摘要
采用一种基于无源性控制算法对无刷直流电动机进行速度控制。利用电机的电压方程、电磁转矩方程和运动方程,推导出基于电机状态误差变量的能量函数,并针对实际运行过程中电机存在负载扰动问题,引入负载扰动观测器,通过设计合适的控制律,使得电机状态误差变量的能量函数能收敛于期望值。仿真与实验结果表明,该控制算法对无刷直流电动机速度控制具有控制简单、鲁棒性较好和稳态性能良好等优点。
To improve the speed control performance of brushless DC motor,a speed control algorithm based on passivity theory was applied. The passivity of the control system of Brushless DC motor was analyzed,with the voltage equation,torque equation and motion equation of brushless DC motor. In order to improve the performance of the controller,a load disturbance observer was designed for compensating unknown load disturbances. A suitable control law can make the variables of the motor state error energy function converge to the desired value. Simulation and experiment show that the passive control has the advantages of simple control,good robustness and good performance for brushless DC motor.
出处
《微特电机》
北大核心
2016年第8期122-125,共4页
Small & Special Electrical Machines
