Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Active Noise Cancellation System in a Vehicle Cabin Using the Weighting Factors of Control Error Path

제어오차계의 가중치를 이용한 차실내 능동소음제어 시스템 연구

  • 홍석윤 (고등기술연구원, 자동차기술연구실) ;
  • 허현무 (한국철도기술연구원 차량동력학실)
  • Published : 1996.12.01
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Abstract

The active noise cancellation system showing the effective convergence and stability has been studied by simplifying the controller structures using the weighting factors of control error path to the multi-channel filtered-x LMS algorithm which needs a lot of calculations and the performance has been verified experimentally. Besides, to implement the system performance in a vehicle cabin, experimental work for selecting the suitable numbers and positions of the microphones and speakers was accomplished. Effectively combining a TMS 320C 31 main processor conducting real number calculations and having various functions with other components, the purpose-built system board for active noise cancellation has been designed and with this board, car active noise cancellation system showing maximum stable 10dB noise reduction has been obtained at the car idling conditions above 3000rpm range.

Keywords

References

  1. Adaptive Signal Processing Widrow, B.;Sterns, S. D.
  2. Journal of Sound and Vibration v.101 Self Adaptive Broband Active Sound Control System Roure, A.
  3. IEEE Tr. on Acoustics, Speech, and Signal Processing v.ASSP-35 no.10 A Multiple Error LMS Algorithm and Its Application to the Active Control of Sound and Vibration Elliott, S. J.;Stothers, M. I.;Nelson, P. A.
  4. IEEE ICASSP Multichannel Active Sound Control using Adaptive Filtering Elliott, S. J.;Nelson, P. A.
  5. IEEE Internal Conference on Acoustics, Speech, and Signal Processing Active Noise Control using Adaptive Digital Signal Processing Eriksson, L. J.;Allie, M. C.;Bremigan, C. D.
  6. IEEE Tr. on Signal Processing v.40 no.5 The Behavior of a Multiple Channel Active Control System Elliott, S. J.;Boucher, C. C.;Nelson, P. A.
  7. TMS320C30 User's Guide Texas Instruments