一种圆筒型转子的中空型超声电机的研制

针对某些飞行器舵机控制系统需要旋转型超声电机具有中空结构、转子与负载结构融合以及具备一定的保持力矩等特定工程技术需求,该文提出了一种圆筒型转子与舵翼结构一体设计(外圈输出)的中空型超声电机,开展了该型电机的结构及预压力施加方案的设计和试验研究。建立了电机定子的有限元模型,分析了不同结构尺寸对定子模态的影响,进行了结构尺寸的灵敏度分析,优化了定子的结构,计算出其共振频率、振动幅值。最后试制出了原理样机。实验表明,在激励电压为450 V,激励频率为40.2 kHz时,样机的空载转速可达208 r/min,堵转力矩可达0.35 N·m。

Development of A Hollow Ultrasonic Motor With Cylindrical Rotor

In this paper, a hollow ultrasonic motor with integrated design of cylindrical rotor and rudder wing (outer ring output) is proposed to meet the needs of a rotating ultrasonic motor control system with a hollow structure, a fusion of rotor and load structure and a certain holding torque of some aircraft rudder control systems. The design and experimental study of the structure and pre pressure applied scheme of the motor are carried out. The finite element model of the stator of the motor is established, and the influences of different structure sizes on the stator mode are analyzed. The sensitivity analysis of the structure size is carried out, the structure of the stator is optimized, and the resonance frequency and vibration amplitude are calculated. Finally, a prototype has been fabricated. The experimental results show that when the excitation voltage is 450 V and the excitation frequency is 40.2 kHz, the no load speed of the prototype can reach 208 r/min and the blocking torque can reach 0.35 N·m.