来源：http://www.jnmcd.com 发布时间：2019-01-22 浏览：次
Brushless DC motor and brushless motor are very similar in shape and shape. If they are not carefully distinguished, they may cause trouble. So, how to distinguish from the appearance is the brushless DC motor or the brushless DC motor? Xiaobian teaches you the following tactics:
Method 1: Looking at the appearance, the brushless DC motor is generally flat (small power or circular), and the length of the brushless DC motor is larger than the diameter.
Method 2: The lead-out wire of the motor, the rotor of the brushless DC motor does not need external power supply, so there is no lead-out wire; and the brushless DC motor needs external power supply, so there are two power lines, the lead-out wire of the stator can not be distinguished.
Method 3: Check the structure, remove the motor, see the carbon brush is a brushless DC motor, otherwise it is a brushless DC motor.
Method 4: Check the nameplate. Generally, the manufacturer will mark the parameters on the motor nameplate, and the model of brushless DC motor is different from that of brushless DC motor, which can be separated from the level. For example, the brushless motor of rattan ruler is initially represented by the letter BLD, while the brushless DC motor is represented by DK.
In addition to the above methods of distinguishing the two from each other in appearance, we can go through some practical operations to further recognize the difference. For example:
One: Generation method test, using pointer multimeter connected to DC motor power supply line, multimeter adjusted to low voltage, slowly rolling motor shaft with hand, if the pointer can accelerate the rolling, pointer deflection is brushless DC motor, and vice versa is brushless DC motor.
Second: Observing the continuous operation time, compared with the brushless motor, the brushless DC motor will have a longer connection operation time, because the brushless motor does not need to replace the carbon brush; and the carbon brush with the brush motor will wear out after a period of time, and need to be replaced in order to operate normally.
So there is a big difference between them in continuous operation time, but we should pay attention to: the length of continuous operation time does not mean the service life of the motor! The theory of long continuous operation time does not necessarily mean the long service life of the motor! Whether the brushless motor or the brushless motor, its service life depends on the normal operation time of the weakest part of the main parts of the motor.
For example, if the winding manufacturing process of brushless motor is not high quality, the quality of materials used is poor, and the workmanship is rough, then the worst motor is brushless motor, not brushless motor.
The above information is our Shandong micro-motor sorting and publishing hope to help you all on our website is: http://www.jnmcd.com!