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    • 2. 发明申请
    • VALVE GRADUALLY COMMUNICATING A PRESSURE SIGNAL
    • VALVE GRADUALLY COMMUNICATIONING A PRESSURE SIGNAL
    • US20060243129A1
    • 2006-11-02
    • US11117384
    • 2005-04-29
    • Pengfei MaJiao ZhangJeff KuehnKalpesh Patel
    • Pengfei MaJiao ZhangJeff KuehnKalpesh Patel
    • F15B13/04
    • F15B11/006F15B11/05F15B2211/20546F15B2211/30535F15B2211/30575F15B2211/6054F15B2211/7053Y10T137/8667
    • A valve is provided for a hydraulic system having a source of pressurized fluid, a fluid actuator, and a proportional pressure compensating valve. The valve has a bore in fluid communication with the source and the fluid actuator. The valve also has a valve element disposed in the bore and movable between a flow blocking position and a flow passing position to selectively fluidly communicate the source with the fluid actuator. The valve also has a valve signal passageway disposed within the valve element and configured to be in fluid communication with a pressurized fluid having a signal pressure indicative of pressure supplied to the fluid actuator. The valve further has first and second orifices disposed within the valve element in fluid communication with the valve signal passageway and the bore. The valve signal passageway is configured to communicate the signal pressure with the first and second orifices. Movement of the valve element from the flow blocking position to the flow passing position fluidly communicates the first orifice with a system signal passageway before the second orifice, and fluidly communicates both the first and second orifices with the system signal passageway when the valve element is in the flow passing position.
    • 为具有加压流体源的液压系统,流体致动器和比例压力补偿阀提供阀。 阀具有与源和流体致动器流体连通的孔。 阀还具有设置在孔中的阀元件,并且可在阻流位置和流动通过位置之间移动,以选择性地将源与流体致动器流体连通。 阀还具有设置在阀元件内的阀信号通道,并被构造成与加压流体流体连通,该加压流体具有指示供应给流体致动器的压力的信号压力。 阀还具有设置在阀元件内的与阀信号通道和孔流体连通的第一和第二孔。 阀信号通道被配置为将信号压力与第一和第二孔相通。 阀元件从流动阻挡位置到流通位置的移动使第一孔口与第二孔口之前的系统信号通道流体连通,并且当阀门元件处于第二孔口时,将第一和第二孔口与系统信号通道流体连通 流通位置。
    • 3. 发明申请
    • Electrohydraulic control system
    • 电液控制系统
    • US20060095163A1
    • 2006-05-04
    • US10975984
    • 2004-10-29
    • Jerry WearHongliu DuGreg FerkolMark VonderwellJeff KuehnJason Brinkman
    • Jerry WearHongliu DuGreg FerkolMark VonderwellJeff KuehnJason Brinkman
    • G05D7/00
    • G05D16/2073
    • Consistent with an aspect of the disclosure, a method for controlling a hydraulic cylinder is provided. The hydraulic cylinder is provided with a chamber and configured to receive fluid from a valve. The method includes receiving a user input and determining a desired velocity of the hydraulic cylinder in accordance with the user input. In addition, the velocity of the hydraulic cylinder is measured and a position of the valve is determined in accordance with the desired velocity of the hydraulic cylinder and the measured velocity of the hydraulic cylinder. The method further includes determining a desired force to be applied to the valve in accordance with a difference between the desired and measured velocities of the hydraulic cylinder, and actuating the valve in accordance with the desired force to thereby inject the fluid into the chamber and move the hydraulic cylinder.
    • 根据本公开的一个方面,提供了一种用于控制液压缸的方法。 液压缸设置有腔室并构造成从阀接收流体。 该方法包括根据用户输入接收用户输入并确定液压缸的期望速度。 此外,测量液压缸的速度,并且根据液压缸的期望速度和液压缸的测量速度来确定阀的位置。 该方法还包括根据液压缸的期望速度和测量速度之间的差异来确定要施加到阀的期望力,并根据期望的力致动阀,从而将流体注入到腔室中并且移动 液压缸。