端部激励式直线超声波电机的绝缘优化设计  

Insulation Optimization Design of End Excitation Linear Ultrasonic Motor

作　　者：邓馨晨 姚政 陆旦宏[1] 程桂林[1] 钱城辰 DENG Xinchen;YAO Zheng;LU Danhong;CHENG Guilin;QIAN Chengchen(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院电力工程学院,南京211167

出　　处：《微电机》2024年第1期7-13,31,共8页Micromotors

基　　金：江苏省产学研合作项目(BY2020419);江苏省配电网智能技术与装备协同创新中心开放基金项目(XTCX202008)。

摘　　要：端部激励式耦合型直线超声波电机压电陶瓷镀银层表面与金属弹性体凸出结构间隔距离较近,限制了施加电压的幅值,进而对电机的驱动性能有较大影响。本文对金属弹性体的凸出结构进行优化设计,分别设计了基于空气绝缘的凸出结构和基于树脂绝缘的复合凸出结构。理论分析表明,基于空气绝缘的凸出结构电机虽然具有最小的最大电场强度,有利于绝缘,但是其驱动性能较弱。而基于树脂绝缘的复合凸出结构电机具有比较平衡的绝缘性能和驱动性能。文章制作了样机并进行了实验,实验结果表明采用树脂绝缘的复合凸出结构电机较之传统端部激励式耦合型驻波直线超声波电机,其最大空载速度由41.56 mm/s提升为72.40 mm/s,性能提升较为显著。For coupled-mode linear ultrasonic motor based on end excitation,the distance between the silver-plated surface of the piezoelectric ceramic and the protruding structure of the metal elastomer was relatively close,which limited the amplitude of the applied voltage and had a significant impact on the driving performance of the motor.This article optimized the protruding structure of the metal elastomers by designing a protruding structure based on air insulation and a composite protruding structure based on resin insulation.Theoretical analysis shows that although the protruding structure motor based on air insulation has the smallest maximum electric filed intensity,which is favorable for insulation,its driving performance is weak.The composite protruding structure motor based on resin insulation has a relative balance of insulation performance and driving performance.The article made a prototype and conducted experiments.Comparing to the traditional coupled-mode standing wave linear ultrasonic motor based on end excitation,the experimental results showed that maximum no-load speed of the composite protruding structure motor with resin insulation had a significant improvement,which was from 41.56 mm/s to 72.40 mm/s.

关 键 词：超声波电机 复合凸出结构 绝缘 空载速度 

分 类 号：TM359.9[电气工程—电机]