The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Simplification of Linear System via Frequency Transfer Function Synthesis

주파수 전달함수 합성법에 의한 선형시스템의 간소화

  • 김주식 (충북대 전기전자컴퓨터공학부) ;
  • 김종근 (충북대 전기공학과) ;
  • 유정웅 (충북대 전기전자컴퓨터공학부)
  • Published : 2004.01.01
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Abstract

This paper presents an approximation method for simplifying a high-order transfer function to a low-order transfer function. A model reduction is based on minimizing the error function weighted by the numerator polynomial of reduced systems. The proposed methods provide better low frequency fit and a computer aided algorithm that estimates the coefficients vector for the numerator and denominator polynomial on the simplified systems from an overdetermined linear system constructed by frequency responses of the original systems. Two examples are given to illustrate the feasibilities of the suggested schemes.

Keywords

References

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