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Active noise control with on-line adaptive algorithm in a duct system

덕트에서 온라인 적응 알고리듬을 이용한 능동소음제어

  • Kim, Heung-Seob (Mechanical Engineering Technology Research Center, Hanyang University) ;
  • Hong, Jin-Seok (Mechanical Engineering Technology Research Center, Hanyang University) ;
  • Oh, Jae-Eung (Dept. of Precision Mechanical Engineering, Hanyang University)
  • 김흥섭 (한양대학교 기계기술연구소) ;
  • 홍진석 (한양대학교 기계기술연구소) ;
  • 오재응 (한양대학교 정밀기계공학과)
  • Published : 1997.08.01

Abstract

In the case of the transfer function for the secondary path is dependent on time, the on-line method which can model it is continuously must be applied to the active noise control technique. And the adaptive random noise technique among the on-line methods is effective in the narrow-band control. In this method, the signal to noise ratio between random noise for modeling and primary noise is low. Therefore, the estimations of transfer function will be prone to inaccuracies and the convergence time will be too long. Such imperfections will have an influence upon the performance of an active noise controller. In this study, t enhance the signal to noise ratio, the on-line method that is combined the conventional adaptive random noise technique and the adaptive line enhancer, is proposed. By using proposed on-line method, a rigorous system identification and control of primary noise have been implemented.

Keywords

Adaptive Random Noise Technique;Overall Modeling Method;S/N Ratio(Signal to Noise Ratio);Narrowband Conrtol;Adaptive Line Enhancer

References

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