Three factors of influencing rotation speed fluctuation, torque, feedback of rotation speed and plus of speed controller, were analyzed. Resolvents in allusion to each factors were given.

• 摘要分析了影响永磁交流伺服系统转速脉动的三个主要因素，即转矩脉动、转速反馈和速度控制器增益，并针对各个影响因素提出了相应的解决措施，仿真结果表明了理论分析的正确性。