Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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The Developement of Moving Bandpass Filter for Improving Noise Reduction of Automative Intake in Rapid Acceleration Using ANC

능동제어기법을 이용한 자동차의 급가속 흡기소음 저감을 위한 Moving Bandpass Filter의 개발

  • Jeon Kiwon (Department of Automotive Engineering, Hanyang University) ;
  • Oh Jaeeung (School of Mechanical Engineering, Hanyang University) ;
  • Lee Choonghui (Department of Automotive Engineering, Hanyang University) ;
  • Abu Aminudin (Department of Automotive Engineering, Hanyang University) ;
  • Lee Jungyun (Department of Mechanical Engineering, Kyounggi University)
  • Published : 2005.07.01
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Abstract

The method of induction noise reduction can be classified by using passive control or active control method. However, the passive control method has a demerit to reduce the effect of noise reduction to low frequency (below) 500Hz) range and to be limited in a space of the engine room. Whereas, the active control method can overcome the demerit of passive control method. The algorithm of active control is mostly used in LMS (Least-Mean-Square) algorithm because it can obtain the complex transfer function easily in real-time. Especially, Filtered-X LMS (FXLMS) algorithm is applied to an ANC system. However, the convergence performance of LMS algorithm could not match if the FXLMS algorithm is applied to an active control of the induction noise under rapidly accelerated driving conditions. So, in order to solve the problem in this study, the Moving Bandpass Filter(MBPF) was proposed and implemented. The ANC using MBPF for the reduction of the induction noise shows that more noise reduction as 4dB than without MBPF.

Keywords

References

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