Risk assessment method based on fuzzy matrix and analytic hierarchy process

Abstract

The invention discloses a risk assessment method based on a fuzzy matrix and an analytic hierarchy process. The risk assessment method based on the fuzzy matrix and the analytic hierarchy process comprises the steps that a plurality of evaluation indexes are set to generate an evaluation index domain; a plurality of evaluation scales are set to generate an evaluation scale domain, and each evaluation scale corresponds to a scale fuzzy subset; the membership of a dangerous source for each scale fuzzy subset is calculated, and a membership matrix is constructed; weight vectors of the evaluation indexes are calculated; a fuzzy comprehensive evaluation result vector of the dangerous source is synthesized; a risk assessment value is calculated; a risk value is calculated, and the risk condition of the dangerous source is judged according to a risk matrix and the risk value. Through the application of the fuzzy matrix and the analytic hierarchy process in risk assessment, the risk assessment method is used for analyzing various undetermined factors and indexes in the risk assessment process; first-scale indexes and second-scale indexes are set for evaluation from multiple aspects, so that analysis is more comprehensive and a danger value of possibility and a danger value of severity are formed; curving of a risky area chart guarantees stable risk conditions of the dangerous source.

Description

Technical field [0001] The invention relates to the field of aviation management, in particular to a risk assessment method based on fuzzy matrix analytic hierarchy process. Background technique [0002] In air traffic management, the factors affecting risk are usually uncertain. In the process of risk assessment, the nature and activities of many influencing factors cannot be quantitatively described by numbers, and the results cannot be judged by a single criterion. Therefore, fuzzy mathematical methods are often used for processing. [0003] The American scholar L.A. Zadeth first proposed the concept of fuzzy set in 1965, and established a model of fuzzy behavior and activity. Fuzzy mathematics has shifted from the basis of binary logic to continuous logic, turning the absolute "is" and "not" into more flexible things, and using strict mathematical methods to deal with fuzzy phenomena. [0004] In addition, Analytic Hierarchy Process (AHP) is also a commonly used method. It is a...

AI Technical Summary

Problems solved by technology

However, the LEC risk assessment method is based on empirical judgment to a certain extent in the division of hazard levels, and its application has its limitations, and it is a partial assessment of operations, so it cannot be generally applied

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