关键词: 永磁直流电动机, 正则化参数辨识, 方块脉冲函数

Abstract: Online fault diagnosis and armature speed control of permanent magnet DC motor heavily relied on the accuracy of motor parameter setting. In order to enhance its accuracy and real-time estimation, a new method was researched which was also feasible in an inconstant load torque condition. By implementing the measured voltage, load torque, output speed and current, into a motor dynamic model, which was discretized by block pulse function, the initial solution of motor parameters could be achieved. Introduce a regularization item which was the different between the calculated EMF coefficient and torque coefficient into the motor dynamic model again and through this recursive regression the final solution was arrived. In order to validate this method, parameters calculated were compared with those from Simulink parameter estimation, and the current and speed curve calculated were also comparable to the real test data when implementing those parameters into a Simulink model.

Key words: permanent magnet DC motor, regularization parameter estimation, block pulse function