Parameter self-identification algorithm and system for permanent magnet synchronous motor

The invention provides a parameter self-identification algorithm and system for a permanent magnet synchronous motor, and aims at the trend that the permanent magnet synchronous motor is widely applied to various fields at present, so that a servo motor controller has a parameter identification function and becomes an urgent demand of the system. According to the technical scheme provided by the invention, the stability of the performance of the control motor can be ensured through initial U-phase angle identification, motor pole pair number identification, rotational inertia identification, electrode inductance identification and motor phase resistance identification, and necessary parameters are identified in combination with engineering practice, so that the controller has wider adaptability; the debugging time of the controller is shortened, and the universality of the controller is improved. 本申请提供了一种用于永磁同步电机参数自识别算法及系统，该方法针对当前永磁同步电机广泛用于各个领域的趋势，使伺服电机控制器具有参数辨识功能成为系统迫切需求。本发明提供的技术方案是：通过对初始U相角度辨识、电机极对数辨识、转动惯量辨