基于相移PWM的两相行波超声波电机转速控制  

Speed Control of Two-phase Traveling Wave Ultrasonic Motor Based on Phase-shift PWM

作　　者：严浪涛 刘斌 张剑锋 黄三山 YAN Langtao;LIU Bin;ZHANG Jianfeng;HUANG Sanshan(School of Shipping and Naval Architecture,Chongqing Jiaotong University,Chongqing 400074,China;Tianjin Port Tugboat&Lighter Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]重庆交通大学航运与船舶工程学院,重庆400074 [2]天津港轮驳有限公司,天津300450

出　　处：《微电机》2022年第9期56-63,共8页Micromotors

基　　金：国家自然科学基金(61273137);重庆市教育委员会科学技术项目(KJQN201800721)。

摘　　要：鉴于超声波电机转子转速快速稳定的要求,结合两相行波超声波电机的固有特点,建立了相应的数学模型。并结合相移PWM的两相H桥控制电路,设计了基于双反馈的两相行波超声波电机转子转速稳定控制策略,实现了超声波电机转子转速快速稳定的功能。利用Matlab/Simulink仿真工具搭建了相应的仿真模块,对所设计的转速稳定策略进行了仿真分析与验证。仿真波形中各物理量的变化趋势满足实际物理量之间的数学关系,转子转速能在给定的阶跃扰动下快速稳定下来,从而证明了所建数学模型的正确性、转速稳定策略的有效性;为两相行波超声波电机的生产设计奠定了理论基础。The mathematical model of two-phase traveling wave ultrasonic motor was established based on the inherent characteristics of two-phase traveling wave ultrasonic motor,which met the requirements that the rotor speed can be quickly stabilized.The rotor speed stability control strategy of two-phase traveling wave ultrasonic motor based on double feedback was designed,combing with the two-phase H-bridge control circuit of phase-shift PWM,which made the function that the rotor speed can be quickly stabilized was realized.The corresponding simulation module was built by using simulation tool named Matlab/Simulink,and the designed speed stability strategy was simulated,analyzed and verified.The variation trend of each physical quantity in the simulation waveform is consistent with the mathematical relationship between the actual physical quantities,and the rotor speed can be quickly stabilized under the given step disturbance,which indicates that the mathematical model and the speed stabilization strategy are correct and effective.It lays a theoretical foundation for the production design of two-phase traveling wave ultrasonic motor.

关 键 词：超声波电机 转速控制 相移PWM 仿真 

分 类 号：TM359.9[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]