发明申请
US20140062346A1 SWITCHED CAPACITOR CHARGE PUMP DRIVER FOR PIEZOELECTRIC ACTUATOR
有权
用于压电致动器的开关电容器充电泵驱动器
- 专利标题: SWITCHED CAPACITOR CHARGE PUMP DRIVER FOR PIEZOELECTRIC ACTUATOR
- 专利标题(中): 用于压电致动器的开关电容器充电泵驱动器
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申请号: US13145397申请日: 2011-05-03
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公开(公告)号: US20140062346A1公开(公告)日: 2014-03-06
- 发明人: Zhihua Feng , Yuting Ma , Liang Huang , Yongbin Liu , Weiwei Shao
- 申请人: Zhihua Feng , Yuting Ma , Liang Huang , Yongbin Liu , Weiwei Shao
- 申请人地址: CN Hefei, Anhui
- 专利权人: University of Science and Technology of China
- 当前专利权人: University of Science and Technology of China
- 当前专利权人地址: CN Hefei, Anhui
- 国际申请: PCT/CN11/73617 WO 20110503
- 主分类号: H02N2/00
- IPC分类号: H02N2/00
摘要:
A switched capacitor charge pump driver for piezoelectric actuator includes a power source, a first switching capacitor and a piezoelectric actuating circuit, wherein during being at a first state, the first capacitor is charged by the power source; during being at a second state, the first capacitor is discharged to the piezoelectric actuator in the actuating circuit. The switched capacitor charge pump driver for piezoelectric actuator can expand the application of charge controller to a broader frequency range, especially at low frequencies and effectively decrease the hysteresis of piezoelectric stack over a large frequency range even at a quasistatic state. In addition, a method for driving piezoelectric actuator by a switched capacitor charge pump is provided.