[W-MO-23] Measurement of PM Motor Vibration/Noise and Analysis Modeling

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1. Introduction
While miniaturization and efficiency optimization are always in demand in motor development, demand is also increasing for the reduction of vibration and noise in recent years. As a tool to solve these problems in development, anticipation for the coupled electromagnetic field and structural analysis has been on the rise. Vibration and noise of electric motors are caused by electromagnetic vibration as an excitation source, as well as resonance and amplification of the structure. In order to simulate this mechanism with CAE, an electromagnetic field analysis is first used to accurately reproduce electromagnetic phenomena and obtain electromagnetic force distribution, and then a vibration and noise analysis is performed using the acquired electromagnetic force as input to evaluate whether or not harmful resonance exists in the structure.

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