Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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Dynamic Characteristics of the Noise and Vibration of High-speed Train's Wheelset using Time-varying Frequency Analysis

시간-주파수 분석을 이용한 고속철도차량 윤축에서 발생하는 소음과 진동의 동적 특성

  • 이준석 (과학기술연합대학원대학교/한국철도기술연구원) ;
  • 최성훈 (한국철도기술연구원, 차세대고속철도기술개발사업단) ;
  • 김상수 (한국철도기술연구원, 차세대고속철도기술개발사업단) ;
  • 박춘수 (한국철도기술연구원, 차세대고속철도기술개발사업단)
  • Published : 2009.08.30
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Abstract

In this paper, a relationship between the noise and vibration of a high-speed train's wheelset is examined by using time-varying frequency analysis with random data analysis which together contributes to a reduction in the number of experimental running. The noise and vibration of the wheelset is mainly caused by an interaction between the wheel and railway which shows in non-stationary characteristics. For the analysis, they are measured by some microphones and accelerometers, and those signals are post-processed by time-varying frequency analysis with random data analysis. From the analysis, their methods are useful for analyzing the noise and vibration of high-speed train's wheelset.

본 논분에서는 보다 적은 실험으로 고속철도차량의 윤축에서 발생하는 소음과 진동의 동적 특성을 알기 위해 불규칙 신호처리와 시간-주파수 해석을 이용하여 분석하였다. 윤축의 소음과 진동은 대부분 차륜과 궤도의 비정상상호작용이 원인이다. 이를 분석하기 위해 마이크로폰과 가속도계를 이용하여 데이터를 수집하고 붙규칙 신호처리와 시간-주파수 분석을 이용하여 분석하였다. 분석한 결과, 이 방법들은 고속철도차량의 윤축에서 발생하는 소음과 진동의 동적특성을 분석하는데 유용함을 확인하였다.

Keywords

References

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