A Rotor Speed and Load Torque Observer for PMSM Based on Extended Kalman Filter
作者： Zheng Zedong , Li Yongdong , Maurice Fadel , Xiao Xi
关键词: Kalman filter 、 Control theory 、 Rotor (electric) 、 Computer science 、 State observer 、 Observer (quantum physics) 、 Extended Kalman filter 、 Electronic speed control 、 Control engineering 、 Synchronous motor 、 Alpha beta filter
摘要: This paper proposed a state observer based on extended kalman filter (EKF) for the rotor speed and load torque observation of permanent magnet synchronous motor (PMSM). can be used to estimate precise position in servo systems with only optical encoder limited accuracy. By using observed instead values got directly from encoder, control performances greatly improved. The also give which as feedforward compensation PI controller. improve performance during change. Kalman is solve nonlinear equation observer, considering influence parameter errors noise measurement. So it very robust errors.
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