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1. 发明申请

WO2003067746A1 PIEZOELECTRIC MOTOR CONTROL 审中-公开
标题翻译：压电电机控制
公开(公告)号：WO2003067746A1
公开(公告)日：2003-08-14
申请号：PCT/US2003/003707
申请日：2003-02-06
申请人： ELLIPTEC RESONANT ACTUATOR AKTIENGESELLSCHAFT , VARADI, Peter, C. , MAGNUSSEN, Bjorn, B. , SCHULER, Dieter, A.
发明人： VARADI, Peter, C. , MAGNUSSEN, Bjorn, B. , SCHULER, Dieter, A.
IPC分类号： H02N2/00
CPC分类号： H02N2/008 , H02N2/103
摘要： A piezoelectric system has a piezoelectric motor (20) driving a driven element (22) so as to move the driven element 822) in response to an electric signal (25). The motor (20) has at least a first optimal operating frequency at which the motor (20) moves the driven element (22) an amount that meets predetermined criteria. The motor (20) and driven element (22) have a desired performance criteria when operated at that first operating frequency. A plurality of concatenated sinusoidal sweeping frequencies are repeatedly supplied to the piezoelectric motor (20) with at least one of the sweeping frequencies being sufficiently close to the first operating frequency to cause detectable motion of the driven element ( 22). The frequencies are varied in response to movement of at least one of the motor (20) and the driven element (22) to produce an average performance of the motor (20) and driven element (22) for a time corresponding to the time for one sweep of frequencies. The average performance is greater than an actual performance of the driven element (22) for the same period of time but when the actual performance is less than the desired performance.
摘要翻译：压电系统具有响应于电信号（25）驱动从动元件（22）以便使被驱动元件822移动的压电马达（20）。电动机（20）具有至少第一最佳工作频率，电动机（20）使驱动元件（22）移动达到预定标准的量。当在该第一工作频率下操作时，电机（20）和从动元件（22）具有期望的性能标准。将多个连续的正弦扫描频率重复地提供给压电马达（20），其中至少一个扫频频率足够接近于第一操作频率，以引起从动元件（22）的可检测的运动。频率响应于电动机（20）和从动元件（22）中的至少一个的运动而变化，以产生电动机（20）和从动元件（22）的平均性能一段时间一次扫频。在相同的时间段内，平均性能大于从动元件（22）的实际性能，但是当实际性能低于期望的性能时。

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