发明申请
US20090223490A1 Method For Controlling A Piezoelectric Actuator And Control Unit For Controlling A Piezoelectric Actuator 有权
用于控制压电致动器的方法和用于控制压电致动器的控制单元

  • 专利标题: Method For Controlling A Piezoelectric Actuator And Control Unit For Controlling A Piezoelectric Actuator
  • 专利标题(中): 用于控制压电致动器的方法和用于控制压电致动器的控制单元
  • 申请号: US11721013
    申请日: 2005-11-25
  • 公开(公告)号: US20090223490A1
    公开(公告)日: 2009-09-10
  • 发明人: Richard PirklHarald SchmidtHans-Jörg Wiehoff
  • 申请人: Richard PirklHarald SchmidtHans-Jörg Wiehoff
  • 优先权: DE102004058971.2 20041208
  • 国际申请: PCT/EP05/12642 WO 20051125
  • 主分类号: F02M51/00
  • IPC分类号: F02M51/00 H01L41/09
Method For Controlling A Piezoelectric Actuator And Control Unit For Controlling A Piezoelectric Actuator
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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