【摘要】 超声电机作为一种新型特种电机,有着广泛的应用。由于超声电机应用压电陶瓷作为驱动元件,使得定子产生受迫振动驱动动子运动,从理论上具有高的位置分辨率,为了确定超声电机的位移分辨率,文章从超声电机运行机理出发,分析了影响超声电机位置分辨率的因素为定子/转子摩擦材料系统的瞬态响应。应用单片机作为控制器,通过程序控制超声电机驱动器,测试了旋转型行波超声电机的位置分辨率,得到旋转型超声电机的位置分辨率可以达到0.0078°。得到结论:得到了超声电机分辨率,且发现超声电机定子/转子摩擦材料系统的阻尼是影响超声电机位移分辨率的关键因素之一,超声电机定子和转子摩擦材料系统非线性特性明显。更多还原

【Abstract】 Traveling wave type rotary ultrasonic motors( TRUM) as a newtype motor,has a wide range of applications. Ultrasonic motor,that utilizes the vibration of t the stator and the reverse piezoelectric effect of piezoelectric materials,has a high position resolution theoretically. Based on operating mechanism of ultrasonic motor,influence of transient response of ultrasonic motor is analyzed. Using single chip computer as controller,we test the TRUM ’s position resolution. TRUM60’s position resolution is 0. 0078°. The damping of TRUM ’s stator / rotor system is one of the most influence factors for position resolution. Operating of ultrasonic motor has the nonlinear characteristics.更多还原