PMSM的自适应滑模观测器无传感器控制  

Adaptive sliding mode observer for speed-sensorless control of PMSM

作　　者：黄雷[1] 赵光宙[1] 贺益康[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2007年第7期1107-1110,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(50477310);高等学校博士学科专项科研基金资助项目(20040335003)

摘　　要：为实现永磁同步电机(PMSM)无速度传感器的运行,提出了一种基于自适应滑模观测器的非线性速度/位置估算方法.基于永磁同步电机的数学模型,根据实测电流和观测电流之间的误差构成滑模面,应用观测得到的反电势计算出估计的转子位置角,应用模型参考自适应算法得到转子速度.基于Lyapunov函数分析了观测参数的收敛性,并对滑模增益的选择进行了分析.在此基础上设计了基于自适应滑模观测器的永磁同步电机无传感器矢量控制系统,控制算法简洁,易于实现.实验结果表明,基于自适应滑模观测器的速度/位置估算方法能够准确观测出电机的位置和速度,系统具有良好的稳态精度和动态性能.A nonlinear adaptive sliding mode speed/position observer was proposed for sensorless control of permanent magnet synchronous motors （PMSM）. The sliding surface was defined based on the errors between actual and estimated currents. The estimated back electro-motive force （EMF） was observed to calculate the position of the rotor, and the speed of the rotor was obtained by the adaptive velocity estimator. Convergence of the estimated parameters was analyzed based on the Lyapunov function. The choice of sliding mode gain was also analyzed. A sensorless vector control system based on the sliding mode observer was implemented. The proposed algorithm is easy to design and implement. Experimental results showed that the proposed method can precisely estimate the speed and position of the rotor, and that the system has good dynamic and static performances.

关 键 词：永磁同步电机 滑模观测器 无传感器 模型参考自适应观测器 

分 类 号：TM351[电气工程—电机]