Finite Record Effects of the Errors-in-Variables Estimator for Linear Dynamic Systems

被引:4
|
作者
Barbe, Kurt [1 ]
Pintelon, Rik [1 ]
Vandersteen, Gerd [1 ]
机构
[1] Vrije Univ Brussel, Dept ELEC, B-1050 Brussels, Belgium
关键词
Errors-in-variables (EIV); frequency domain; leakage; linear dynamic systems; weighted least squares; windowing; FREQUENCY-DOMAIN; IDENTIFICATION; MODELS;
D O I
10.1109/TIM.2010.2051601
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The frequency domain errors-in-variables (EIV) estimator for linear dynamic systems with periodic excitations is generally formulated as a maximum likelihood (ML) estimator, where the estimated input-output noise (co) variances are used. In this paper, we study the finite record influences on the uncertainty of the ML estimator. Furthermore, we discuss when a significant influence can occur and derive a practical method to circumvent this problem without the need of introducing parametric noise models.
引用
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页码:642 / 654
页数:13
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