期刊
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
卷 99, 期 -, 页码 886-920出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2017.06.032
关键词
Joint input-state estimation; Parameter estimation; Unknown input; Minimum variance unbiased estimation; Unscented transform; Direct feedthrough
This paper proposes a joint input-state estimation technique that can estimate unknown inputs, states and parameters of dynamic systems with direct feedthrough. The estimation is performed in a minimum variance unbiased manner, based on measurements from the dynamic system. This paper also presents a novel unscented minimum variance unbiased (UMVU) estimation scheme to realize the proposed estimator via unscented transform. Five UMVU variants are implemented and applied in the numerical study. The results have shown successful estimation of unknown inputs and states, and accurate identification of unknown system parameters. The characteristics and performance of the five UMVU variants are also demonstrated through the comparison of the results. (C) 2017 Elsevier Ltd. All rights reserved.
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