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    Fault detection apparatus of direct-current motor drive bridge circuit
    1.
    发明授权
    Fault detection apparatus of direct-current motor drive bridge circuit 失效
    直流电机驱动桥电路故障检测装置

    公开(公告)号：US07068062B2

    公开(公告)日：2006-06-27

    申请号：US10639933

    申请日：2003-08-13

    申请人： Susumu Kitagawa ,  Yutaka Negishi ,  Takahiro Kasuga ,  Takuya Narasaki

    发明人： Susumu Kitagawa ,  Yutaka Negishi ,  Takahiro Kasuga ,  Takuya Narasaki

    IPC分类号： G01R31/34

    CPC分类号： H02M7/5387 ,  B62D5/0481

    摘要： In a direct current motor drive bridge circuit structured such that a pair of forward rotation switching elements and a pair of reverse rotation switching elements are alternately connected annularly, a direct-current motor is interposed between diagonal node points on one side, and a power source voltage is applied to a portion between diagonal node points on another side via an existing resistance. A fault detection apparatus of the direct-current motor drive bridge circuit is provided with a fault detection circuit for detecting an electric potential of the one node point r to which the power source voltage is applied via the existing resistance and for detecting a closed-circuit fault of the switching elements and on the basis of a fluctuation of the electric potential.

    摘要翻译： 在直流电动机驱动桥式电路中，使一对正转开关元件和一对反转开关元件环状地交替连接，直流电动机插入在一侧的对角线节点与电源 经由现有电阻将电压施加到另一侧的对角节点之间的部分。 直流电动机驱动桥电路的故障检测装置设置有故障检测电路，用于经由现有电阻检测施加了电源电压的一个节点点r的电位，并且用于检测闭路电路 开关元件的故障并基于电位的波动。