改进扰动观测优化轮毂电机无位置控制

为提高车体内置式轮毂永磁同步电机驱动系统的控制可靠性,针对传统扰动观测造成的噪声放大问题,提出基于改进扰动观测器的反电动势电机无位置传感器控制算法,算法将电流反电动势作为观测干扰量进行建模,以实现扰动准确估计,进而通过反正切估计转子的精确位置,同时基于转子速度进行位置误差补偿,实现无位置传感器电机的鲁棒控制,仿真实验表明,改进算法在在电机不同工况和负载下能准确估计转子位置,具有较好的适应能力和位置跟踪补偿能力,验证了算法的有效性。

Wheel Hub Motor without Position Sensor Adaptive Predictive Control

To improve the control reliability of the built-in wheel hub permanent magnet synchronous motor drive system,a sensorless control algorithm for back-EMF motor based on improved disturbance observer is proposed,aiming at the problem of noise amplification caused by traditional disturbance observation.The algorithm models the current state back-EMF as the amount of observed disturbance to achieve disturbance preparation estimation,and then,estimates the rotor position by arc tangent,and at the same time,performs position error compensation based on the rotor speed to achieve robust control of the sensorless motor.Simulation experiments show that,the improved algorithm can accurately estimate the rotor position under different working conditions and loads of the motor,and has better adaptability and position tracking compensation ability,which verifies the effectiveness of the algorithm.