Adaptive Remaining Useful Life Prediction Method for Devices With Random Failure Threshold
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更新:2025-04-07 16:01:16 浏览:24次
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摘要
For nonlinear stochastic degraded devices in practical engineering, existing methods have overlooked the variability of adaptive drift as well as the impact of random failure threshold on remaining useful life (RUL) prediction. In this paper, we propose an adaptive RUL prediction method for nonlinear degraded devices with random failure threshold by utilizing the adaptive Wiener process. Firstly, a nonlinear degradation model incorporating adaptive drift is developed based on diffusion motion. The RUL life distribution, defined by the first hitting time, is derived while accounting for the impact of random failure threshold. Subsequently, the parameters of the degradation model and the distribution of random failure threshold are estimated offline based on historical monitoring data. The Kalman filter is utilized to dynamically update these estimation model parameters. Finally, the effectiveness of the proposed method is validated through case study of gyroscopes.
关键词
Remaining useful life (RUL),nonlinear,adaptive Wiener process,random failure threshold
稿件作者
青 董
火箭军工程大学
昌华 胡
火箭军工程大学
党波 杜
火箭军工程大学
迦陵 张
火箭军工程大学
洪 裴
火箭军工程大学
泽明 张
火箭军工程大学
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