Liquid Rocket Engine Fault Diagnosis Method Based on the Integration of Qualitative and Quantitative Knowledge

LIU Hong gang; WU Jian jun; CHEN Qi zhi

Volume 17 Issue 3

Jul. 2002

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Article Navigation > Journal of Aerospace Power > 2002 > 17(3): 377-380

LIU Hong gang, WU Jian jun, CHEN Qi zhi. Liquid Rocket Engine Fault Diagnosis Method Based on the Integration of Qualitative and Quantitative Knowledge[J]. Journal of Aerospace Power, 2002, 17(3): 377-380.

Citation:

LIU Hong gang, WU Jian jun, CHEN Qi zhi. Liquid Rocket Engine Fault Diagnosis Method Based on the Integration of Qualitative and Quantitative Knowledge[J]. Journal of Aerospace Power, 2002, 17(3): 377-380.

Citation:

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Liquid Rocket Engine Fault Diagnosis Method Based on the Integration of Qualitative and Quantitative Knowledge

National University of Defence Technology,Changsha410073,China

Received Date: 2001-05-21
Rev Recd Date: 2001-10-24
Publish Date: 2002-07-28

Abstract

Abstract

This paper first analyzes the SDG method with a view of knowledge description and management,then presents an improved way according to the characteristics of the liquid rocket engine systems.That is,by constructing the SDG containing only the measured variables,the fault modes are diagnosed in advance,and then the modes that can not be distinguished are diagnosed by adding adequate quantitative information.In addition,multi fault mode diagnosis method is proposed in this paper.The test result shows that the method is valid.
- SDG,
- fault diagnosis,
- liquid rocket engine