NDLI: Fault Detection, Isolation and Reconfiguration in Presence of Incipient Sensor Faults in an Electromechanical Flight Control Actuation System

Content Provider	IEEE Xplore Digital Library
Author	Jayakumar, M. Das, B.B.
Copyright Year	2006
Description	Author affiliation: Vikram Sarabhai Space Centre, Thiruvananthapuram (Jayakumar, M.; Das, B.B.)
Abstract	This paper presents a scheme for the detection and isolation of incipient sensor faults in a flight control actuation system. The system considered here is a practical system, which is an electromechanical flight actuator, based on a DC torque motor. The scheme utilizes the analytical redundancy that exists in the system between the linear actuator position, motor shaft velocity and motor current for detection and isolation of the incipient sensor faults. The scheme is based on a single Luenberger observer, which is driven by the motor shaft velocity sensor. Residuals that can indicate various types of faults are generated from the estimate of the sensor output provided by the Luenberger observer. The capability of the residuals, to detect and isolate incipient faults in the sensors, such as bias errors and scale factor errors is demonstrated through simulations. In the event of fault in the position sensor, real time reconfiguration using an estimate of the position from the observer is used for continued operation of the system. The robustness of the fault detection scheme to parameter variations is also examined.
Starting Page	92
Ending Page	97
File Size	3507489
Page Count	6
File Format	PDF
ISBN	1424407257
DOI	10.1109/ICIT.2006.372201
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-15
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault detection Electromechanical sensors Sensor systems Aerospace control Shafts Torque DC motors Redundancy Hydraulic actuators Real time systems
Content Type	Text
Resource Type	Article

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