3. Department of Physics, Changji University, Changji Xinjiang 831100, China) Abstract: For a permanent magnet synchronous motor, the design of a drive system with fast response and strong robustness has always been the key and difficult problem in complicate working conditions. The predictive control strategy provides a fast dynamical response, but it depends on the mathematical model of the motor. Combining the generalized predictive control theory and the extended state observer, we propose a novel speed tracking control method for the permanent magnet synchronous motor. Firstly, based on the gen- eralized predictive control theory of continue time nonlinear system, we design a speed tracking controller. Then, to deal with the prob- lem of degradation in control performance due to the large perturbation, we design an extended state observer to estimate the disturbance and improve the robustness by compensating for the disturbance, thus mak