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Modified Subspace Identification for Periodically Non-uniformly Sampled Systems by Using the Lifting Technique

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Abstract

This paper studies identification problems for a class of multirate systems—non-uniformly sampled systems. The lifting technique is employed to handle the non-uniformly sampled input and output data, a lifted state-space model is derived to represent the non-uniform discrete-time systems, and a novel subspace identification method is proposed to deal with the casuality constraints in the lifted model. Simulation results show that the algorithm is effective.

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Acknowledgements

This work is supported by National Natural Science Foundation of China (No. 61203028) and Natural Science Fund for Colleges and Universities in Jiangsu Province (No. 12KJB120005).

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Correspondence to Jie Ding.

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Ding, J., Lin, J. Modified Subspace Identification for Periodically Non-uniformly Sampled Systems by Using the Lifting Technique. Circuits Syst Signal Process 33, 1439–1449 (2014). https://doi.org/10.1007/s00034-013-9704-2

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