Phase-control device for synchronous motors
    1.
    发明授权
    Phase-control device for synchronous motors 失效
    同步电机相控装置

    公开(公告)号:US4310787A

    公开(公告)日:1982-01-12

    申请号:US105974

    申请日:1979-12-21

    IPC分类号: H02P25/03 H03H11/20 H02P5/52

    摘要: A device for controlling the phase of an output pulse sequence relative to an input pulse train of the same frequency comprises a multiplier receiving the pulse train from a frequency generator and emitting to a divider a rectangular waveform having a frequency m times that of the pulse train. The divider is controlled by a comparator to divide the frequency of the rectangular waveform by a factor of m.div.1, m-1, or m, depending on whether the actual phase difference between the pulse train and the sequence is less than, greater than, or equal to a predetermined phase angle, the actual phase difference being communicated to the comparator by a counter registering during each cycle of the pulse train a number of pulses proportional to the phase difference. The divider may energize via a frequency converter a synchronous motor having a rotor connected to a disk whose rate of rotation is monitored by a pickup transmitting a pulse sequence to the counter for phase comparison with the input pulse train, whereby the position of the rotor and the disk upon each rotation may be precisely controlled. The angular position of the rotor and disk may be controlled relative to a second rotor of another synchronous motor, this motor being energized either directly by the frequency generator or indirectly via another multiplier, divider, comparator and counter.

    摘要翻译: 用于控制相对于相同频率的输入脉冲序列的输出脉冲序列的相位的装置包括:乘法器,接收来自频率发生器的脉冲序列,并向分频器发送频率为脉冲串数m倍的矩形波形 。 分频器由比较器控制,根据脉冲序列和序列之间的实际相位差是否小于,大于等于1的方式将矩形波形的频率除以m DIVIDED 1,m-1或m的因子 或等于预定的相位角,实际相位差通过计数器在脉冲序列的每个周期期间记录与比较器成比例的脉冲数来传送给比较器。 分压器可以通过变频器通电一个同步电动机,该同步电动机具有连接到盘的转子,其转速由通过脉冲序列传送到计数器的拾取器监测,用于与输入脉冲串进行相位比较,从而转子的位置和 可以精确地控制每次旋转时的盘。 转子和盘的角位置可以相对于另一同步电动机的第二转子来控制,该电动机直接由频率发生器或间接通过另一乘法器,分频器,比较器和计数器通电。

    System for determining the relative angular positions of the rotors of
two synchronously driven synchronous motors
    2.
    发明授权
    System for determining the relative angular positions of the rotors of two synchronously driven synchronous motors 失效
    用于确定两个同步驱动的同步电动机的转子的相对角位置的系统

    公开(公告)号:US4135118A

    公开(公告)日:1979-01-16

    申请号:US729877

    申请日:1976-10-05

    IPC分类号: G01D5/247 G01R31/34 G05B19/28

    摘要: A system for determining the relative angular positions of two magnetic-p rotors of respective synchronously driven (same speed) synchronous motors operated from a common frequency generator applying the driving frequency to the motors. Each rotor is provided with an optoelectronic device generating an electronic pulse for each revolution of the rotor. The pulse of one optoelectronic device is applied to the start input of a start-stop counter. The pulse from the other device is applied to the stop input of the counter and the pulse-counting input receives its signals from a frequency multiplier connected to the frequency generator.

    摘要翻译: 用于确定从共同频率发生器施加驱动频率到电动机的同步驱动(同速)同步电动机的两个磁极转子的相对角位置的系统。 每个转子都设有一个光电器件,为转子的每转一圈产生电子脉冲。 一个光电子器件的脉冲被施加到启动 - 停止计数器的起始输入。 来自另一装置的脉冲被施加到计数器的停止输入,并且脉冲计数输入从连接到频率发生器的倍频器接收其信号。

    Apparatus for controlling the rotors of synchronous motors
    3.
    发明授权
    Apparatus for controlling the rotors of synchronous motors 失效
    用于控制同步电动机转子的装置

    公开(公告)号:US4099103A

    公开(公告)日:1978-07-04

    申请号:US729875

    申请日:1976-10-05

    CPC分类号: H02P5/74 G01R31/343 H02P25/03

    摘要: A device for measuring the angular position of the rotor of a synchronous motor relative to the rotating field thereof wherein the synchronous motor is driven by a frequency generator. The synchronous motor has an optoelectronic device generating a pulse for each rotation of the rotor and applied to the stop input of a counter whose start input receives from a frequency divider connected to the frequency generator and having a dividing factor equal to the number of poles of the synchronous motor. A frequency multiplier is also connected to the frequency generator and the output of the multiplier is applied to the counting-pulse input of the counter. The count registered on the counter in the interval between start and stop pulses is thus proportional to the lag of the rotor behind the rotating field.

    摘要翻译: 一种用于测量同步电动机的转子相对于其旋转磁场的角位置的装置,其中同步电动机由频率发生器驱动。 同步电动机具有光电器件,其产生用于转子每次转动的脉冲,并施加到计数器的停止输入,其起始输入从连接到频率发生器的分频器接收,并且具有等于 同步电机。 倍频器也连接到频率发生器,并且乘法器的输出被施加到计数器的计数脉冲输入。 在开始和停止脉冲之间的间隔中登记在计数器上的计数因此与旋转场后转子的滞后成比例。