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차량용 전동 액추에이터 기어박스의 작동소음 저감을 위한 기초 연구
김찬호(Chanho Kim),서대관(Daekwan Seo),신헌철(Heoncheol Shin),이정인(JunginLee) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Recently, automotive industry is facing changes in a new trend of technology such as eco-friendly, high efficiency and autonomous driving car, and have been overcoming through substitution of internal combustion engine over electric motors. To come up with, automotive parts which are depend on internal combustion engine power has been changed into electric motors and gearbox combinations, and controlling its operating noise is getting more important to satisfy customers’ emotional needs. Through this study, the basic research about operating noise control for an automotive-applied motor driven actuator was performed by analyzing its operating noise with every steps of operating modes. As a result of analysis for each mode, noise and vibration increased at specific rpm of drive motor. As a comparison between noise source and the results of modal test of the system, operating frequency and resonance frequency of the system were overlapped. To solve this problem, several steps of design changing were performed such as changing the shape of gearbox’s cover and the shape of the rubber seal. The results of the steps were defined, and the most effective step was derived.
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