发明授权
US07617813B2 Method for controlling a piezoelectric actuator and control unit for controlling a piezoelectric actuator
有权
用于控制用于控制压电致动器的压电致动器和控制单元的方法
- 专利标题: Method for controlling a piezoelectric actuator and control unit for controlling a piezoelectric actuator
- 专利标题(中): 用于控制用于控制压电致动器的压电致动器和控制单元的方法
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申请号: US11721013申请日: 2005-11-25
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公开(公告)号: US07617813B2公开(公告)日: 2009-11-17
- 发明人: Richard Pirkl , Harald Schmidt , Hans-Jörg Wiehoff
- 申请人: Richard Pirkl , Harald Schmidt , Hans-Jörg Wiehoff
- 申请人地址: DE Munich
- 专利权人: Siemens Aktiengesellschaft
- 当前专利权人: Siemens Aktiengesellschaft
- 当前专利权人地址: DE Munich
- 代理机构: King & Spalding L.L.P.
- 优先权: DE102004058971 20041208
- 国际申请: PCT/EP2005/012642 WO 20051125
- 国际公布: WO2006/061113 WO 20060615
- 主分类号: F02M51/00
- IPC分类号: F02M51/00
摘要:
A method for controlling a piezoelectric actuator which displaces a control element of an injection valve includes the step of charging the actuator until a start voltage is reached. Subsequently, the actuator is discharged until a partial lifting voltage, which is maintained during a holding time, is reached. In the final step, the actuator is discharged until an off-load voltage is reached and a parameter which is dependent on the partial lifting voltage is used as a control variable. A desired value for the control variable is determined and the actuator is controlled in such a manner that the desired value of the control variable is maintained.
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