发明授权
- 专利标题: Controller and controlling method for piezoelectric actuator
- 专利标题(中): 压电执行器的控制器和控制方法
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申请号: US725679申请日: 1996-10-02
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公开(公告)号: US5796206A公开(公告)日: 1998-08-18
- 发明人: Mitsuru Asai , Nobuo Kamiya , Tomoji Ishikawa , Chihiro Nishikawa
- 申请人: Mitsuru Asai , Nobuo Kamiya , Tomoji Ishikawa , Chihiro Nishikawa
- 申请人地址: JPX Aichi-ken JPX Toyota
- 专利权人: Kabushiki Kaisha Toyota Chuo Kenkyusho,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Kabushiki Kaisha Toyota Chuo Kenkyusho,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JPX Aichi-ken JPX Toyota
- 优先权: JPX7-258636 19951005
- 主分类号: B23Q5/28
- IPC分类号: B23Q5/28 ; H01L41/04 ; H01L41/09 ; H02N2/00 ; H02N2/06 ; H01L41/08
摘要:
A method for controlling a piezoelectric actuator includes: a safety range setting process in which a safety range V.sub.range1 or V.sub.range2 of an applied voltage is set so that an area of 180.degree. domain rotation is within one third or less of an area of full 180.degree. domain rotation S.sub.1 or S.sub.2 in a positive or negative region of the applied voltage; and a driving process in which the voltage is applied to the piezoelectric actuator with a limitation of the safety range V.sub.range1 or V.sub.range2. A controller which drives a piezoelectric actuator according to the controlling method is also provided. A temperature compensation is applied if necessary. The 180.degree. domain rotation is limited by the lower or upper limit of the safety range, so that local concentration of inner stress is suppressed and the actuator is driven at its maximum ability without cracks or splits.
公开/授权文献
- US5243456A Semiconductor device 公开/授权日:1993-09-07