单臂圆筒旋转超声电机优化设计  

Optimization Design of Single-Arm Cylinder Rotary Ultrasonic Motor

作　　者：贾爽 杨小辉 宋汝君 程祥[1] JIA Shuang;YANG Xiao-hui;SONG Ru-jun;CHENG Xiang(School of Mechanical Engineering,Shandong University of Technology,Shandong Zibo 255000,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255000

出　　处：《机械设计与制造》2024年第11期37-40,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51905316);中国博士后科学基金(2021M691968)。

摘　　要：为了解决现有圆筒型超声电机中存在的定子结构复杂及振动耦合问题,设计了一种单臂圆筒旋转超声电机。所设计电机仅使用一组压电陶瓷片即可直接实现圆筒中两列驻波的激励,而非借助纵振陶瓷组和弯振陶瓷组的配合。介绍了单臂圆筒旋转超声电机的工作原理,确定了电机定子的结构参数,并基于有限元对其进行了仿真,在驱动齿所选质点处得到了椭圆的振动轨迹。仿真结果表明该优化设计能够简化电机结构,避免振型干涉,提高电机的机械输出能力。In order to solve the problems of complex stator structure and vibration coupling in the existing cylindrical ultrasonic motor,a single-arm cylinder rotary ultrasonic motor was designed.Two lines of standing waves can be directly excited in the cylinder with the only a set of piezoelectric ceramics rather than using the combination of the longitudinal vibration ceramic group and the bending vibration ceramic group in the designed motor.The working principle of the single-arm cylinder rotary ultrasonic motor was introduced,the structural parameters of the stator were determined,and the motor was simulated based on the finite element method,the ellipse vibration trajectories were obtained at the selected particles of the drive teeth.The result of simulation shows that the optimization design can simplify the structure,avoid the interference of mode,and improve the mechanical output capacity of the motor.

关 键 词：超声电机 换能器 圆筒 行波 有限元法 

分 类 号：TH16[机械工程—机械制造及自动化] TM359.9[电气工程—电机]