来源：http://www.jnmcd.com 发布时间：2019-02-28 浏览：次
There are many reasons for the occurrence of reversing sparks. We must find out the main reasons among many factors in order to eliminate the faults and improve the reversing. Look at the causes of reversal deterioration. Normalization of commutation condition is a common method in DC motor commutation processing. Its principle is as follows.
The commutation of a DC motor is always normal when it has just been put into operation or in the past, but it deteriorates gradually or abruptly in the subsequent operation, which indicates that the sliding contact, motor structure and the working conditions of the motor components are normal before the commutation deteriorates.
In the process of motor operation, the working condition of some parts has changed, or the surrounding environment has changed, which destroys the sliding contact, changes the normal commutation condition, and leads to the deterioration of commutation. If these factors affecting motor commutation are comprehensively checked and adjusted to enable it to recover its normal condition, then commutation can recover its normal condition.
Commutation normalization checking is a common method for DC motor to find out the cause of commutation and to eliminate its faults. It includes the following main items:
1. Measurement of the resistance between commutators
2. Measurement of commutator swing
3. Viewing the Neutral Surface of Brush
4. Viewing and Adjusting Pole Distance, Drawing Drama and Air Gap
5. Viewing the working performance of brushes and brush grips
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