TIME-DOMAIN PADE APPROXIMATION AND MODAL-PADE METHOD FOR MULTIVARIABLE SYSTEMS.

被引：0

作者：

Bandyopadhyay, B. ^{[1
]}

Lamba, S.S. ^{[1
]}

机构：

[1] Indian Inst of Technology, New Delhi, India, Indian Inst of Technology, New Delhi, India

来源：

IEEE transactions on circuits and systems | 1987年 / 3卷 / 01期

关键词：

MATHEMATICAL TECHNIQUES - Time Domain Analysis - SYSTEMS SCIENCE AND CYBERNETICS - Multivariable Systems;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The time-domain Pade approximation and modal-Pade method for single and multivariable systems are presented. Pade equations are derived for single-input/single output (SISO) and multi-input/multioutput (MIMO) systems by assuming a state-space description of the higher-order system and its reduced-order model. For a SISO system, it is shown that these Pade equations are the same as the Pade equations obtained by a frequency-domain procedure. However, for a multivariable system, it is shown that, although a full Pade approximation exists in the frequency domain, the time-domain procedure leads only to a partial Pade approximation. A time-domain modal-Pade method for SISO and MIMO systems is proposed. A relationship between the state vectors of the systems and the model is derived for the modal-Pade reduction procedure and is referred to as an exact aggregation matrix. 13 refs.

引用

页码：91 / 94

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