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Published in:
2012 | OriginalPaper | Chapter
Closed-Loop Subspace Identification Algorithm of EIV Model Based on Orthogonal Decomposition and PCA
Authors : Jianguo Wang, Yong Guo, Juanjuan Wang
Published in: AsiaSim 2012
Publisher: Springer Berlin Heidelberg
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In this paper, after analysis of the reason why some existing subspace methods may deliver a bias in the closed-loop conditions, a new SIM for closed-loop system based on orthogonal decomposition and principal component analysis is proposed by adopting the EIV model structure. Then, the underlying reason why SIMPCA-Wc delivers a bias estimate is explained from realization theory of closed-loop system based on orthogonal decomposition. At last, simulations show that the proposed method ORT_PCA-Wc used for closed-loop EIV system is effective and feasible.