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    • 4. 发明申请
    • METHOD AND APPARATUS FOR DETECTING POSITION AND STARTUP A SENSORLESS MOTOR
    • 用于检测位置并启动无传感电机的方法和装置
    • US20140103909A1
    • 2014-04-17
    • US14048037
    • 2013-10-08
    • Yi-Chi LinYung-Sheng Wu
    • Yi-Chi LinYung-Sheng Wu
    • G01B7/00
    • G01B7/00G01D5/20H02P6/182H02P6/20
    • A method and a circuit for detecting positions for a motor are provided. The circuit includes a control circuit for generating PWM signals, high-side transistors and low-side transistors, resistors and a microcontroller. The high-side transistors and the low-side transistors generate voltage signals configured to drive the motor. The resistors coupled to the low-side transistors generate sensing signals in response to motor currents and back-EMF signals. The microcontroller controls the control circuit. the PWM signals are utilized to control the high-side transistors and the low-side transistor for generating the voltage signals. The high-side transistors are coupled to the input power source. The low-side transistors are coupled to the ground via the resistors. The control circuit determines the motor position in accordance with the sensing signals.
    • 提供了一种用于检测电动机位置的方法和电路。 该电路包括用于产生PWM信号的控制电路,高侧晶体管和低侧晶体管,电阻器和微控制器。 高侧晶体管和低侧晶体管产生构造成驱动电动机的电压信号。 耦合到低侧晶体管的电阻器响应于电机电流和反电动势信号产生感测信号。 微控制器控制控制电路。 PWM信号用于控制用于产生电压信号的高侧晶体管和低侧晶体管。 高侧晶体管耦合到输入电源。 低端晶体管通过电阻耦合到地。 控制电路根据感测信号确定电机位置。