|Table of Contents|

Research on liquid rocket engine fault diagnosis algorithm according to vibration detection(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2012年06期
Page:
62-69
Research Field:
测控与试验
Publishing date:

Info

Title:
Research on liquid rocket engine fault diagnosis algorithm according to vibration detection
Author(s):
CHEN Hai-feng;  ZHAO Zheng-she;  ZHANG Shao-bo
Xi’an Aerospace Propulsion Test Technique Institute, Xi’an 710100, China
Keywords:
vibration detectionfault diagnosisalgorithm
PACS:
V414-34
DOI:
-
Abstract:
A rocket engine fault diagnosis algorithm based on the vibration signal detection is proposed in this paper. The characteristics of vibration signal as the engine fault occurs are analysed. The selection of fault diagnosis indexes, vibration signal pretreatment, feature extraction, state identification and diagnosis decision are introduced respectively in the scheme. The algorithm that adopts the envelope curve method of amplitude and the vibration frequency parameters to diagnose the engine fault was studied. The engine hot test verified the correctness of the algorithm, which adopts the detection method of rocket engine vibration signal to judge the engine fault.

References:

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