Quay crane failure mode risk assessment method based on fuzzy grey correlation

Abstract

The invention relates to the technical field of port and wharf hoisting equipment, and provides a quay crane failure mode risk assessment method based on fuzzy grey correlation. The method comprises the following steps: establishing a quay crane failure mode evaluation group, and determining a failure mode, and a fuzzy comment set and a fuzzy weight set of risk factors; aggregating the evaluationinformation of the risk factor, and determining a subjective weight; defuzzifying the collected risk factor fuzzy information into a clear value; establishing a normalized matrix of risk factor information; performing deblurring and normalization processing on the subjective weight; determining a grey correlation coefficient of the quay crane failure mode to the reference sequence based on the risk factor normalization matrix; calculating an objective weight of the risk factor by using an entropy weight method; determining a combination weight based on an improved game theory combination weighting method; and determining a risk priority sequence of the quay crane failure mode according to the grey correlation degree, and determining a risk sequence of the quay crane failure mode. The invention has guiding significance for quay crane failure mode risk assessment.

Description

technical field [0001] The invention relates to the technical field of port and wharf lifting equipment, in particular to a fuzzy gray correlation-based risk assessment method for failure modes of quay cranes. Background technique [0002] With the emergence of large container ships, shore-to-shore container cranes (quay cranes) are gradually developing in the direction of heavy-duty, professional, and green, and at the same time, higher requirements are put forward for the safety management of quay cranes. [0003] Studying the failure mode risk decision-making method of the working mechanism and metal structure of the quay crane is of great significance to ensure the safe production, maintenance and management of the quay crane, and improve the economic benefits of the port terminal. [0004] The literature "Research on the health monitoring technology of shore-side container cranes based on FMEA" ([J] Lifting and Transportation Machinery. 2019 (10)) applies the traditiona...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of existing quay crane failure mode decision-making methods, the present invention provides a quay crane failure mode evaluation method based on fuzzy gray correlation, which solves different risk factors such as occurrence (O), severity (S) and detection ( D) Combination weighting problem, taking into account the advantages of subjective weight and objective weight

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