Method of controlling a piezoelectric actuator
    1.
    发明申请
    Method of controlling a piezoelectric actuator 有权
    控制压电致动器的方法

    公开(公告)号:US20070290573A1

    公开(公告)日:2007-12-20

    申请号:US11804923

    申请日:2007-05-21

    IPC分类号: H01L41/00

    摘要: A method for controlling the displacement of a stack of a piezoelectric actuator for use in a fuel injector comprises determining a desired amount of charge (ΔQ) to be added or removed from the stack. The method further comprises determining an operating parameter of the fuel system and selecting a drive current level (PO, SO) and a drive time (topen, tclose) in accordance with the desired amount of charge (ΔQ) and the operating parameter, and driving the drive current through the stack for the drive time (topen, tclose) in order to add or remove the desired amount of charge (ΔQ).

    摘要翻译: 用于控制用于燃料喷射器的压电致动器的堆叠的位移的方法包括确定要从堆叠中添加或移除的期望的电荷量(DeltaQ)。 该方法进一步包括确定燃料系统的运行参数,并依照下述方式选择驱动电流电平(PO,SO)和驱动时间(t开启,闭合) 具有期望的电荷量(DeltaQ)和操作参数,并且驱动驱动电流通过堆栈以驱动驱动时间(t开<! - SIPO - >关闭),以便 添加或删除所需的电荷量(DeltaQ)。

    Method of controlling a piezoelectric actuator
    2.
    发明授权
    Method of controlling a piezoelectric actuator 有权
    控制压电致动器的方法

    公开(公告)号:US07856964B2

    公开(公告)日:2010-12-28

    申请号:US11804923

    申请日:2007-05-21

    IPC分类号: F02M51/00

    摘要: A method for controlling the displacement of a stack of a piezoelectric actuator for use in a fuel injector comprises determining a desired amount of charge (ΔQ) to be added or removed from the stack. The method further comprises determining an operating parameter of the fuel system and selecting a drive current level (PO, SO) and a drive time (topen, tclose) in accordance with the desired amount of charge (ΔQ) and the operating parameter, and driving the drive current through the stack for the drive time (topen, tclose) in order to add or remove the desired amount of charge (ΔQ).

    摘要翻译: 用于控制用于燃料喷射器的压电致动器的堆叠的位移的方法包括确定要从堆叠中添加或移除的期望的电荷量(&Dgr; Q)。 该方法还包括根据期望的充电量(&Dgr; Q)和操作参数确定燃料系统的运行参数并选择驱动电流水平(PO,SO)和驱动时间(topen,tclose) 并驱动驱动电流通过堆栈驱动时间(topen,tclose),以便添加或删除所需的电荷量(&Dgr; Q)。