대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

디지털 오디오 앰프의 안정성과 히스테리시스에 의한 영향 해석

Stability of Digital Audio Amplifier and Analysis on the Effect of Hysteresis

  • 도태용 (한밭대학교 제어계측공학과) ;
  • 장병탁 ((주)디엠비테크놀로지) ;
  • 류태하 ((주)디엠비테크놀로지) ;
  • 류지열 ((주)디엠비테크놀로지) ;
  • 박환욱 ((주)디엠비테크놀로지)
  • 발행 : 2004.11.12
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A class D digital audio amplifier with small size, low cost, and high quality is positively necessary in the multimedia era made of home theater system and the digital audio broadcasting (DAB). It is impossible to analyze the stability of the digital audio amplifier, which is based on the PWM signal processing. To solve this problem, the digital audio amplifier is analyzed using variable structure control theory which is one of nonlinear system theories. Moreover, the magnitude and the frequency of ripple signal, which generated by hysteresis in the comparator, is obtained using describing function which is useful to represent the input-output relation of nonlinear system.

키워드