Fault detection and isolation in the NT-OMS/RCS

Author

Azam, Mohammad ; Pham, David ; Tu, Fang ; Pattipati, Krishna ; Patterson-Hine, Ann ; Wang, Lui

Author_Institution

Dept. of Electr. & Comput. Eng., Connecticut Univ., Storrs, CT, USA

Volume

5

fYear

2004

fDate

6-13 March 2004

Firstpage

2892

Abstract

In this paper, we consider the problem of test design for real-time fault detection and diagnosis in the Space Shuttle´s non-toxic orbital maneuvering system and reaction control system (NT-OMS/RCS). For demonstration purposes, we restrict our attention to the shaft section of the NT-OMS/RCS, which consists of 160 faults (each fault being either a leakage, blockage, igniter fault, or regulator fault) and 128 sensors. Using the proposed tests, we are able to uniquely isolate a large number of the faults of interest in the NT-OMS/RCS. Those that cannot be uniquely isolated can generally be resolved into small ambiguity groups and then uniquely isolated via manual/automated commands. Simulation of the NT-OMS/RCS under various fault conditions was conducted using the TRICK^® modeling software.

Keywords

aerospace control; aerospace simulation; aerospace testing; fault diagnosis; space vehicles; Space Shuttle; TRICK^® modeling software; fault detection; fault isolation; nontoxic orbital maneuvering system; reaction control system; shaft section; Aerospace safety; Aerospace testing; Control systems; Engines; Fault detection; Fault diagnosis; Mathematical model; NASA; Space shuttles; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace Conference, 2004. Proceedings. 2004 IEEE

ISSN

1095-323X

Print_ISBN

0-7803-8155-6

Type

conf

DOI

10.1109/AERO.2004.1368096

Filename

1368096