This dissertation mainly investigates some robust control strategies of the electromechanical actuator which is supposed to be activated by the sinusoidal permanent magnet synchronous motor ( pmsm ) and limited angle torque motor ( latm ) 本文主要研究了基于正弦波永磁同步电机( pmsm )及有限转角力矩电机( latm )驱动的电动舵机的鲁棒控制策略。