한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제12권8호
  • /
  • Pages.589-597
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  • 2002
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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최대 엔트로피 스펙트럼 방법을 이용한 차량의 과도 응답 특성 해석

Maximum Entropy Spectral Analysis for Nonstationary Random Response of Vehicle

  • Zhang, Li Jun (Mechanical and Automotive Engineering, Liaoning Institute of Technology, China) ;
  • Lee, Chang-Myung (Dept. of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Wang, Yan Song (Dept. of Mechanical and Automotive Engineering, University of Ulsan)
  • 발행 : 2002.08.01
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초록

주행중인 차량의 동적 거동에 대한 응답을 해석하기 위하여 시간영역에서 뿐만 아니라 주파수 영역에서의 해석이 필요하다. 주파수 영역에서의 해석을 위하여 시간영역에서의 값을 FFT를 이용하여 주파수 영역으로 변화하는 방법이 일반적으로 사용되어 왔다. 본 연구에서는 최대 엔트로피 방법을 이용하여 기존의 FFT 방법보다 차량의 과도응답특성을 시간영역 및 주파수 영역에서 편리하게 해석할 수 있는 방법을 제시하고 있다.

In this paper the nonstationary response of accelerating vehicle is firstly obtained by using nonstationary road roughness model in time domain. To get the result of nonstationary response in frequency domain, the maximum entropy method is used for Processing nonstationary response of vehicle in frequency domain. The three-dimensional transient maximum entropy spectrum (MES) of response is given.

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참고문헌

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