CUICanli, HAN Sijie, ZHANG Yinan, et al. Reliability Evaluation Method Based on Physical Equivalent Prior and Dynamic Conflict Adaptive Deviation Correction for of Underwater Vehicle[J/OL]. ACTA ARMAMENTARII, 2026, 1-12.
DOI:
CUICanli, HAN Sijie, ZHANG Yinan, et al. Reliability Evaluation Method Based on Physical Equivalent Prior and Dynamic Conflict Adaptive Deviation Correction for of Underwater Vehicle[J/OL]. ACTA ARMAMENTARII, 2026, 1-12.DOI: 10.12382/bgxb.2026.0261. CSTR: XXXXX.XX.XXX.2026.0261.
Reliability Evaluation Method Based on Physical Equivalent Prior and Dynamic Conflict Adaptive Deviation Correction for of Underwater Vehicle
A dynamic Bayesian evaluation method based on KL divergence adaptive measure and multi-level network aggregation is proposed to solve the problems of high cost and low confidence in the reliability evaluation of complex products such as underwater vehicles. Firstly, a physical equivalent mapping model of environmental stress profile and Miner linear fatigue damage theory is established, and the large-scale simulation and ground test data are transformed into system-level prior information. Secondly, the Kullback-Leibler (KL) divergence is introduced to construct a conflict detection mechanism between the measured data and prior distribution, and an adaptive reduction factor is designed based on the double gamma function, which effectively solves the evaluation bias problem of "prior submerging measured data" in cases of the extremely small samples. Finally, a multi-level aggregation network is constructed using the reliability block diagram (RBD), and the uncertainty transfer and the reconstruction of posterior probability distribution from a subsystem to the whole system are realized through Monte Carlo simulation (MCS). Example analysis shows that this method can automatically identify the multi-source conflicts in the extreme scenario where the actual navigation samples are only 4 times and there are failures. Compared with the traditional Bayesian method, the proposed method can offer more accurate evaluation results that better reflect the measured fault feedback, and effectively narrows the confidence interval, which provides scientific quantitative support for the identification and decision-making of high-value underwater vehicles.
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