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针对复合材料超声直线电机振动体与导轨表面间存在冲击作用的特点，提出一种冲量分析模型计算电机的摩擦驱动力和摩擦转换效率。
According to the characteristics of the impact between the vibrating body and the guide rail surface of the composite ultrasonic linear motor, an impulse analysis model is proposed to calculate the frictional driving force and the frictional conversion efficiency of the motor.