Multifractional and long-range dependent characteristics for remaining useful life prediction of cracking gas compressor

Song, Wanqing; Duan, Shouwu; Zio, Enrico; Kudreyko, Aleksey

doi:10.1016/j.ress.2022.108630

Cited by 13 publications

(1 citation statement)

References 30 publications

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“…The multifractional Brownian motion is derived by changing the constant Hurst exponent in the FBM into a variable function [ 30 ]. The linear multifractional Lévy stable motion is utilized to derive a RUL prediction method in [ 31 ]. The Hurst exponent in the model varies.…”

Section: Introductionmentioning

confidence: 99%

Multi-Fractal Weibull Adaptive Model for the Remaining Useful Life Prediction of Electric Vehicle Lithium Batteries

Deng

Gao

Chen

et al. 2023

Entropy

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In this paper, an adaptive remaining useful life prediction model is proposed for electric vehicle lithium batteries. Capacity degradation of the electric car lithium batteries is modeled by the multi-fractal Weibull motion. The varying degree of long-range dependence and the 1/f characteristics in the frequency domain are also analyzed. The age and state-dependent degradation model is derived, with the associated adaptive drift and diffusion coefficients. The adaptive mechanism considers the quantitative relations between the drift and diffusion coefficients. The unit-to-unit variability is considered a random variable. To facilitate the application, the convergence of the RUL prediction model is proved. Replacement of the lithium battery in the electric car is recommended according to the remaining useful life prediction results. The effectiveness of the proposed model is shown in the case study.

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Section: Introductionmentioning

confidence: 99%