Title :
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
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;
Conference_Titel :
Aerospace Conference, 2004. Proceedings. 2004 IEEE
Print_ISBN :
0-7803-8155-6
DOI :
10.1109/AERO.2004.1368096
