Title :
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
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;
Conference_Titel :
American Control Conference, 2002. Proceedings of the 2002
Print_ISBN :
0-7803-7298-0
DOI :
10.1109/ACC.2002.1024596
