ORDER REDUCTION OF Z-TRANSFER FUNCTIONS VIA MULTIPOINT JORDAN CONTINUED-FRACTION EXPANSION

被引：2

作者：

LEE, YC ^{[1
]}

HWANG, C ^{[1
]}

SHIEH, LS ^{[1
]}

机构：

[1] UNIV HOUSTON,DEPT ELECT ENGN,HOUSTON,TX 77204

来源：

JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS | 1992年 / 329卷 / 03期

关键词：

D O I：

10.1016/0016-0032(92)90056-M

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The order reduction problem of z-transfer functions is solved by using the multipoint Jordan continued-fraction expansion (MJCFE) technique. An efficient algorithm that does not require the use of complex algebra is presented for obtaining an MJCFE from a stable z-transfer function with expansion points selected from the unit circle and/or the positive real axis of the z-plane. The reduced-order models are exactly the multipoint Pade approximants of the original system and, therefore, they match the (weighted) time-moments of the impulse response and preserve the frequency responses of the system at some characteristics frequencies, such as gain crossover frequency, phase crossover frequency, bandwidth, etc.

引用

页码：583 / 590

页数：8

共 24 条

[1] PADE TECHNIQUES FOR MODEL-REDUCTION IN LINEAR-SYSTEM THEORY - A SURVEY [J].