Working principle of China micro brushless motor.
Brushless motor adopts electronic commutation, coil is fixed, magnetic pole is rotated. The brushless motor uses a set of electronic devices that sense the position of the permanent magnet's magnetic poles through Houle elements, using an electronic circuit to switch the direction of the current in the coil in a timely manner, ensuring that the correct direction of the magnetic force is generated to drive the motor. The defect of Brush Motor is eliminated. These circuits, they're Motor controller. Brushless motor controller, but also can achieve some functions brush motor can not be achieved, such as adjusting the power supply switching angle, brake motor, make motor reverse, lock motor, brake signal, stop to the motor power. Now Battery car electronic alarm lock, on the full use of these functions. The brushless DC motor is a typical mechatronics engineering product, which is composed of the main body of the motor and the driver. Since the DC motor operates autonomously, there is no additional winding on the rotor, as is the case with synchronous motors that start under heavy loads with variable frequency drives, and no oscillation or out of step when the load changes abruptly.
