EPS steering motor stalling protection method

The invention discloses an EPS steering motor stalling protection method, and relates to the technical field of motor control. The technical key points are as follows: firstly, the locked-rotor working condition of the motor is identified according to the current angular speed of a motor rotor and the current of a motor bus, secondly, misjudgment signals are filtered out through a confirmation link, and then the speed of reducing the bus current is determined by combining the working conditions of a whole vehicle and a steering system. The method has the advantages that the accuracy and rationality of locked-rotor identification can be improved, and the robustness of a steering system during locked-rotor protection is improved. 本发明公开了一种EPS转向电机堵转保护方法，涉及电机控制的技术领域。其技术要点是：首先是根据当前电机转子角速度和电机母线电流，来识别电机的堵转工况，其次通过确认环节过滤掉误判信号，然后结合整车、转向系统工况，决定降母线电流的速率。本发明具有的优点：可以提高堵转识别的准确性、合理性，并提高堵转保护时，转向系统的鲁棒性。