永磁同步电机自适应反步滑模控制

Adaptive Backstepping Sliding Mode Control of Permanent Magnet Synchronous Motor

为了提高永磁同步电机的控制性能,避免电机参数的时变性以及外部负载变化对系统的影响,提出了一种自适应反步滑模的永磁同步电机速度跟踪控制方法。对定子电阻、转子磁链和负载转矩进行实时估计,在保证系统稳定性的前提下,推导出了控制律和参数自适应律,从而实现电机转速的非线性控制。为了消除速度跟踪的残留误差,在系统输入端引入了电机转速误差积分项。最后通过仿真证明了本文所提方法的有效性和正确性。

In order to improve the control performance of permanent magnet synchronous motor(PMSM)to avoid the time variation of motor parameters and the influence of external load on the system,an adaptive backstepping sliding mode based speed tracking control method for PMSM is proposed.In view of the above problems,put forward an adaptive backstepping sliding mode of the permanent magnet synchronous motor speed tracking control method.The stator resistance,rotor flux and load torque are estimated in real time.The control law and the adaptive law of parameters are derived under the premise of ensuring the stability of the system,so the nonlinear control of the motor speed is realized.In order to eliminate the residual error of speed tracking,the speed error integral term is introduced in the control input to eliminate the residual error.Finally,the simulation results show that the proposed method is effective and accurate.