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Intelligent fault-tolerant algorithm with two-stage and feedback for integrated navigation federated filtering 被引量:6

Intelligent fault-tolerant algorithm with two-stage and feedback for integrated navigation federated filtering
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摘要 In order to take full advantage of federated filter in fault-tolerant design of integrated navigation system, the limitation of fault detection algorithm for gradual changing fault detection and the poor fault tolerance of global optimal fusion algorithm are the key problems to deal with. Based on theoretical analysis of the influencing factors of federated filtering fault tolerance, global fault-tolerant fusion algorithm and information sharing algorithm are proposed based on fuzzy assessment. It achieves intelligent fault-tolerant structure with two-stage and feedback, including real-time fault detection in sub-filters, and fault-tolerant fusion and information sharing in main filter. The simulation results demonstrate that the algorithm can effectively improve fault-tolerant ability and ensure relatively high positioning precision of integrated navigation system when a subsystem having gradual changing fault. In order to take full advantage of federated filter in fault-tolerant design of integrated navigation system, the limitation of fault detection algorithm for gradual changing fault detection and the poor fault tolerance of global optimal fusion algorithm are the key problems to deal with. Based on theoretical analysis of the influencing factors of federated filtering fault tolerance, global fault-tolerant fusion algorithm and information sharing algorithm are proposed based on fuzzy assessment. It achieves intelligent fault-tolerant structure with two-stage and feedback, including real-time fault detection in sub-filters, and fault-tolerant fusion and information sharing in main filter. The simulation results demonstrate that the algorithm can effectively improve fault-tolerant ability and ensure relatively high positioning precision of integrated navigation system when a subsystem having gradual changing fault.
出处 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第2期274-282,共9页 系统工程与电子技术(英文版)
基金 supported by the National Natural Science Foundationof China (60902055)
关键词 integrated navigation federated filter fuzzy assess-ment fault-tolerant fusion information sharing. integrated navigation, federated filter, fuzzy assess-ment, fault-tolerant fusion, information sharing.
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