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    Position feedback control system for a numerically controlled machine tool
    1.
    发明授权
    Position feedback control system for a numerically controlled machine tool 失效
    位置反馈控制系统，用于数控机床

    公开(公告)号：US4272818A

    公开(公告)日：1981-06-09

    申请号：US59015

    申请日：1979-07-19

    Applicant: George H. McDaniel

    Inventor： George H. McDaniel

    IPC: G05D3/12 ,  G05B19/35 ,  G05B1/03 ,  G05B19/19

    CPC classification number: G05B19/351 ,  G05B2219/41461

    Abstract: A feedback position control system and method of extracting feedback phase or position information therefrom. A resolver or similar device such as an inductosyn is connected to each movable member of a machine tool such that the phase of the resolver output signal is indicative of the displacement of each movable member about its respective axis. The stator windings of the resolver are excited with reference and quadrature signals to generate a periodically varying output signal. The zero crossings of the output signal are monitored and the digital count in a reference counter (C.sub.A and C.sub.B) corresponding to the times of zero crossing are stored. The scaled sum of the counts C.sub.A and C.sub.B is determinative of the phase of the output signal relative to the reference signal.

    Abstract translation: 一种反馈位置控制系统和从其提取反馈相位或位置信息的方法。 旋转变压器或诸如感应器的类似装置连接到机床的每个可移动构件，使得分解器输出信号的相位指示每个可移动构件绕其相应轴线的位移。 旋转变压器的定子绕组用参考和正交信号激励，以产生周期性变化的输出信号。 监视输出信号的过零点，并存储与过零时间对应的参考计数器（CA和CB）中的数字计数。 计数CA和CB的缩放和决定了输出信号相对于参考信号的相位。

    Positioning control system for a machine that performs work on a moving part
    2.
    发明授权
    Positioning control system for a machine that performs work on a moving part 失效
    一个运动部件执行机器的定位控制系统

    公开(公告)号：US3686556A

    公开(公告)日：1972-08-22

    申请号：US3686556D

    申请日：1971-05-24

    Applicant: SQUARE D CO

    Inventor： ANGER ERNEST G ,  RICHARDS GILES J ,  BLOODGOOD JOHN F ,  GEIGER ROY J

    IPC: G05B19/418 ,  G05B19/425 ,  G05B11/18

    CPC classification number: G05B19/425 ,  G05B19/41815 ,  G05B2219/35286 ,  G05B2219/41461 ,  G05B2219/43008 ,  G05B2219/45051 ,  G05B2219/45213 ,  G05B2219/50048 ,  G05B2219/50084 ,  Y02P90/08

    Abstract: A programmable and manually operable control system for controlling the position of a machine relative to a workpiece so the machine may perform work at various locations on the workpiece while the workpiece is moved by the conveyor. The system includes a pair of synchro resolvers which provide output signals indicative of the position of the machine relative to a datum position and a pair of synchro resolvers which provide output signals indicative of the position of the conveyor relative to the datum position. The outputs of the machine indicating resolvers provide the inputs to the conveyor indicating resolvers and the outputs of the conveyor indicating resolvers are compared with command signals that are generated by a continuously recycling counter which has been preset by signals from a memory so the displacement between selected locations on the workpiece and the machine is electrically measured without using differential mechanical gearing. The control system is arranged so the machine will move synchronously with the workpiece, independently of the workpiece, and synchronously with the workpiece while the machine is moving from one preprogrammed location to a new preprogrammed location on the workpiece.

    Abstract translation: 一种用于控制机器相对于工件的位置的可编程和可手动操作的控制系统，使得当工件被输送机移动时，机器可以在工件上的各个位置执行工作。 该系统包括一对同步解析器，其提供指示机器相对于基准位置的位置的输出信号和一对同步分解器，其提供指示输送机相对于基准位置的位置的输出信号。 机器指示分解器的输出向输送机提供指示分解器的输入，并且将指示分解器的输送机的输出与由已经由存储器的信号预先设定的连续再循环计数器产生的命令信号进行比较， 工件和机器上的位置是电测量的，而不使用差速机械传动装置。 控制系统布置成使机器与工件同步移动，与工件无缝运动，同时机器从工件上的一个预编程位置移动到新的预编程位置。

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