AUTHOR : 김지민, 김도진, 홍정표, 이근호
ORGANIZATION : 한국자동차공학회
JOURNAL :
YEAR : 2011.05
VOL :
ISSUE : 부분종합학술대회
PAGE : 1106 ~ 1110
This paper deals with acoustic noise of EPS motor. Acoustic noise is the important characteristics of EPS motor because the motor is near to driver in case of Column type EPS motor. Vibration generated by electromagnetic force of motor is the main cause of noise. Especially a great noise occurs by the resonance where natural frequency of motor is identical to harmonics frequency of electromagnetic force. Therefore reduction in harmonics of electromagnetic force is required for reducing the noise. In this paper, the harmonics of electromagnetic force is reduced by the improvement design of motor and influence on harmonics frequency is analysed by noise test.