Deschrijver, Dirk (Univ. of Antwerp), Dhaene, Tom (Univ. of Antwerp)

Iterative Rational Least-Squares Method for Efficient Transfer Function Synthesis

Scheduled for presentation during the Regular Session "Linear System Identification II" (TuP09), Tuesday, July 25, 2006, 15:20−15:45, Room J

17th International Symposium on Mathematical Theory of Networks and Systems, July 24-28, 2006, Kyoto, Japan

This information is tentative and subject to change. Compiled on May 27, 2023

Abstract

This paper describes an iterative rational least-squares method, which is used for accurate transfer function synthesis of frequency-domain continous-time systems. The identification method starts from an initial set of prescribed poles, and relocates them using a Sanathanan-Koerner iteration in order to minimize the global fitting error. Orthonormal rational functions are used to improve the numerical conditioning of the system equations. The method is computationally very efficient, and the calculated transfer function is very lenient towards accurate extraction of poles and zeros.