|Table of Contents|

The fault real-time monitoring method for engine based on RMS value of characteristic frequency band(PDF)

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

Issue:
2019年04期
Page:
74-78
Research Field:
测控与试验
Publishing date:

Info

Title:
The fault real-time monitoring method for engine based on RMS value of characteristic frequency band
Author(s):
SUN Baihong1; TIAN Chuan2
(1.Xi’an Aerospace Propulsion Institute,Xi’an 710100,China;2.Xi’an Military Representative Bureau of Air Force Equipment,Xi’an 710100,China)
Keywords:
characteristic frequency band;  RMS value;  fault diagnosis;  real-time monitoring
PACS:
V433
DOI:
-
Abstract:
The analysis of test data plays an important role in engine fault diagnosis.Several faults,such as cracking of weld seam and fuel leakage,have occurred in key parts of an engine during hot test.According to the signal characteristics of different stages of liquid rocket engine test,the processing and analysis methods of test signal were given,and the vibration signals of 16 tests of this type engine were processed,analyzed and compared.The different characteristics of the normal and unnormal tests dada were obtained and a method of engine fault identification based on RMS(Root Mean Square)value of the characteristic band was proposed.This method can be used in fault real-time monitoring for engine tests,which is useful for ensuring safety of tested engine and preventing catactrophic consequnce during hot-tests.

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Last Update: 2019-08-31