In commercial vehicles. the pulsation noise when the power steering operating is the major item to make the complain for users. If this noise have related to vibration characteristics in steering system's parts or assembly, it makes the problem in vehicle quality. Recently, the users demand the high quality in commercial vehicles, and we must identified the relevance between the pulsation noise and the vibration characteristics. After the identification, we can design the power steering system for satisfaction the user’s needs. Finally, the identification of relevance in pulsation noise for analysing the vibration characteristics will be suggested advanced power steering system.

ABSTRACT
 1. 서론
 2. 대상 차량 현상
  2.1 대상 차량 맥동 소음 문제점
  2.2 대상 차량의 P/S SYS. 개략도
 3. 전달함수 측정에 의한 진동 해석
  3.1 전달함수
 4. 진동특성 파악을 위한 실 험
  4.1 실험장치및 방법
  4.2 실험결과 및 고찰
 5. 결론
 후기
 References

• 이유엽(Howon University) | You-Yub Lee Corresponding Author