Brushless dc motor is a kind of typical electromechanical integration products, and it has the biggest difference is that it USES brush motor position sensor to realize reversing, use the switch device instead of traditional contact commutator and brush. Brushless dc motor of the main advantages: 1, no spark, greatly reducing the radio interference. 2 is greatly decreased, friction, the noise will be reduced a lot. 3, is the use of long life, and the production of brushless dc motor to motor can run 2 w hours continuously. 4, from the mechanical point of view, brushless dc motor is almost a maintenance-free motor. But everything is not absolute, such as brush motor torsion torque at low speed performance is excellent, brushless motor is irreplaceable. Brushless dc motor is generally used in the control requirement is high, the speed is faster devices, such as model aircraft, precision instruments, automation equipment, etc. , are brush motors are often used in power plant, such as hair dryer, electric motor factory, household smoke lampblack machine, and so on.
