基于预测函数控制和扰动观测器的永磁同步电机速度控制
发布时间：2019-08-24 16:35
【摘要】：设计了基于预测函数控制的速度控制器,以减小永磁同步电机的转矩波动,提高电机的转速控制精度。针对因外部扰动因素引起的控制器跟踪性能下降问题,设计了基于预测函数控制和扰动观测器的双环控制器;通过扰动观测器估计系统扰动,并据此产生转矩电流补偿量对控制量进行前馈修正,从而实现扰动的抑制。实验结果显示:当电机从静止跟踪到设定600r/min转速时,系统没有超调,稳态精度为2r/min;当电机以600r/min稳速运行并加入1.6N·m的转矩扰动时,转速最大波动为5r/min。与传统的PI控制算法相比,所设计的控制器使转速波动减小了4.2%。仿真分析和实验数据表明:基于预测函数控制和干扰观测器的控制器能够有效地抑制扰动,提高系统转速跟踪精度。
[Abstract]:A speed controller based on predictive function control is designed to reduce the torque fluctuation of permanent magnet synchronous motor (PMSM) and improve the speed control accuracy of PMSM. In order to solve the problem of controller tracking performance degradation caused by external disturbance factors, a double-loop controller based on predictive function control and disturbance observer is designed, and the disturbance is estimated by disturbance observer, and the control quantity is modified by torque and current compensation, so as to suppress the disturbance. The experimental results show that when the motor moves from static tracking to setting 600r/min speed, the system has no overshoot and the steady-state accuracy is 2 r 鈮，
本文编号：2529069
[Abstract]:A speed controller based on predictive function control is designed to reduce the torque fluctuation of permanent magnet synchronous motor (PMSM) and improve the speed control accuracy of PMSM. In order to solve the problem of controller tracking performance degradation caused by external disturbance factors, a double-loop controller based on predictive function control and disturbance observer is designed, and the disturbance is estimated by disturbance observer, and the control quantity is modified by torque and current compensation, so as to suppress the disturbance. The experimental results show that when the motor moves from static tracking to setting 600r/min speed, the system has no overshoot and the steady-state accuracy is 2 r 鈮，
本文编号：2529069
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