Brushless DC motors are common in industrial applications all over the world. At a basic level, there are brushless and brushless motors, as well as DC and AC motors. As you might imagine, DC brushless motors do not contain brushes and use DC current. These motors offer a number of specific advantages over other types of electric motors, but what exactly is a DC brushless motor, beyond the basics?
The working principle of brushless DC motor. It is often helpful to explain how brush-DC motors work in the first place, as they were used for some time before the advent of brushless DC motors. A brush DC motor has a permanent magnet on the outside of its structure and a rotating armature on the inside. The permanent magnet fixed on the outside is called the stator. An armature that rotates and contains an electromagnet is called a rotor. In a brush-DC motor, the rotor rotates 180 degrees as the current flows to the armature. To go further, the pole of the electromagnet must flip. As the rotor rotates, the brush makes contact with the stator, flipping the magnetic field and rotating the rotor a full 360 degrees. Brushless DC motors essentially turn from the inside out and do not need a brush to turn over the electromagnetic field. In the brushless DC motor, the permanent magnet is on the rotor and the electromagnet is on the stator. The computer then charges the electromagnets in the stator to rotate the rotor 360 degrees.
What is the purpose of the brushless DC motor? Brushless DC motors are typically 85-90% efficient, while brushless motors are typically only 75-80% efficient. Brushes eventually wear out, sometimes creating dangerous sparks that limit the life of the brush motor. Brushless DC motors are quiet, light and last longer. Because the computer controls the current, the brushless DC motor can achieve more accurate motion control. Because of all these advantages, brushless DC motors are often used in modern equipment that requires low noise and heat, especially for continuous operation. This could include washing machines, air conditioners and other consumer electronics. They may even be the main source of power for service robots, where forces need to be controlled very carefully for safety reasons. Brushless DC motors offer several distinct advantages over other types of electric motors, which is why they have found their way into so many household items and may be a major factor in the growth of service robots both in and out of industry.
Brushless DC motor function is simple, with brushless DC motor as the power, can be the air in the container out, and then into the container or directly discharged into the atmosphere. Brushless DC motor, often used for online sampling, pumping, pumping, etc. The DC brushless motor is driven by the DC brushless motor. The circular motion of the motor makes the diaphragm in the pump do reciprocating motion through the mechanical device, so that the air with a fixed volume in the pump chamber is compressed and stretched to form a vacuum (negative pressure), and the pressure difference between the pump inlet and the outside atmospheric pressure is generated. Under the action of differential pressure, the gas is pressed (sucked) into the pump chamber and then discharged from the exhaust port. Micro DC motor is generally used, the volume of AC motor can not be very small. The service life of DC brushless motor is much longer than that of brushless motor.
