电机与控制应用2024，Vol.51Issue(8)：76-84,9.DOI:10.12177/emca.2024.079
基于等效电路模型的超声波电机串联谐振频率识别方法
A Series Resonant Frequency Identification Method for Ultrasonic Motors Based on Equivalent Circuit Model
摘要
Abstract
During the operation of ultrasonic motors,the series resonant frequency of the motor may drift due to factors such as load and temperature rise.In order to achieve precise control of the motor,it is necessary to accurately identify and track the series resonant frequency of the motor.A series resonant frequency identification method for ultrasonic motors based on Butterworth-Van Dyke(BVD)equivalent circuit model of the motor is proposed.The driving voltage and current of the motor are used as feedback signals,which are then processed to obtain a differential voltage.The phase difference between the driving voltage and the differential voltage is compared.And the relationship between the phase difference and the series resonant frequency is analyzed.A circuit implementation scheme is designed and a physical circuit is manufactured.The series resonant frequency of the prototype motor is then identified with the proposed method.Moreover,the series resonant frequency of the motor is also measured with impedance analyzer.The result shows that the frequency identified with the proposed method is in good agreement with the measured one,which verifies the accuracy of the proposed series resonant frequency identification method for ultrasonic motors.关键词
超声波电机/串联谐振频率/等效电路/频率识别Key words
ultrasonic motor/series resonant frequency/equivalent circuit/frequency identification分类
信息技术与安全科学引用本文复制引用
蒋春容,徐耀耀,成苏南,濮阳鹏昊..基于等效电路模型的超声波电机串联谐振频率识别方法[J].电机与控制应用,2024,51(8):76-84,9.基金项目
国家自然科学基金项目(51777029) （51777029）
南京工程学院校级科研基金项目(CKJB202103)National Natural Science Foundation of China(51777029) （CKJB202103）
Scientific Research Fund of Nanjing Institute of Technology(CKJB202103) （CKJB202103）
