RESEARCH ON IMPACT FEATURE DETECTION OF DIESEL ENGINE CYLINDER BASED ON MORPHOLOGICAL FILTERING
RESEARCH ON IMPACT FEATURE DETECTION OF DIESEL ENGINE CYLINDER BASED ON MORPHOLOGICAL FILTERING
- Author(s): M. Wang 1 ; G. Qin 1 ; Y. Liao 1
- DOI: 10.1049/icp.2021.1292
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- Author(s): M. Wang 1 ; G. Qin 1 ; Y. Liao 1
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View affiliations
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Affiliations:
1:
Hunan International Economics University , Changsha , China
Source:
The 8th International Symposium on Test Automation & Instrumentation (ISTAI 2020),
2021
p.
164 – 169
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Affiliations:
1:
Hunan International Economics University , Changsha , China
- Conference: The 8th International Symposium on Test Automation & Instrumentation (ISTAI 2020)
- DOI: 10.1049/icp.2021.1292
- ISBN: 978-1-83953-506-2
- Location: Online Conference
- Conference date: 28-29 November 2020
- Format: PDF
It is difficult to detect impact features of cylinder because the vibration signal of marine diesel engine cylinder head is coupled and overlapped caused by noise. The method of detecting impact features of diesel engine cylinder based on morphology filtering is studied. Firstly, based on the analysis of the time sequence and noise of the cylinder head vibration impact with its influence on the detection of the impact characteristics in the working cycle, a diesel engine cylinder based on morphological filtering is proposed Secondly, according to the characteristics of cylinder head surface vibration signal, the selection of structural elements is studied,based on which an adaptive generalized morphological filter construction method based on gradient method is proposed. Finally, according to the cylinder impact characteristic detection process, the adaptive generalized morphological filter is applied to a certain inline 8-cylinder diesel engine The application results show that the adaptive generalized morphological filter has a good ability of anti aliasing and anti noise interference, which can effectively solve the problem of cylinder impact feature detection.
Inspec keywords: noise abatement; engine cylinders; feature extraction; vibrational signal processing; vibrations; impact (mechanical); filtering theory; gradient methods; marine propulsion; diesel engines
Subjects: Engines; Civil and mechanical engineering computing; Acoustic properties (mechanical engineering); Optimisation techniques; Ballistics and mechanical impact (mechanical engineering); Mechanical engineering applications of IT; Optimisation; Digital signal processing; Vibrations and shock waves (mechanical engineering); Filtering methods in signal processing; Optimisation techniques; Mechanical components