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Analytical Redundancy Technology for Engine Reliability Improvement
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English
Abstract
The ARTERI concept for achieving engine control system fault detection, isolation, and accommodation is described. It uses analytical redundancy to improve system reliability in conjunction with or instead of hardware redundancy and can also be used as a diagnostic tool. The key elements of ARTERI include a real-time component level engine model for synthesizing sensor outputs, a component tracking filter for updating the model to match the actual engine, and a failure detection filter for detecting and isolating hard and soft system faults. Faults are accommodated by the use of model outputs in place of failed sensors and alternative operating schedules for minimizing performance degradation due to failed actuators. The design concept of each element is described and expected operating characteristics are discussed.
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Authors
Citation
Brown, H. and Vizzini, R., "Analytical Redundancy Technology for Engine Reliability Improvement," SAE Technical Paper 861725, 1986, https://doi.org/10.4271/861725.Also In
References
- Vizzini R.W. Toot P.D. “Full Authority Digital Electronic Control Application to a Variable Cycle Engine,” SAE 1980 Aerospace Congress Los Angeles, California October 13-15, 1980
- French M.W. “Development of a Compact Real-Time Turbofan Engine Dynamic Model,” SAE Paper 82-1401 Aerospace Congress and Exposition Anaheim, California October 1982
- Meserole J.S. “Detection Filters for Fault-Tolerant Control of Turbofan Engines,” PhD Thesis, Massachusetts Institute of Technology June 1981
- Gai E. Harrison J.V. Luppold R.H. “Reliability Analysis of Dual Redundant Engine Controller,” IEEE Transactions on Reliability 32 1 April 1983