Variable displacement piezo-electric pumps
    1.
    发明授权
    Variable displacement piezo-electric pumps 失效
    可变排量压电泵

    公开(公告)号:US08057198B2

    公开(公告)日:2011-11-15

    申请号:US11950787

    申请日:2007-12-05

    IPC分类号: F04B17/00

    CPC分类号: F04B17/003 F04B43/02

    摘要: A variable displacement piezo-electric pump which includes a pump housing having a side housing wall defining a pump chamber, an inlet line and an outlet line communicating with the pump chamber, a flexible pump diaphragm spanning the side housing wall in the pump chamber, a diaphragm-stroking mechanism such as a piezo-electric stack engaging the pump diaphragm and a diaphragm support provided between the diaphragm-stroking mechanism and the side housing wall of the pump housing.

    摘要翻译: 一种可变排量压电泵,其包括具有限定泵室的侧壳体壁的泵壳体,与泵室连通的入口管线和出口管线,跨越泵室中的侧壳体壁的柔性泵隔膜, 诸如与泵隔膜接合的压电叠层的隔膜调节机构和设置在隔膜冲击机构和泵壳体的侧壳体壁之间的隔膜支架。

    Method for controlling a hydraulic valve of an automatic transmission
    3.
    发明授权
    Method for controlling a hydraulic valve of an automatic transmission 有权
    用于控制自动变速器的液压阀的方法

    公开(公告)号:US6138810A

    公开(公告)日:2000-10-31

    申请号:US368218

    申请日:1999-08-04

    摘要: A method for controlling operation of a hydraulic valve having a magnet fixed to a displaceable spool, a sensor producing a signal responsive to the sensed intensity of a field produced by the magnet representing the position of the spool in the valve spool, the method comprising producing from the signal a time series record of the position of the spool; determining the desired position of the spool, producing a error signal from the difference between actual and desired spool position, determining a compensated correction error, producing a commanded control pressure signal to change the magnitude of control pressure supplied to the valve, and changing the position of the spool in response to the control pressure signal.

    摘要翻译: 一种用于控制具有固定到可位移阀芯的磁体的液压阀的操作的方法,传感器产生响应于表示阀芯在阀芯中的位置的由磁体产生的磁场的感测强度的信号,该方法包括: 从信号的时间序列记录阀芯的位置; 确定阀芯的期望位置,根据实际和期望的阀芯位置之间的差产生误差信号,确定经补偿的校正误差,产生指令的控制压力信号以改变提供给阀的控制压力的大小,以及改变位置 的阀芯响应于控制压力信号。