Abstract
By extending the least squares-based iterative (LSI) method, this paper presents a decomposition-based LSI (D-LSI) algorithm for identifying linear-in-parameters systems and an interval-varying D-LSI algorithm for handling the identification problems of missing-data systems. The basic idea is to apply the hierarchical identification principle to decompose the original system into two fictitious sub-systems and then to derive new iterative algorithms to estimate the parameters of each sub-system. Compared with the LSI algorithm and the interval-varying LSI algorithm, the decomposition-based iterative algorithms have less computational load. The numerical simulation results demonstrate that the proposed algorithms work quite well.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 61304138), the Natural Science Foundation of Jiangsu Province (China, BK20130163), the 111 Project (B12018) and the University Graduate Practice Innovation Program of Jiangsu Province (SJZZ15_0151). The first author is grateful to her supervisor—Professor Feng Ding, and the main idea of this paper is from him and his books “System Identification—Multi-Innovation Identification Theory and Methods, Beijing: Science Press, 2016” and Ding [5, 6].
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Wang, F., Liu, Y. & Yang, E. Least Squares-Based Iterative Identification Methods for Linear-in-Parameters Systems Using the Decomposition Technique. Circuits Syst Signal Process 35, 3863–3881 (2016). https://doi.org/10.1007/s00034-015-0232-0
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DOI: https://doi.org/10.1007/s00034-015-0232-0