基于空间调相的环形行波超声波电机的幅相控制

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摘要介绍了一种采用空间移相代替时间移相, 实现电机调速控制的新型空间调相环形行波超声波电机。设计了新型压电陶瓷极化分区方案, 利用四个电源在超声波电机定子上激励出四个驻波, 四个驻波两两具有相同幅值或相同时间相位；根据波形叠加原理, 具有相同时间相位的驻波叠加成一个新的合成驻波, 通过改变两个原始驻波的幅值关系使合成驻波在空间的位置发生改变, 进而达到空间移相的目的；研究了电源幅值和空间相位角的关系, 推导了新型超声波电机的波形及速度表达式；在研究了新型超声波电机的幅值控制和相位控制的基础上, 设计了空间调相环形行波超声波电机的的幅相控制方案。仿真及实验结果验证了理论分析。

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	陆旦宏
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关键词 ：超声波电机, 空间相位, 幅相控制

Abstract：A novel ring-type travelling-wave ultrasonic motor based on space phase modulation is introduced, and the motor speed is controlled by space phase instead of the time phase. New piezoelectric ceramic electrode configuration is designed, and four stator standing waves are produced. Every two of them are same as the vibration amplitude or same as the time phase. Based on the principle of waveform superposition, a new standing wave is composed by two standing waves who are the same as time phase, and the space position of composite standing wave would be changed when the vibration amplitudes of two standing waves are changed. Then space phase of ultrasonic motor is controlled. Relationship between power and space phase is studied, waveform and speed function of the novel motor are deduced. With the study of amplitude control and phase control, the phase-amplitude control of novel ultrasonic motor is developed. Simulation and experiment results confirm the theory analysis.

Key words： Ultrasonic motor space phase amplitude-phase control

收稿日期: 2013-08-22 出版日期: 2014-06-17

PACS:

TM356

基金资助:国家自然科学基金资助项目(51077011, 51177014)

作者简介: 陆旦宏, 男, 1978年生, 博士研究生, 副教授, 主要从事超声波电机设计和控制方面的研究; 胡敏强, 男, 1961年生, 教授, 博士生导师, 主要从事工程电磁场理论及数值计算方法, 电机运行理论和状态智能监测技术, 微特电机及其控制等方面的研究。

引用本文:

陆旦宏, 胡敏强, 金龙, 徐志科, 张仰飞. 基于空间调相的环形行波超声波电机的幅相控制[J]. 电工技术学报, 2014, 29(3): 132-142. Lu Danhong, Hu Minqiang, Jin Long, Xu Zhike, Zhang Yangfei. Amplitude-Phase Control of Ring-Type Travelling-Wave Ultrasonic Motors Based on Space Phase Modulation. Transactions of China Electrotechnical Society, 2014, 29(3): 132-142.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I3/132

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