Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Dynamic Characteristic Analysis and Transfer Function Estimate of Acoustic System for Transformer Noise Control

변압기 소음제어를 위한 음향 시스템의 동특성 해석 및 전달함수 추정

  • 김영달 (정회원, 명지대학교 전기공학과 대학원) ;
  • 정창경 (정회원, B.K. System 대표이사·공박) ;
  • 심재명 (정회원, 대전산업대학교 전기공학과 교수·공박)
  • Published : 1999.08.01
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Abstract

This paper presents a method of ANC for transfonrer noise control utilizing a sproker and microphone pair. In this study, the main focus is on identifying the dynamic characteristics of speaker - amplifier microphone path. This study presents a theoretical method to identify the dynamic characteristics of speaker-microphone pairs. The transfer functions of microphone - speaker pair have been estimated utilizing sequential least square(SLS) algorithm. We identified the estimated transfer function has stable JXlles and zeros in z-plane. This paper also propose an architecture far the noise cancellation to which we applied the estimated transfer function.nction.

본 연구는 스피터와 마이크폰쌍을 이용하여 변압기 소음 감소를 위한 적응 능동소음제어에 있어서 스피커-증폭기-마이크로폰 경로와 스피거-마이크로폰 쌍의 동특성에 대한 이론적인 내용과 시뮬레이션을 통하여 이를 확인하였다. 또한 음향경로 내에 존재하는 마이크로폰-스피커 쌍의 전달함수를 SLS(sequential least square)알고리즘으로 추정하였으며, 추정된 전달함수에 대한 identify는 z 평면에서 안정된 극점과 영점을 갖고 있음을 확인하였다.

Keywords

References

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