NDLI: On line sensor fault detection, isolation and accommodation in tactical aerospace vehicle

Content Provider	IEEE Xplore Digital Library
Author	Pulak Halder Chaudhuri, S.K. Mukhopadhyay, S.
Copyright Year	2004
Abstract	This paper presents on line sensor fault detection, isolation (FDI) and the associated fault tolerant control (FTC) algorithm for a tactical aerospace vehicle. A study on the analytical redundancy and a sensor fault detection scheme (FDI ) into a flight control system has been performed for a tactical aerospace vehicle using the longitudinal model. There are various methods available in the academic literature to apply FDI and FTC schemes to control systems and some have already been applied to real applications. Among these, observer-based approaches have arisen as one of the most widespread. The basic ideas behind observer-based FDI schemes are the generation of residuals, and the use of an optimal threshold function to differentiate faults from disturbances. Generally, the residuals, also known as diagnostic signals, are generated from estimates of the system's measurements obtained by a Luenberger observer or a Kalman filter. The threshold function is then used to 'detect' the fault by separating the residuals from false faults and disturbances. The change in residual signal is used to detect and isolate the fault and corresponding fault tolerant control action is taken to arrest the failure of the aerospace vehicle. A closed-loop simulation with nonlinear 6-degree of freedom (6-DoF) model shows that the above FDI and FTC scheme will be able to reduce the probability of mission failure due to the fault in one of the sensors.
Sponsorship	IEEE Region 10
Starting Page	684
Ending Page	686
File Size	1928705
Page Count	3
File Format	PDF
ISBN	0780385608
DOI	10.1109/TENCON.2004.1415025
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-24
Publisher Place	Thailand
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault detection Aerospace control Electrical fault detection Control systems Aerospace safety Vehicle safety Fault tolerance Redundancy Vehicle detection Fault tolerant systems
Content Type	Text
Resource Type	Article

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