The main sources of noise during the operation of miniature DC motors are mainly from gear reducers. There are two main types of noise: technical and physical reasons: Reducing the gear transmission noise during the operation of the gear reduction box has become an important research topic in the industry. Many scholars at home and abroad have regarded the changes in gear tooth stiffness in gear transmission as the main factors of gear dynamic load, vibration and noise. The shape modification method is used to minimize the dynamic load and speed fluctuation to achieve the purpose of reducing noise. This method proved to be a more effective method in practice. By optimizing the gear parameters, such as the coefficient of displacement, the coefficient of tooth height, the pressure angle, and the center distance, the impact impact speed is minimized. The gear design method of meshing the impact of the pitch circle can also significantly reduce the noise of the gear reduction box. 微型直流电机 的噪音也存在技术方面的一些原因。 Of course , there are technical reasons for the noise of miniature DC motors . For example, assembly reasons, bearing friction, broken shafts, etc. To produce low-noise environmentally friendly motor products, it is necessary to limit the physical reasons for noise control and overcome technical reasons.
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