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Study On location of Damping Material for Vibration of Metal Brush Of Micromotor
HAN Xu;MA Jun;WANG Jia-ke;CUI Zhao-long
2011, 31 (5):
108-112.
DOI: 10.3969/j.issn.1006-1355-2011.05.025
In order to increase the lifespan and efficiency of micromotors, the damping effect of the metal brushes of micromotors is studied. The relationship between Rayleigh damping model and dissipation factor of materials is established. The location of rubber damper in the structure is simulated and optimized by means of the transient dynamic analysis module of MSC.Marc. Meanwhile, the vibration magnitudes of the metal brushes are measured with Polytec Scanning Vibrometer when the rubber damper attached at the original and optimal locations respectively. The results show that the vibration magnitude of triple frequency after the optimization can be reduced to 12.1 % (clockwise rotation) and 11.2 % (counterclockwise rotation) respectively. This method can improve the vibration performance of metal brushes. It is of significance for engineering practice.
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