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5 条记录 (耗时 0.008 秒)

    Wide range, high accuracy, electronically programmed speed control system
    1.
    发明授权
    Wide range, high accuracy, electronically programmed speed control system 失效
    宽范围，高精度，电子编程速度控制系统

    公开(公告)号：US3974428A

    公开(公告)日：1976-08-10

    申请号：US470166

    申请日：1974-05-15

    申请人： Ralph S. Hafle

    发明人： Ralph S. Hafle

    IPC分类号： G02B23/16 ,  G05D13/62 ,  H02P7/288 ,  H02P23/00 ,  H02P5/32

    CPC分类号： H02P23/186 ,  Y10S388/902 ,  Y10S388/912

    摘要： The disclosed system utilizes digital electronic programming to establish the rotational or translational speed of a motor driven member. The desired speed can be selected by manipulating a set of digital switches. A stable oscillator is employed to generate a high frequency signal which is processed by frequency dividers to produce a modulaton frequency signal. The modulation frequency is supplied to an optical encoder having a rotary shaft adapted to be connected to a rotary member, the speed of which is to be controlled. The encoder is constructed and arranged to produce a phase variable output signal at the modulation frequency, the phase of such output signal being variable as a function of the shaft angle. The high frequency signal is also processed by digital circuits under the control of the digital selector switches to produce a variable reference frequency signal having a frequency corresponding to the modulation frequency plus or minus a number which is established by the setting of the selector switches. The speed control system includes means for comparing the frequency of the phase variable signal with the frequency of the reference signal. This comparison circuit controls a motor operating circuit which increases or decreases the speed of the drive motor for the rotary member, until the phase variable signal has the same frequency and phase as the reference signal. The digital generation of the reference frequency signal insures that its frequency is established and maintained with an extremely high degree of accuracy.

    摘要翻译： 所公开的系统利用数字电子程序来建立电动机驱动构件的旋转或平移速度。 可以通过操纵一组数字开关来选择所需的速度。 采用稳定的振荡器来产生由分频器处理以产生调制频率信号的高频信号。 调制频率被提供给具有旋转轴的光学编码器，旋转轴适于连接到旋转构件，其速度将被控制。 编码器被构造和布置成产生调制频率的相位可变输出信号，这种输出信号的相位可以作为轴角度的函数而变化。 高频信号也由数字电路在数字选择开关的控制下进行处理，以产生具有与调制频率相对应的频率的可变参考频率信号加上或减去由选择器开关的设置建立的数字。 速度控制系统包括用于将相位可变信号的频率与参考信号的频率进行比较的装置。 该比较电路控制电动机操作电路，其增加或减小用于旋转构件的驱动电动机的速度，直到相位可变信号具有与参考信号相同的频率和相位。 参考频率信号的数字生成确保其频率以非常高的精度建立和维持。

    Speed control circuit for a universal motor
    2.
    发明授权
    Speed control circuit for a universal motor 失效
    通用电机调速电路

    公开(公告)号：US5530325A

    公开(公告)日：1996-06-25

    申请号：US81385

    申请日：1993-06-24

    申请人： Hornung Friedrich ,  Heisler Matthias

    发明人： Hornung Friedrich ,  Heisler Matthias

    IPC分类号： H02P25/10 ,  H02P25/14 ,  H02P5/32

    CPC分类号： H02P25/145

    摘要： A control circuit is proposed, which can be used for the phase-shift control of an electric motor in an a.c. voltage supply line. The ground connector of the control circuit, together with the cathode of a semiconductor switch (triac), is directly connected with load current circuit. Because of this, it is possible to do without potential-separating means when it is intended to feed signals at the load current circuit directly into the control circuit. An auxiliary voltage source is connected between the synchronization input and the ground connector to maintain the function of the synchronization input.

    摘要翻译： PCT No.PCT / DE91 / 00897 Sec。 371日期：1993年6月24日 102（e）日期1993年6月24日PCT 1991年11月16日PCT PCT。 公开号WO92 / 11688 日期：1992年7月9日。提出了一种控制电路，可用于电动机的相移控制。 电源线。 控制电路的接地连接器与半导体开关（triac）的阴极一起直接与负载电流电路连接。 因此，当将负载电流电路中的信号直接馈送到控制电路时，可以不使用电位分离装置。 辅助电压源连接在同步输入和接地连接器之间，以保持同步输入的功能。

    Windshield wiper control apparatus
    4.
    发明授权
    Windshield wiper control apparatus 失效
    挡风玻璃刮水器控制装置

    公开(公告)号：US4463294A

    公开(公告)日：1984-07-31

    申请号：US478908

    申请日：1983-03-25

    申请人： Paul N. Gibson

    发明人： Paul N. Gibson

    IPC分类号： B60S1/08 ,  H02P5/32

    CPC分类号： B60S1/0837 ,  B60S1/0822 ,  Y10S388/902 ,  Y10S388/933

    摘要： A control circuit for a windshield wiper motor which utilizes a plurality of infrared emitters that emit a chain of infrared pulses towards a plurality of infrared sensors. When rain passes between the infrared emitters and the infrared sensors, it will interrupt the flow of pulses therebetween. A control circuit senses the missed pulses and selectively energizes a low-speed, mid-speed and high-speed winding associated with the wiper motor for varying the speed of the windshield wipers. The device automatically controls the operation of the windshield wipers of a vehicle.

    摘要翻译： 一种用于挡风玻璃刮水器电动机的控制电路，其利用向多个红外传感器发射红外脉冲链的多个红外发射器。 当红外发射器和红外线传感器之间的雨水通过时，它将中断其间的脉冲流。 控制电路感测漏电脉冲，并选择性地激励与刮水器电机相关联的低速，中速和高速绕组，以改变挡风玻璃刮水器的速度。 该装置自动控制车辆的挡风玻璃刮水器的操作。