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    • 1. 发明申请
    • APPARATUS FOR CONTROLLING FORKLIFT
    • 控制叉车的装置
    • WO1985000147A1
    • 1985-01-17
    • PCT/JP1984000328
    • 1984-06-25
    • HITACHI, LTD.KIKUCHI, SeikiYAMAGUCHI, Kuniaki
    • HITACHI, LTD.
    • B60L03/00
    • H02P7/29
    • A travel DC motor (12) and a loading DC motor (18) are connected to a common battery power source (10). The motor (12) is supplied with current through a transistor chopper (28) whose on/off operation is controlled, and the motor (18) is supplied with current through a thyristor chopper (32). The transistor chopper (28) and the thyristor chopper (32) are repeatedly turned on and off in response to pulse signals P1, P2, P3 generated by chopper control circuits (30), (47). When the thyristor chopper (32) is on, the chopper control circuit (30) keeps the transistor chopper (28) off in response to an inhibition signal Va.
    • 行驶直流电动机(12)和负载直流电动机(18)连接到公共电池电源(10)。 电动机(12)通过晶体管斩波器(28)被供电,其晶体管截止器(28)的开/关操作被控制,电动机(18)通过晶闸管斩波器(32)供电。 根据由斩波控制电路(30),(47)产生的脉冲信号P1,P2,P3,晶体管截止器(28)和晶闸管斩波器(32)反复导通和截止。 当晶闸管斩波器(32)接通时,斩波控制电路(30)响应于抑制信号Va使晶体管斩波器(28)保持断开。