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    • 23. 发明授权
    • Pulse-width-modulation motor drive circuit having potential limiter
    • 具有电位限制器的脉宽调制电机驱动电路
    • US07501781B2
    • 2009-03-10
    • US11643668
    • 2006-12-22
    • Alex HorngChung-Ken ChengCheng-Nan Tsai
    • Alex HorngChung-Ken ChengCheng-Nan Tsai
    • G05B11/28
    • H02P6/16H02P1/16H02P6/20
    • A PWM motor drive circuit includes a drive IC member, a PWM converter circuit and a potential limiter. The drive IC member electrically connects with a motor coil and further includes a pin electrically connected with the PWM converter circuit. The potential limiter has a first terminal electrically connected with a point between the pin of the drive IC member and the PWM converter circuit, and a second terminal electrically connected with a power source to supply an initial voltage to the pin of the drive IC member via the potential limiter. When the motor starts, the potential limiter can adjust of the initial voltage supplying to the pin of the drive IC member so that the drive IC member cannot unexpectedly enter a stop or high-speed mode.
    • PWM电动机驱动电路包括驱动IC部件,PWM转换器电路和电位限制器。 驱动IC部件与电动机线圈电连接,还包括与PWM转换电路电连接的销。 电位限制器具有与驱动IC部件的引脚与PWM转换电路之间的点电连接的第一端子和与电源电连接的第二端子,用于向驱动IC部件的引脚经由 潜在限制器。 当电动机起动时,电位限制器可以调节向驱动IC元件的引脚提供的初始电压,使得驱动IC元件不能意外地进入停止或高速模式。
    • 24. 发明申请
    • Pulse-width-modulation motor drive circuit having potential limiter
    • 具有电位限制器的脉宽调制电机驱动电路
    • US20080101778A1
    • 2008-05-01
    • US11643668
    • 2006-12-22
    • Alex HorngChung-Ken ChengCheng-Nan Tsai
    • Alex HorngChung-Ken ChengCheng-Nan Tsai
    • H02P7/29
    • H02P6/16H02P1/16H02P6/20
    • A PWM motor drive circuit includes a drive IC member, a PWM converter circuit and a potential limiter. The drive IC member electrically connects with a motor coil and further includes a pin electrically connected with the PWM converter circuit. The potential limiter has a first terminal electrically connected with a point between the pin of the drive IC member and the PWM converter circuit, and a second terminal electrically connected with a power source to supply an initial voltage to the pin of the drive IC member via the potential limiter. When the motor starts, the potential limiter can adjust of the initial voltage supplying to the pin of the drive IC member so that the drive IC member cannot unexpectedly enter a stop or high-speed mode.
    • PWM电动机驱动电路包括驱动IC部件,PWM转换器电路和电位限制器。 驱动IC部件与电动机线圈电连接,还包括与PWM转换电路电连接的销。 电位限制器具有与驱动IC部件的引脚与PWM转换电路之间的点电连接的第一端子和与电源电连接的第二端子,用于向驱动IC部件的引脚经由 潜在限制器。 当电动机起动时,电位限制器可以调节向驱动IC元件的引脚提供的初始电压,使得驱动IC元件不能意外地进入停止或高速模式。
    • 25. 发明授权
    • Frequency-variable pulse-width-modulation motor drive circuit capable of operating under different PWM frequencies
    • 频率可变的脉宽调制电机驱动电路,能够在不同的PWM频率下工作
    • US07265514B1
    • 2007-09-04
    • US11386673
    • 2006-03-23
    • Alex HorngChung-Ken ChengPei-Wei Lo
    • Alex HorngChung-Ken ChengPei-Wei Lo
    • H02P6/08
    • H02P6/16H02P6/08
    • A frequency-variable PWM motor drive circuit includes a drive IC member, a Hall IC member, a PWM converter circuit and a compensation unit. The drive IC member electrically connects with the Hall IC member, the drive IC member further includes a pin electrically connected with the compensation unit and the PWM converter circuit. The PWM converter circuit has a PWM input pin to receive a PWM signal, and converts it into a voltage signal. The compensation unit connects between the pin of the drive IC member and the PWM converter circuit. In operation, the compensation unit can improve a waveform of the voltage signal supplied from the PWM converter circuit, and then output it to the pin of the drive IC member. Consequently, the drive IC member can be steadily operated at predetermined motor speeds under various frequencies of the PWM signals.
    • 频率可变PWM电动机驱动电路包括驱动IC部件,霍尔IC部件,PWM转换电路和补偿部。 驱动IC元件与霍尔IC元件电连接,驱动IC元件还包括与补偿单元和PWM转换电路电连接的引脚。 PWM转换器电路具有PWM输入引脚,用于接收PWM信号,并将其转换为电压信号。 补偿单元连接在驱动IC部件的引脚和PWM转换电路之间。 在操作中,补偿单元可以改善从PWM转换器电路提供的电压信号的波形,然后将其输出到驱动IC构件的引脚。 因此,可以在PWM信号的各种频率下以预定的电动机速度稳定地操作驱动IC部件。
    • 27. 发明授权
    • Motor circuit with power-off braking function
    • 电机电路具有断电制动功能
    • US08970149B2
    • 2015-03-03
    • US13619037
    • 2012-09-14
    • Chung-Ken ChengShou-Chien ChangChieh-Jen Yang
    • Chung-Ken ChengShou-Chien ChangChieh-Jen Yang
    • H02P6/14
    • H02P6/085H02P6/24H02P6/26
    • A motor circuit with power-off braking function includes a driving unit, a coil unit, and a braking unit. The driving unit includes a plurality of switch arms connected in parallel, with each switch arm having a series contact. The coil unit includes a plurality of coils and a central contact. Each coil includes an end connected to the series contact of one of the switch arms. The other end of each coil is connected to the central contact. The braking unit includes a brake loop switch coupled between the central contact of the coil unit and an end of the switch arms. When power is cut off, a plurality of brake loops is formed to share the transient current during braking.
    • 具有断电制动功能的电动机电路包括驱动单元,线圈单元和制动单元。 驱动单元包括并联连接的多个开关臂,每个开关臂具有串联触点。 线圈单元包括多个线圈和中心触点。 每个线圈包括连接到一个开关臂的串联触点的端部。 每个线圈的另一端连接到中心触点。 制动单元包括联接在线圈单元的中心接触件和开关臂端部之间的制动回路开关。 当断电时,形成多个制动回路以在制动期间共享瞬态电流。