摘要：永磁同步直线电机构成的直线电动舵机具有结构简单，体积小，高动态响应能力等特性。本文介绍了永磁同步直线电机推力波动产生的原因，对国内外直线电动舵机的应用背景和永磁同步直线电机的发展现状进行综述，分析直线电机直接驱动中控制策略的特点。

关键词：永磁同步电机；直线电机；控制策略

Abstract: The linear electromechanical actuator composed by permanent magnet synchronous linear motor has the advantages of simple structure, small size, high dynamic response and other characteristics which can enhance the missiles precisionguided. The paper presented the reason of thrust wave and discussed the permanent linear magnet synchronous motor and the application background of the linear electromechanical actuator, analysed the characteristics of a variety of linear motor drive control strategy.

Key words: permanent magnet synchronous motor; linear motor; control strategy