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    • 10. 发明授权
    • Control system for hydrostatic power transmission
    • 静压力传动控制系统
    • US4528813A
    • 1985-07-16
    • US290110
    • 1981-08-05
    • Eiki IzumiHiroshi WatanabeYukio AoyagiKazuo HonmaKichio Nakajima
    • Eiki IzumiHiroshi WatanabeYukio AoyagiKazuo HonmaKichio Nakajima
    • G05D16/00F16H61/40F16H61/431F16H39/46
    • F16H61/431F16H2059/683F16H2059/6853F16H2059/6861
    • A control system for a hydrostatic power transmission having a variable displacement hydraulic pump (2) and a hydraulic actuator (3) connected in a closed or semi-closed circuit, wherein the displacement of the pump or the delivery thereby is adjustable in accordance with a manipulated variable of an operating lever (13). A control unit of the system (16) is operative to calculate a hydraulic pump displacement command (X) on the basis of a manipulated variable signal (X.sub.L) and circuit pressure signals (Pa, Pb) in such a manner that when the delivery side circuit pressure is higher than the suction side circuit pressure, the displacement is controlled to change in accordance with the manipulated variable while the rate of change in the displacement is controlled to change a maximum rate when the circuit pressure on the delivery side is below a pressure value that varies in dependence on the manipulated variable and is reduced once it is reached, while pump displacement is changed in response to the suction side circuit pressure, when it is higher than the delivery side pressure, in a similar manner except that a constant value is used instead of a value which varies in dependence on the manipulated variable.
    • 一种用于静液压动力传动的控制系统,其具有连接在闭合或半闭合回路中的可变排量液压泵(2)和液压致动器(3),其中泵或其输送的位移可根据 操作杆(13)的操纵变量。 系统(16)的控制单元可操作以基于操纵可变信号(XL)和电路压力信号(Pa,Pb)计算液压泵排量指令(X),使得当输送侧 回路压力高于吸入侧回路压力,根据操作变量控制位移变化,同时当输送侧的回路压力低于压力时控制位移变化率以改变最大速率 值根据操作变量而变化,并且一旦达到就减小,而泵位移响应于吸入侧回路压力而变化,当其高于输送侧压力时,除了使用恒定值 而不是根据操纵变量而变化的值。