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由机械原因引起的噪声种类很多,也比较复杂,常见的大致可分为四大部分:(1)转子的不平衡;(2)轴承;(3)电刷;(4)构件共振。还有一些异常声,但这是由于安装不当或零部件损坏引起的声响。这种电机已不允许正常运行,故不应列入正常电机的噪声来讨论。
There are many kinds of noise caused by mechanical reasons. They are also quite complicated. The common ones can be divided into four major parts: (1) rotor imbalance; (2) bearings; (3) brushes; (4) component resonances. There are some abnormal sounds, but this is due to improper installation or components caused by the sound damage. This type of motor is no longer allowed to operate normally and should not be included in the normal motor noise.