Design of FDI filter for an aircraft control system

Author

Szaszi, Istvan ; Kulcsar, Balazs ; Balas, Gary J. ; Bokor, Jozsef

Author_Institution

Dept. of Control & Transp. Autom., Budapest Univ. of Technol. & Econ., Hungary

Volume

5

fYear

2002

fDate

2002

Firstpage

4232

Abstract

This paper presents a fault detection and isolation (FDI) filter design to linearize longitudinal dynamics of a Boeing 747 series 100/200. The FDI filter design is based on a geometric approach which relies on the use of (C,A) invariant subspaces and provides conditions on separability and mutual detectability of the failures. In our case the fault detection filter is sensitive to elevator faults and pitch rate sensor faults. Typically, the FDI filter design approach is elaborated for an open loop model and applied in the closed loop. The robustness aspect of FDI is considered and the effect of closing the loop is shown in the nominal case as well as in the uncertain case. The FDI filter designed for aircraft control systems is analyzed for a nominal closed loop system in the presence of sensor noise.

Keywords

H^∞ control; aircraft control; closed loop systems; control system synthesis; fault diagnosis; filtering theory; frequency response; robust control; uncertain systems; Boeing 747 series 100/200; H_∞ synthesis; aircraft control system; closed loop; elevator fault sensitivity; fault detection isolation filter design; frequency response; geometric approach; invariant subspaces; longitudinal dynamics linearization; mutual failure detectability; open loop model; pitch rate sensor fault sensitivity; robustness; sensor noise; separability; uncertain case; Aerospace control; Air safety; Air traffic control; Aircraft; Control system synthesis; Control systems; Design automation; Fault detection; Filters; Sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2002. Proceedings of the 2002

ISSN

0743-1619

Print_ISBN

0-7803-7298-0

Type

conf

DOI

10.1109/ACC.2002.1024596

Filename

1024596