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    • 79. 发明授权
    • Speed control system for electric motor
    • 电动机速度控制系统
    • US4736142A
    • 1988-04-05
    • US70168
    • 1987-07-01
    • John W. Waymire
    • John W. Waymire
    • H02P7/285H02P7/288H02P7/26
    • H02P7/2855H02P7/2885Y10S388/918Y10S388/919
    • A speed-control system for an electric motor comprises a circuit for setting a desired motor speed and providing a speed-control signal, a circuit for sensing motor voltage and providing a motor voltage-related signal, a circuit for sensing current flow in the motor and providing a motor current-related signal, a summing point for combining the sensed current and sensed voltage-related signals to provide a motor speed-related signal, and a triggerable switch for combining the motor speed-related signal and the speed-control signal to provide an error signal for controlling the motor speed.
    • 一种用于电动机的速度控制系统包括用于设定所需电动机速度并提供速度控制信号的电路,用于感测电动机电压并提供电动机电压相关信号的电路,用于感测电动机中的电流的电路 以及提供电动机电流相关信号,用于组合所感测的电流和检测的电压相关信号的求和点以提供电动机速度相关信号,以及用于组合电动机速度相关信号和速度控制信号的可触发开关 以提供用于控制电动机速度的误差信号。