The origin of the brushless motor and put into operation

Brushless motor, the control circuit of the reversing of the hired work to a controller ( Generally for hall sensor + controller, more advanced technology is the magnetic encoder) To implement. Take electronic commutation brushless motor, coil, magnetic rotation. Brushless motor, is to use a set of electronic devices, through the hall element, feel the location of the permanent magnet poles, according to this perspective, the use of electronic circuit, timely switch the direction of the current in the coil, guarantee of the right direction of magnetic force, to drive the motor. Eliminates have brush motor faults. These circuits, is the motor controller. Brushless motor controller, but also can implement some motor cannot achieve the function, such as the Angle of the power switch, the brake motor, the motor reverse, lock planetary gear motor, using the brake signal, stop 'power supply to the ground. Now battery car electronic alarm lock, make full use of these functions.


brushless dc motor is composed of main body of the motor and drive, is a typical mechatronics product. Because of brushless dc motor based on automatic running, so will not like the synchronous motor frequency control of motor speed under overload start plus startup winding on the rotor, also won't generate oscillation and step out when load mutation. Brushless motor speed control process is the motor power supply voltage is constant, change the electrical control signal, through the microprocessor to change the switching speed of high power MOS tube, to realize the speed change. This process is called 'frequency control of motor speed.

in the early nineteenth ji was born motor, the practicality of the planetary gear motor is a brushless forms, namely ac squirrel-cage asynchronous motor, the motor on the alternating current (ac) has been widely used in the future. But asynchronous motor has many not be able to overcome the defects, so that the slow development of motor technology. Especially the brushless dc motor has been unable to commercial operation, along with electronic technology with each passing day, until slowly into commercial operation in recent years, in terms of its essence still belong to the category of ac motor.

in addition to the brushless motor brush, the most immediate change is without the motor running when the electric spark, thus greatly reduce the electric spark interference of remote radio equipment. Brushless motor without brush, less friction force during operation, smooth running, low noise will many of the advantages of model running stability is a huge support. Wear little brush, brushless motor is mainly on the bearing, from the mechanical point of view, brushless planetary gear motor is almost a maintenance-free motor, when necessary, the only need to do some cleaning maintenance.
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