发明授权
- 专利标题: Method for controlling an ultrasound motor and corresponding control arrangement
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申请号: US15557642申请日: 2016-03-31
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公开(公告)号: US10312831B2公开(公告)日: 2019-06-04
- 发明人: Wladimir Wischnewskiy , Alexej Wischnewski
- 申请人: Physik Instrumente (PI) GmbH & Co. KG
- 申请人地址: DE Karlsruhe
- 专利权人: Physik Instrumente (PI) GMBH & Co. KG
- 当前专利权人: Physik Instrumente (PI) GMBH & Co. KG
- 当前专利权人地址: DE Karlsruhe
- 代理机构: The Juhasz Law Firm
- 优先权: DE102015004208 20150331
- 国际申请: PCT/EP2016/000538 WO 20160331
- 国际公布: WO2016/155882 WO 20161006
- 主分类号: H02N2/00
- IPC分类号: H02N2/00 ; H02N2/06 ; H02N2/14 ; B06B1/06
摘要:
A method for controlling an ultrasonic motor. From a starting velocity or starting position of the driven element, the method includes adjusting the frequency of the electrical excitation voltage such that it is equal to or close to the mechanical resonance frequency of the ultrasonic actuator; changing the frequency of the electrical excitation voltage using the signal of the velocity sensor or the position sensor towards the anti-resonance frequency of the ultrasonic actuator until an end velocity or an end position of the driven element is reached; and controlling the end velocity or position of the driven element with a predetermined accuracy by means of antiphase frequency change. Also disclosed is a corresponding control arrangement for an ultrasonic motor having an ultrasonic actuator with at least two acoustic wave generators, a driven element and a generator via a frequency adjustment.
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