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    Switch machine controller with fail safe mechanism
    1.
    发明授权
    Switch machine controller with fail safe mechanism 失效
    具有故障安全机制的开关机控制器

    公开(公告)号：US5504405A

    公开(公告)日：1996-04-02

    申请号：US293155

    申请日：1994-08-19

    申请人： Mark Hager

    发明人： Mark Hager

    IPC分类号： B61L5/06 ,  H02H7/08 ,  H02P29/02 ,  H01R39/46

    CPC分类号： H02P29/02 ,  B61L5/062 ,  H02H7/0844

    摘要： A switch machine controller for providing fail safe control of a switch machine, having a motor for actuating the movements of a railroad switch, said motor being a brushless D.C. motor having a permanent magnet structure and a plurality of independent field coils. The controller has control circuitry for energizing and de-energizing field coils of said motor sequentially as the armature rotates. Further the controller, including a motor driver arrangement for switching a first service of power sequentially to said field coil of said motor, switches machine control lines connected to second source of power. Also, an amplifier for controlling timing signals which, in turn, controls the motor driver, thus receiving its power only from said switch machine control lines, and can only generate the proper sequence of signals when the control lines are energized, such that the motor can only run when the control lines are energized.

    摘要翻译： 一种用于提供开关机的故障安全控制的开关机控制器，具有用于致动铁路开关的运动的电动机，所述电动机是具有永磁体结构的无刷直流电动机和多个独立的励磁线圈。 该控制器具有控制电路，用于在电枢旋转时依次对所述电动机的励磁线圈通电和断电。 此外，包括用于将功率的第一服务顺序地切换到所述电动机的所述励磁线圈的电动机驱动器装置的控制器切换连接到第二电源的机器控制线。 另外，用于控制定时信号的放大器，其继而控制电动机驱动器，从而仅从所述开关机控制线接收其功率，并且在控制线通电时只能产生正确的信号序列，使得电动机 只能在控制线通电时运行。