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173 条记录 (耗时 0.054 秒)

    Motor control circuit for variable reluctance motor
    83.
    发明授权
    Motor control circuit for variable reluctance motor 失效
    用于可变磁阻电机的电机控制电路

    公开(公告)号：US4625158A

    公开(公告)日：1986-11-25

    申请号：US695170

    申请日：1985-01-25

    申请人： Jon C. Taenzer

    发明人： Jon C. Taenzer

    IPC分类号： H02P27/06 ,  G05B19/414 ,  H02P3/06 ,  H02P25/08 ,  H02P5/40

    CPC分类号： G05B19/4142 ,  H02P25/08 ,  H02P3/065 ,  G05B2219/34466 ,  G05B2219/41002 ,  G05B2219/42237

    摘要： An amplifier circuit for controlling a direct drive motor has an input circuit for converting the digital control word to a pulse width modulated signal which is coupled to a control input of the amplifier through an isolation device. This isolation device and the other gain devices as well as many of the test circuitry devices and the feedback circuitry are referenced to a common, internally generated, stable reference level voltage. An input position control signal is coupled to an operational amplifier whose other inputs is a signal representing the current through the coil at any time. The output of the operational amplifier is a signals which will seek to equalize the two inputs signals. The output of the operational amplifier is coupled to the two controlling transistors which provide the drive current to the motor coil. Diodes are appropriately coupled to the switching transistor to incorporate regeneration effects for the minimization of power consumption. A monitor is also provided to track current flow out of the high voltage source to detect any shorts in the output system or load. Two transistor switches are provided between the initial high-voltage source and the coils. A simplified logic circuitry is provided which responds to the detection of failure mode operating conditions and terminates the operation of these switches to cut off high voltage to the coils.

    摘要翻译： 用于控制直接驱动电动机的放大器电路具有用于将数字控制字转换成脉冲宽度调制信号的输入电路，其通过隔离装置耦合到放大器的控制输入端。 该隔离装置和其他增益装置以及许多测试电路装置和反馈电路参考公用的内部产生的稳定的参考电平电压。 输入位置控制信号耦合到运算放大器，其运算放大器的其它输入是表示任何时刻通过线圈的电流的信号。 运算放大器的输出是寻求均衡两个输入信号的信号。 运算放大器的输出耦合到向电动机线圈提供驱动电流的两个控制晶体管。 二极管适当地耦合到开关晶体管，以结合用于最小化功耗的再生效应。 还提供监视器以跟踪高压源中的电流，以检测输出系统或负载中的任何短路。 在初始高电压源和线圈之间提供两个晶体管开关。 提供了一种简化的逻辑电路，其响应于故障模式操作条件的检测，并终止这些开关的操作以切断线圈的高电压。

    Method and apparatus for position control of an electric motor
    85.
    发明授权
    Method and apparatus for position control of an electric motor 失效
    电动机位置控制方法及装置

    公开(公告)号：US4558265A

    公开(公告)日：1985-12-10

    申请号：US471434

    申请日：1983-03-02

    申请人： Hiroshi Hayashida ,  Tadashi Takahashi ,  Kunio Miyashita

    发明人： Hiroshi Hayashida ,  Tadashi Takahashi ,  Kunio Miyashita

    IPC分类号： H02P3/08 ,  G05B19/416 ,  G05D3/12 ,  H02P3/06 ,  H02P7/00 ,  G05B13/00

    CPC分类号： G05B19/416 ,  G05B2219/34215 ,  G05B2219/37388 ,  G05B2219/41021 ,  G05B2219/41245 ,  G05B2219/42237

    摘要： A control process and apparatus for positioning an electric motor provided with a rotation angle detector at a designated position positively at a high speed without being accompanied with hunting notwithstanding variation in the motor current and inertia of a load. The control process activated upon starting of the motor and ending at the stoppage of the motor at the designated position includes a first control region in which acceleration of the motor having been started is detected and subsequently a constant speed operation of the motor is effected at a maximum speed. A deceleration initiating time point is determined in dependence on the acceleration. A second control region is provided in which the motor is decelerated in accordance with a deceleration pattern determined in dependence on a rotation angle extending between a position corresponding to the deceleration initiating time point and the commanded stop position, and motor torque and inertia of load is detected at the deceleration initiating time point. During a third control region the motor is progressively decelerated by reducing correspondingly the gain of voltage (current) applied to the motor when the motor position approaches to the commanded stop position. The control process also includes a fourth control region in which, when the motor stops short of or beyond the commanded position, the duty ratio of voltage applied to the motor is progressively increased to thereby re-start the motor toward the commanded position, and a fifth control region in which the motor is held at the commanded stop position.

    摘要翻译： 一种用于将设置有旋转角度检测器的电动机定位在指定位置的高速控制处理和装置，而不伴随着电动机电流和负载惯性的变化。 在指定位置启动电动机并停止电动机时启动的控制过程包括检测到起动电动机的加速度的第一控制区域，随后电动机的恒定速度运行在 最大速度。 根据加速度确定减速启动时间点。 提供第二控制区域，其中电动机根据根据与减速起始时间点对应的位置和指令停止位置之间延伸的旋转角度确定的减速度图形减速，电动机转矩和负载惯量为 在减速启动时间点检测。 在第三控制区域期间，当电动机位置接近指令停止位置时，通过相应地减小施加到电动机的电压（电流）的增益，电动机逐渐减速。 控制处理还包括第四控制区域，其中当电动机停止或超过指令位置时，施加到电动机的电压的占空比逐渐增加，从而将电动机重新启动到指令位置，并且 第五控制区域，其中马达保持在指令停止位置。