RESEARCH PAPERS: Gas Turbines: Controls and Diagnostics

Model Based Fuzzy Logic Sensor Fault Accommodation

[+] Author and Article Information
T. A. Healy, L. J. Kerr, L. J. Larkin

Pratt & Whitney, Propulsion Systems Analysis, MS 731-95, P.O. Box 109600, West Palm Beach, FL 33410-4669

J. Eng. Gas Turbines Power 120(3), 533-536 (Jul 01, 1998) (4 pages) doi:10.1115/1.2818179 History: Received March 07, 1997; Online November 19, 2007


Sensor in-range fault accommodation is a fundamental challenge of dual channel control systems in modern aircraft gas turbine engines. An on-board, real-time engine model can be used to provide an analytical third sensor channel that may be used to detect and isolate sensor faults. A fuzzy-logic-based accommodation approach is proposed that enhances the effectiveness of the analytical third channel in the control system’s fault isolation and accommodation scheme. Simulation studies show the fuzzy accommodation scheme to be superior to current accommodation techniques.

Copyright © 1998 by The American Society of Mechanical Engineers
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