Research of pre-estimating method on aircraft sudden fault

Abstract

Purpose

The purpose of this paper is to solve difficult estimation problem on aircraft sudden fault by proposing a new pre-estimating method according to the energy evolution degree of the sensitive parameters to estimate the sudden fault. The sudden fault affects seriously the flight safety of aircraft.

Design/methodology/approach

It is based on the dissipative structure theory, and the evolution process of energy parameters is utilized. First, the evolution key points of sudden fault are determined by the time-varying entropy of sensitive parameters and the frequency band energy distribution. Then, we can obtain the evolution degree of sample while the evolution key points import the logistic regression (LR) model, and one can establish the pre-estimation model by means of relevance vector machine (RVM). While the evolution feature vector imports the RVM pre-estimation model, one can pre-estimate the sudden fault of aircraft.

Findings

The simulation results showed that this method can not only track the evolution process of aircraft sudden fault but also estimate its evolution degree, and it has a higher pre-estimating accuracy.

Practical implications

It provides a new way to forecast the sudden fault and increase the security of aircraft.

Originality/value

This paper proposes a pre-estimating method on aircraft sudden fault. It is based on the dissipative structure theory and the energy-sensitive parameters of the sudden faults are used. This method can enhance the security of aircraft and increase the protective ability of sudden fault on aircraft.

Citation

Wang, Z., Han, Z. and Li, L. (2016), "Research of pre-estimating method on aircraft sudden fault", Aircraft Engineering and Aerospace Technology, Vol. 88 No. 1, pp. 197-202. https://doi.org/10.1108/AEAT-08-2013-0150