Inside the brushless motor rotation for strong permanent magnets, magnet outer winding coil, current flows through the periphery of the coil can produce strong magnetic field, and with the internal magnet to produce force, and then drive the motor at high speed. Brushless motor VS a brush motor ordinary carbon brush motor, when the electricity is running carbon brush head with copper contact surface will produce some edm can cause copper head and wear of carbon brush, also caused the current loss. Brush and brushless motor is for the motor of the faults improvement, no wear and tear and wear and tear. To every ounce of power made it one of the most effective application. In addition, a brush motor after electricity, under the condition of high speed, the noise will interfere with the wireless remote control the sending and receiving of waves, so have a brush motor is usually on the back cover of welding capacitor, to weaken the noise interference. While the brushless motor does not need to install the capacitance can reduce noise, interference phenomenon. From the above comparison, we will find brushless motor has more power, more long time of flight, higher efficiency and longer service life, etc. This is the brushless motor has the advantages of the brush motor and brushless motor is equipped with the commonly used is the difference between a brush -The commutator. Have a commutation of brushless dc motor has been through graphite brush and mounted on the rotor commutator ring in contact. While by hall sensor brushless motor rotor position feedback control circuit, back to know the exact time of the motor phase commutation. Most of the brushless motor manufacturers production positioning with three hall effect sensors. Because of brushless motor without brush, so also does not have relevant interface, therefore more clean, less noise, in fact, no maintenance, longer life.
