Repair decision-making method of health state of airplane system

Abstract

The invention discloses a repair decision-making method of health state of an airplane system. The method includes steps of 1), calculating preventive repair threshold value uO and a predicting interval h of a target unit of an airplane system; 2), calculating the average rest life of the target unit at kh moment, wherein k is the frequency of preventive repair of the target unit within a certaintime scale; 3), when the average rest life of the target unit at kh moment is less than the preventive repair threshold value uO, performing preventive repair on the part; otherwise, not performing the preventive repair. The method can scientifically and reasonably confirm the preventive repair threshold value and the predicting interval; on the basis of guaranteeing the availability of the systemparts, the repair decision-making method can reduce the average repair cost of the system part, effectively solve the 'excessive repair' or 'under-repair' situation easily caused by preventive repairat a fixed time, and avoid the waste of repair resource.

Description

technical field [0001] The invention relates to the technical field of civil aircraft maintenance, in particular to a maintenance decision-making method for the health state of an aircraft system. Background technique [0002] With the rapid development of electronic technology, information technology and new materials, modern civil airliners tend to be larger, more complex, faster and more automated. The complexity of the aircraft system has also increased, and the coupling between the various components has become tighter. Coupled with the variability of the aircraft's working environment and tasks, this leads to certain coupling and randomness in aircraft failures. [0003] The current maintenance method is a passive maintenance mode, which often leads to insufficient maintenance, excessive maintenance, and unreasonable allocation of maintenance resources. In order to avoid the above phenomena, it is necessary to build a maintenance decision-making technology based on t...

AI Technical Summary

Problems solved by technology

Coupled with the variability of the aircraft's working environment and tasks, this leads to certain coupling and randomness in aircraft failures

[0003] The current maintenance method is a passive maintenance mode, which often leads to insufficient maintenance, excessive maintenance, and unreasonable allocation of maintenance resources

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