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A fault location strategy based on information fusion and CODAS algorithm under epistemic uncertainty

Duan Rongxing, Chen Li, He Jiejun, Huang Shujuan

Eksploatacja i Niezawodność

2022

Vol. 24, no. 3

478--488

Application of new technology in modern systems not only substantially improves the performance, but also presents a severe challenge to fault location of these systems. This paper presents a new fault location strategy for maintenance personnel to recover them based on information fusion and improved CODAS algorithm. Firstly, a fault tree is adopted to develop the failure model of a complex system, and failure probability of components is determined by expert evaluations to handle the uncertainty problem. Moreover, a fault tree is converted into an evidence network to obtain importance degrees, which are used to construct a diagnostic decision table together with the risk priority number. Additionally, these results are updated to optimize the maintenance process using sensor information. A novel dynamic location strategy is designed based on interval CODAS algorithm and optimal fault location strategy can be obtained. Finally, a real system is analyzed to demonstrate the feasibility of the proposed maintenance strategy.

Technology improving safety of crowdfunding platforms functioning in the context of the protection of the start-up investors in the financial and transport sectors

Polishchuk Volodymyr, Kelemen Miroslav, Kozuba Jarosław

Journal of KONBiN

2019

Vol. 49, iss. 1

313--330

The information technology models improving security functioning of crowdfunding platforms and advice on a new type of business were developed. The article solves the problem of safety of crowdfunding platform functioning based on developed models: rating assignment system of unified assessment crowdfunding platforms; startup projects assessment; startup projects risk assessment concerning their financing safety level and criminal law protection of investors against the financial fraud. The models are based on the correct usage of fuzzy logic and fuzzy set device to reveal the uncertainty of experts’ consideration that insures authenticity of scientific results.