Prognostics and health management (PHM) system for single-level aircraft structure and implementation method

Abstract

The invention discloses a prognostics and health management (PHM) system for a single-level aircraft structure and an implementation method. The PHM system for the aircraft structure consists of an onboard PHM system and a ground PHM system. A PHM regional manager for the aircraft structure can effectively communicate with each PHM member-level system of the structure, drives the corresponding member-level systems to finish corresponding PHM tasks, receives PHM data information from the member-level systems, and stores, files and displays the PHM data information. A database driving module divides a data information stream of the whole PHM system into the following branches, and finally converges the branches into a PHM database. When historical PHM data are required by a health status evaluation module and a health status prediction module, the database driving module transmits a request to the PHM database, and transmits corresponding data to the corresponding modules. When the maintenance history of the structure is required by the generation of a decision, the database driving module transmits a request to the PHM database, and transmits corresponding historical decision data to a decision generation module.

Description

technical field [0001] The invention relates to a single-level aircraft structure PHM system and a realization method. Background technique [0002] Aircraft is a complex mechanical system with high value and maintenance costs. Aircraft failures and accidents often cause varying degrees of economic losses and social impacts, and maintenance costs account for a large proportion of the cost of aircraft service. The application of aircraft health monitoring and management can realize the online or offline status monitoring of the aircraft system, timely forecast the potential failures of the system, reduce system accidents, improve the safety of system operation, and perform maintenance according to the actual status of the system. This reduces maintenance costs. Therefore, the health monitoring and management technology of aircraft is of great significance. It has important application value for preventing major accidents, improving system safety, reducing economic losses, re...

AI Technical Summary

Problems solved by technology

[0005] 2. A large number of sensors will be used when monitoring multiple parts of the structure, which will inevitably bring additional additional weight to the aircraft

[0006] 3. Some structural parameters, such as the strain generated by the structure under load, the impact received during the flight, etc., must be obtained online under the working state of the structure

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