State monitoring method and system for aircraft flap control system

Abstract

The invention provides a state monitoring method and system for an aircraft flap control system. An equivalent dynamic model of the flap mechanical transmission system is constructed, and a new methodis provided for selecting airplane health monitoring characteristic parameters. An equivalent dynamic model and a mathematical model of the model are constructed by using a multi-degree-of-freedom method, so that a transfer function capable of reflecting main characteristics of the system is obtained. And a new value of an equivalent parameter in the equivalent dynamic model is calculated based on CAD model parameter selection and empirical formula, and a spring-damping-mass parameter of the flap equivalent model is identified. Factors influencing the health state of the system are searched for by analyzing the mechanism of the system, and the factors influencing the health state of the flap control system and parameters reflecting the health state are verified through simulation analysis. The state of the multi-degree-of-freedom aircraft flap control system is monitored based on the aircraft health characteristic parameters.

Description

technical field [0001] The invention relates to the technical field of aircraft state monitoring, in particular to a method and system for state monitoring of an aircraft flap control system. Background technique [0002] Aircraft health monitoring can carry out status monitoring, fault diagnosis and health management on the aircraft, and can detect possible use or safety problems of the aircraft in a timely manner, further evaluate the health status of the key systems of the aircraft, and make reasonable arrangements on the basis of predicting its development. Aircraft operation and maintenance activities to reduce unplanned maintenance time and improve aircraft safety and efficiency. Although the health monitoring and forecasting system has gradually begun to be applied, there is still a certain gap from engineering practicality. [0003] There are two existing methods for aircraft health monitoring. One is to use the integrated current sensor / driver network to obtain inf...

AI Technical Summary

Problems solved by technology

However, based on the method of identification and analysis of aircraft health characteristic parameters, since the aircraft flap control system is a multi-degree-of-freedom, it is impossible to effectively realize the identification model establishment and the selection of aircraft health characteristic parameters, so it has not been achieved in the state monitoring of aircraft flap operating systems. good application

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