发明授权
- 专利标题： Drive control device for ultrasonic motors
- 专利标题（中）： 超声波电机驱动控制装置
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申请号： US845205申请日： 1997-04-21
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公开(公告)号： US5939847A公开(公告)日： 1999-08-17
- 发明人: Takatoshi Ashizawa , Tadao Takagi
- 申请人： Takatoshi Ashizawa , Tadao Takagi
- 申请人地址： JPX Tokyo
- 专利权人： Nikon Corporation
- 当前专利权人： Nikon Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-233092 19920807; JPX5-063441 19930226; JPX5-202562 19930723
- 主分类号： H01L41/04
- IPC分类号： H01L41/04 ; H02N2/16 ; H01L41/08
摘要：
A drive control device for ultrasonic motors (actuators), including a driving unit for driving the ultrasonic motors, a detecting device for detecting the characteristics of each of two ultrasonic motors and generating a signal indicating the difference in the characteristics, and an output difference controlling unit for controlling the driving unit based on the signal from the detecting device, thereby regulating the difference in the outputs of the two ultrasonic motors.
公开/授权文献
- US5230746A Photovoltaic device having enhanced rear reflecting contact 公开/授权日：1993-07-27
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