주파수 전달함수 합성법에 의한 모델축소 및 PID 제어기 설계

• Published in: 전기학회 논문지 P권, 54P(1) Vol. 54P; no. 1; pp. 34 - 40
• Main Authors: 金周植(Ju-Sik Kim), 郭明信(Myung-Shin Kwag), 金鍾根(Jong-Gun Kim), 全炳錫(Byeong-Seok Jeon), 鄭秀鉉(Su-Hyun Jeong)
• Format: Journal Article
• Language: Korean
• Published: 대한전기학회 2005
• Subjects: 전기공학; model reduction; PID controller; total least square; frequency transfer function synthesis
• ISSN: 1229-800X; 2586-7792

This paper presents a frequency transfer function synthesis for simplifying a high-order model with time delay to a low-order model. A model reduction is based on minimizing the error function weighted by the numerator polynomial of reduced systems. The proposed method provides better low frequency fit and a computer aided algorithm. And in this paper, we present a design method of PID controller for achieving the desired specifications via the reduced model. The proposed method identifies the parameter vector of PID controller from a linear system that develops from rearranging the two dimensional input matrices and output vectors obtained from the frequency bounds.