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컬럼타입 EPS 시스템 래틀 시험 스펙 제정에 대한 연구
김승환(Seunghwan Kim),한민규(Mingyu Han),이재용(Jaeyong Lee),문진동(Jingdong Moon),김민식(Minsik Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Recently, as a gradual improvement of the vehicle noise and vibration, squeak and rattle noise other than typically operational noise has been interested. In this paper, to establish Column type EPS system rattle test specifications, system rattle test was carried out as the experimental method using quiet shaker, and was researched focusing on the U-joint and rack & pinion gear on the main causes of the rattle. As a result, we found out that the Road Load Profile is more reasonable exciting condition than the Sine sweep for Column type EPS system rattle test.