Analytical redundancy reconstruction and redundancy management for singular fault of normal accelerometer in FBW system

Author

Wu Jian ; Zhang Kun ; Chen Lin ; Jin Bo

Author_Institution

650 Res. Inst., Hongdu Aviation Ind. Group, Nanchang, China

fYear

2014

fDate

8-10 Aug. 2014

Firstpage

120

Lastpage

123

Abstract

A research is made here for analytical redundancy reconstruction and redundancy management of the singular fault of normal accelerometer in fly-by-wire (FBW) system. Firstly by the means of model monitoring, the analytical redundancy of the normal accelerometer signal is reconstructed using hydrostatic dynamic pressure, pitch angular velocity, attack angle. Then the singular fault phenomenon during redundancy voting for quadruplex accelerometers is analyzed. The modified redundancy voting method is systematically provided with analytical redundancy to be the supplementary. Then the reliability of calculation models before and after improvement is given. Finally the analytical redundancy signals are verified comparison with measurement results and the reliability calculation before and after the improvement of redundancy voting are provided.

Keywords

accelerometers; aircraft control; fault diagnosis; hydrostatics; redundancy; reliability; signal reconstruction; FBW system; analytical redundancy reconstruction; attack angle; fly-by-wire system; hydrostatic dynamic pressure; model monitoring; modified redundancy voting method; normal accelerometer; pitch angular velocity; quadruplex accelerometer; redundancy management; reliability calculation; singular fault phenomenon; Acceleration; Accelerometers; Aerospace control; Analytical models; Monitoring; Redundancy; Accelerometer; Analytical Redundancy; FBW System; Redundancy Management; Singular Fault;

fLanguage

English

Publisher

ieee

Conference_Titel

Guidance, Navigation and Control Conference (CGNCC), 2014 IEEE Chinese

Conference_Location

Yantai

Print_ISBN

978-1-4799-4700-3

Type

conf

DOI

10.1109/CGNCC.2014.7007227

Filename

7007227