Diesel Engine Fault Diagnosis and Denoising Disposal of the Vibration Signals Based on EMD Method

Tan, Jiqiu; Min, Jie; Wu, Xin

doi:10.1109/icdma.2013.115

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2019

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“…Results showed that the proposed method has excellent performance in quality inspection in the presence of abnormal clearance between the engine crankshaft and connecting rod. Tan et al [20] used the EMD method to remove diesel engine vibration signals. Test results indicated that the true vibration signal from the diesel engine could be obtained by reconstructing the remaining IMF components.…”

Section: Introductionmentioning

confidence: 99%

Separation Method of Impulsive Fault Component for Gasoline Engine Based on Acoustic Signal Analysis

Ning

Jiang

Sun

et al. 2019

Shock and Vibration

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This paper presents a developed dislocation superimposed method (DSM) for automatically extracting the component of impulsive signals from abnormal noise signals of an engine at a single speed range on the basis of the initial DSM. This method consists of three steps: using a correlation analysis to select an appropriate starting superposition point, superimposing abnormal sound signals to improve the signal-to-noise ratio, and intercepting superimposed signals to separate the fault component. Experimental results show that the developed DSM can effectively extract the fault characteristics of cylinder knocking and connecting rod bearing knocking. The developed approach can be applied to separate the fault characteristics of other types of rotating machines.

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Section: Introductionmentioning

confidence: 99%