Control analysis method based on improved FMEA

Abstract

The invention provides a control analysis method based on an improved FMEA, thereby effectively improving the accuracy of the risk assessment and the credibility of the result analysis and promoting application of the intelligent manufacturing technology. The method comprises: M1, determining a to-be-analyzed object; M2, establishing a mathematical model for risk assessment; to be specific, defining a classification standard of a failure event, that is, a disturbance factor, affecting the to-be-analyzed object, constructing a classification frame of the to-be-analyzed object by using a tree network structure, calculating a risk assessment value by introducing a risk vector and using an operation mode of a vector die, and analyzing and determining a disturbance factor risk and an influenceon the analyzed object by combing a three-dimensional vector diagram and with the risk assessment value ranked by a data statistical method; and M3, according to the analysis and determination result,taking preventive measures against the corresponding disturbance factor and controlling or reducing the risk.

Description

technical field [0001] The invention relates to the technical field of intelligent manufacturing, in particular to a control analysis method based on improved FMEA. Background technique [0002] In industrial production, the design or manufacturing process of a product may fail or fail in many different forms, resulting in the failure of the product to meet the required functions, and in severe cases, it may cause production stoppage or major production accidents; failure mode and result analysis, referred to as FMEA (Failure Mode and Effects Analysis), that is, in the product design stage or manufacturing process stage, analyzes the subsystems, parts, production processes and other objects that make up the product, finds out potential failure modes and analyzes possible results, It is a preventive control analysis method that evaluates its risks, thereby taking necessary measures in advance, improving product quality and reliability, and reducing losses caused by subsequent...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the shortcomings of the traditional FMEA control analysis method, such as inaccurate risk assessment, poor result analysis reliability, and limiting the application of intelligent manufacturing technology, the present invention provides a control analysis method based on improved FMEA, which can effectively improve the accuracy of risk assessment And the credibility of the result analysis is conducive to the application of intelligent manufacturing technology

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