摘要
对基于面内振动的直线超声电机运动特性进行研究,简述了电机工作原理及定子椭圆运动产生条件,分析了电机运转时动子与定子的接触状态。结合定子周期性伸缩振动,以等速点(定子与动子速度相等时刻点)和临界接触点为分割点,研究了一个激励信号周期内动子的速度变化趋势,建立了稳态下动子的速度模型和位移模型。基于所建模型,借助仿真手段研究了动、定子装配间距与动子速度之间的关系。结果表明,在保证电机正常工作的前提下,动子运动速度与动、定子间装配间距近似线性关系。
The motion characteristics of linear ultrasonic motor based on in-plane vibration were studied. The working principle of the motor and the conditions of the elliptical motion of the stator were briefly described. The contact state between the mover and the stator at the operation of the motor was analyzed. Combined with the periodic stretching vibration of the stator, the velocity variation trend of the mover in a period of the excitation signal was studied by takingthe equal-velocity point （the moment at which the speeds of the stator and the mover are the same） the critical contact point as the segmentation point. Thevelocity model and displacement model of the mover at the steady state were established. Based on the established model, the relationship between the assembly clearance of mover and stator and the velocity of the stator was studied by means of simulation.The results showed that, on the premise of ensuring the normal operation of the motor, there was an approximate linear relationship between the motion speed of the mover and the assembly clearance between the mover and the stator.
作者
李慧鹏
孙业飞
唐若祥
吕亚宁
刘缤艳
LI Huipeng;SUN Yefei;TANG Ruoxiang;LYU Yaning;LIU Binyan(Institute of Photoelectric Technology,Beihang University,Beijing 100191,China)
出处
《压电与声光》
CAS
CSCD
北大核心
2018年第3期344-348,共5页
Piezoelectrics & Acoustooptics
基金
国家重大科学仪器设备开发专项基金资助项目(2013YQ050791)
关键词
直线超声电机
运动特性
装配间距
速度模型
位移模型
linear ultrasonic motor
motion characteristic
assembling clearance
velocity model
displacement model
作者简介
李慧鹏（1975-）,男,内蒙古赤峰人,副教授,博士,主要从事传感器技术、光电测试技术的研究.
