Order estimation for linear time-invariant systems using frequency domain identification methods

被引：17

作者：

Rolain, Y

Schoukens, J

Pintelon, R

机构：

[1] Department ELEC/TW, Vrije Universiteit Brussels

来源：

IEEE TRANSACTIONS ON AUTOMATIC CONTROL | 1997年 / 42卷 / 10期

关键词：

model selection; system identification;

D O I：

10.1109/9.633829

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A two-step coarse-fine order estimation technique is proposed to determine the order of the numerator and the denominator polynomials of rational transfer function models for single-input/single-output (SISO) linear time-invariant systems. The coarse order estimation is based on rank detection by verification of the stochastic significance of the singular values of a linearized problem. The fine order estimation is based on a statistical analysis of the maximum likelihood cost function. The method is tested on measurements of low- (4 zeros, 6 poles) and high- (58 poles, 58 zeros) order systems.

引用

页码：1408 / 1417

页数：10

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