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    • 96. 发明申请
    • DIGITAL HYDRAULIC SYSTEM
    • 数字液压系统
    • US20090178399A1
    • 2009-07-16
    • US12352398
    • 2009-01-12
    • Elton D. Bishop
    • Elton D. Bishop
    • F15B1/027
    • F15B21/14F15B1/024F15B3/00F15B21/08F15B2211/212F15B2211/214F15B2211/88
    • A control system for a work machine having a hydraulic energy source, a hydraulic accumulator, a digital hydraulic system having a digital hydraulic transformer, a hydraulic actuator and a movable element. The hydraulic accumulator being fluidically couplable with the hydraulic energy source. The digital hydraulic system including a digital hydraulic transformer fluidically couplable with the hydraulic accumulator. The hydraulic actuator being fluidically couplable with the digital hydraulic transformer. The movable element being movable by the hydraulic actuator. The control system including means to estimate at least one of potential energy and kinetic energy in the movable element; means to measure a fill level of hydraulic fluid in the hydraulic accumulator; and means to vary the amount of hydraulic energy added to the hydraulic accumulator by the hydraulic energy source responsive to the potential energy, the kinetic energy and/or the fill level of the hydraulic accumulator.
    • 一种用于具有液压能量源的工作机械的控制系统,液压蓄能器,具有数字液压变压器的数字液压系统,液压致动器和可移动元件。 液压蓄能器与液压能源流体耦合。 数字液压系统包括与液压蓄能器流体耦合的数字液压变压器。 液压致动器与数字液压变压器流体耦合。 可移动元件可由液压致动器移动。 控制系统包括估计可移动元件中的势能和动能中的至少一个的装置; 用于测量液压蓄能器中液压油的填充量的装置; 以及响应于所述液压蓄能器的势能,动能和/或填充水平,通过液压能源改变添加到液压蓄能器的液压能量的装置。