NDLI: Diagnosis of Incipient Sensor Faults in a Flight Control Actuation System

Content Provider	IEEE Xplore Digital Library
Author	Jayakumar, M. Das, B.B.
Copyright Year	2006
Description	Author affiliation: ISRO, Vikram Sarabhai Space Centre, Trivandrum (Jayakumar, M.; Das, B.B.)
Abstract	This paper presents a scheme for fault diagnosis in a flight control actuation system. The electromechanical control actuator considered here is based on a DC torque motor. The scheme utilizes the analytical redundancy that exists in the system between the linear actuator position, motor shaft angular velocity and motor current for diagnosis of incipient sensor faults in the system. Fault diagnosis is done using a single Kalman filter, which is driven by the motor shaft velocity sensor. Diagnosis of bias and scale factor faults in the position and current sensor is carried out using structured residuals that are generated using the Kalman filter estimates. Bias and scale factor errors in the velocity sensor are detected using the statistical properties of the innovation sequence of the Kalman filter. In the event of fault in the position sensor, real time reconfiguration using an estimate of the position from the Kalman filter is used for continued operation of the system. Robustness of the scheme to parameter variations is also examined
Starting Page	3423
Ending Page	3428
File Size	6075766
Page Count	6
File Format	PDF
ISBN	8995003847
DOI	10.1109/SICE.2006.315126
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-18
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	The Institute of Control, Automation and Systems
Subject Keyword	Fault diagnosis Sensor systems Aerospace control Electromechanical sensors Shafts Torque control DC motors Redundancy Hydraulic actuators Angular velocity Kalman filter DC motor Actuator
Content Type	Text
Resource Type	Article

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