Aircraft Cable Fault Diagnosis Based on Time-Frequency Reflection

SHI Xudong; PEI Heyan; JING Tao; WANG Liwen

Volume 39 Issue 1

Feb. 2010

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INFORMATION AND CONTROL > 2010 > 39(1): 77-81.

SHI Xudong, PEI Heyan, JING Tao, WANG Liwen. Aircraft Cable Fault Diagnosis Based on Time-Frequency Reflection[J]. INFORMATION AND CONTROL, 2010, 39(1): 77-81.

Citation:

SHI Xudong, PEI Heyan, JING Tao, WANG Liwen. Aircraft Cable Fault Diagnosis Based on Time-Frequency Reflection[J]. INFORMATION AND CONTROL, 2010, 39(1): 77-81.

Citation:

SHI Xudong, PEI Heyan, JING Tao, WANG Liwen. Aircraft Cable Fault Diagnosis Based on Time-Frequency Reflection[J]. INFORMATION AND CONTROL, 2010, 39(1): 77-81.

Aircraft Cable Fault Diagnosis Based on Time-Frequency Reflection

1.
Aeronautical Automation College, Civil Aviation University of China, Tianjin 300300, China
2.
Aviation Ground Support Equipments Research Base, Civil Aviation University of China, Tianjin 300300, China

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Received Date: July 14, 2009
Revised Date: October 29, 2009
Published Date: February 19, 2010

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Abstract

Abstract

An airplane cable faults diagnosis method based on time-frequency domain reflection is proposed to solve the problems of being difficult to diagnose part faults,serial faults and after-junction faults because of weak echo signal and serious decay in the time domain reflection method.The time-frequency domain reflection method can diagnose faults more easily and improve the hit rates.In addition,the threshold de-noising method based on wavelet decomposition is utilized to eliminate the interference of noise and reduce the false alarm rates.The feasibility is verified and the comparison with time domain reflection method is processed by experiments.The results show that the time-frequency domain reflection method is better than the time domain reflection method in the aspects of hit rates and false alarm rates.
- airplane cable,
- fault diagnosis,
- time-frequency reflection,
- wavelet de-noising

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