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Performance improvement of active noise control using on-line estimation of secondary path transfer function

부가경로 전달함수의 온라인 예측에 의한 능동소음제어의 성능 향상

  • Kim, Heung-Seob (Dept. of Precision Mechanical Engineering, Hanyang University) ;
  • Sohn, Dong-Gu (Dept. of Precision Mechanical Engineering, Hanyang University) ;
  • Oh, Jae-Eung (Dept. of Car Engineering, Hanyang University)
  • 김흥섭 (한양대학교 대학원 정밀기계공학과) ;
  • 손동구 (한양대학교 대학원 정밀기계공학과) ;
  • 오재응 (한양대학교 자동차공학과)
  • Published : 1997.01.01

Abstract

In the conventional inverse modeling method for on-line modeling of the secondary path transfer function, the signal to noise ratio between the arbitrary random signal and the plant noise have to keep at -10 - -20 dB. For these reasons, the modeling can't be exactly implemented by the conventional method alone and the convergence time for modeling becomes too long. In this study, by combining the conventional inverse modeling method with an adaptive line enhancer, or with an adaptive noise canceller, a rigorous transfer functions of secondary path modeling and the control of a primary noise have been implemented simultaneously.

Keywords

S/N Ratio;Transfer Functions of Secondary Path;Adaptive Linear Enhancer;Adaptive Noise Canceller;Inverse Modeling Method;Pseudo Random Signal