| Position Sensorless Control for Permanent Magnet Synchronous Motor Using Sliding Mode Observer |
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| 作者姓名： | 陈益广 傅涛 李响 |
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| 作者单位： | School of Electrical and Automation Engineering, Tianjin University, Tianjin 300072, China |
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| 摘 要： | An approach of position sensorless control for permanent magnet synchronous motor （ PMSM ） is put forward based on a sliding mode observer. The mathematical model of PMSM in a stationary αβ reference frame is adopted, and the system is controlled by the digital signal processor （ DSP; TMS320LF2407 according to the control achieve closed loop operation of the motor, the stator theory of sliding mode observer. In order to magnetic field should be vertical with the rotor magnetic field and be synchronous with rotor rotating, so the position and speed of PMSM is estimated in real time and the estimated position is modified continuously. The simulation results indicate that the proposed observer has high precision is more robust to the parametric variation and load in estimation of PMSM position and speed, and torque disturbance.
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| 关 键 词： | 位置传感器 定位控制 永磁同步电机 滑动模式 数字信号处理 |
| 收稿时间： | 2005-01-27 |
Position Sensorless Control for Permanent Magnet Synchronous Motor Using Sliding Mode Observer |
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| CHEN Yiguang,FU Tao,LI Xiang.Position Sensorless Control for Permanent Magnet Synchronous Motor Using Sliding Mode Observer[J].Transactions of Tianjin University,2005,11(5):338-342. |
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| Authors: | CHEN Yiguang FU Tao LI Xiang |
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| Abstract: | An approach of position sensorless control for permanent magnet synchronous motor (PMSM) is put forward based on a sliding mode observer. The mathematical model of PMSM in a stationary αβ reference frame is adopted, and the system is controlled by the digital signal processor (DSP) TMS320LF2407 according to the control theory of sliding mode observer. In order to achieve closed loop operation of the motor, the stator magnetic field should be vertical with the rotor magnetic field and be synchronous with rotor rotating, so the position and speed of PMSM is estimated in real time and the estimated position is modified continuously. The simulation results indicate that the proposed observer has high precision in estimation of PMSM position and speed, and is more robust to the parametric variation and load torque disturbance. |
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| Keywords: | permanent magnet synchronous motor position sensorless control sliding mode observer digital signal processor |
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