| 基于EKF的感应电机无速度传感器矢量控制系统 |
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| 引用本文： | 吴玲丽,沈艳霞.基于EKF的感应电机无速度传感器矢量控制系统[J].江南大学学报(自然科学版),2009,8(4):403-407. |
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| 作者姓名： | 吴玲丽 沈艳霞 |
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| 作者单位： | 江南大学,通信与控制工程学院,江苏,无锡,214122 |
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| 基金项目： | 江苏省自然科学基金项目 |
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| 摘 要： | 给出了一种基于扩展卡尔曼滤波(EKF)的感应电机无传感器矢量控制系统转速和负载转矩同时估算的方法.在矢量控制的基础上,将电机的运动方程作为一个状态方程,把电机负载转矩看作系统的扩展状态量,根据定子侧测量的电压、电流值,由EKF估算出电机转子磁链、转速及负载转矩.在此基础上,采用负载转矩前馈控制型转速控制器,提高系统抵御负载扰动的能力.仿真结果表明,无速度传感器矢量控制系统具有良好的动态控制性能,所提出的EKF估计器能够准确地估计转子磁链、转速及负载转矩.
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| 关 键 词： | 感应电机 无速度传感器 扩展卡尔曼滤波 速度控制器 |
Sensorless Vector Control System of the Induction Motor Based on EKF |
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| WU Ling-li,SHEN Yan-xia.Sensorless Vector Control System of the Induction Motor Based on EKF[J].Journal of Southern Yangtze University:Natural Science Edition,2009,8(4):403-407. |
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| Authors: | WU Ling-li SHEN Yan-xia |
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| Institution: | School of Communication and Control Engineering;Jiangnan University;Wuxi 214122;China |
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| Abstract: | To estimate the rotor speed and load torque,a novel method based on extended Kalman filter(EKF) is proposed for the sensorless vector control system of the induction motor(IM).The motion relationship is regarded as a state equation,and the load torque is taken as an extended state of the system by using the EKF.Therefore,the rotor speed,load torque and rotor flux can be estimated based on the stator currents and stator voltages according to the proposed EKF.Besides,a speed controller with load torque feedfo... |
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| Keywords: | induction motor speed sensorless extend Kalman filter speed controller |
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