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

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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