| 摘要 |
The present invention relates to a circuit and a method to suppress an overload on a geared brushless DC (BLDC) motor for a juicer for green vegetable juice. The circuit to suppress an overload on a geared brushless DC motor for a juicer for green vegetable juice comprises: a BLDC motor (110); a hall sensor (120); a motor driver (140); an inverter unit (130); and an overload determination and suppression means which detects a current rotation number of the BLDC motor (110), determines that an overload exists when the detected current rotation number is smaller than a preset rotation number, and, when the overload is determined to exist, suppresses the overload on the BLDC motor (110) by driving the BLDC motor (110) in a reverse direction by outputting a motor reverse rotation control signal to the motor driver (140) for a preset period after a motor drive stopping signal is outputted to the inverter unit (130). The method to suppress an overload on a geared brushless DC motor for a juicer for green vegetable juice provides a method to suppress the overload on the BLDC motor by using the circuit to suppress an overload. According to the present invention, when an overload exceeding a threshold load value is applied on the BLDC motor, the overload state is automatically detected and a load exceeding the threshold load value is automatically suppressed. |
