Application for Analysis of the Multiple Coherence Function in Diagnostic Signal Separation Processes

Wądołowski, Mariusz; Pankiewicz, Jarosław; Markuszewski, Damian

doi:10.21008/j.0860-6897.2020.3.24

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Sensing technology and data interpretation in machine diagnosis and system condition monitoring are foundations of information collection on the current technical condition of a technical system. Most of the time these are topics of focus in a wide range of technical diagnostics [ 1 , 2 , 3 , 4 ] and medicine [ 5 , 6 , 7 ]. Therefore, system condition monitoring is a fundamental process for decision making protocols in all mechanical or biological systems.…”

Section: Introductionmentioning

confidence: 99%

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Burdzik

2023

Sensors

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The impact of transport-induced vibrations on people is a particularly important problem. Sudden or intensifying vibration phenomena of a local nature may compromise safety, especially in transport. The paper addresses the results of research on the impact of spring stiffness parameters on the propagation of vibrations in the vehicle structure using simple amplitude and frequency measures. The use of the developed method of selective multi-criteria analysis of frequency bands made it possible to compare the vibrations recorded in the vehicle with a new or worn coil spring. The results of the present study allow the development of a large data base in which all signals are classified by the exploitation parameters and location of the propagation of vibration in the vehicle. The most important findings and achievements of the presented study are the testing of actual suspension components with real damage under controlled conditions, the identification of the vibration propagation path from the wheel to the driver and passenger feet, the quantitative comparison of vibrations affecting humans in the vehicle (through the feet), and the frequency decomposition of vibration for selected bands. These findings improve the proper interpretation of the developed measures and, as a result, the difficulties in using this knowledge at the engineering level, for example, in the design and construction improvement stage. Therefore, innovation points and engineering significances are a method of selective multi-criteria analysis of frequency bands and have potential applications in diagnostics and the design of suspension systems and in terms of passengers’ comfort.

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Section: Introductionmentioning

confidence: 99%

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Burdzik

2023

Sensors

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“…González et al [7] studied the time domain multiple coherence method for the analysis of the transmission path. Wądołowski et al [8] used this method to separate the effective signals in the acquisition signal, in order to obtain the required and useful characteristic information.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis and analysis of electric power steering rattle noise based on multiple coherence method

Gong¹,

Li²,

Xia³

et al. 2022

Vib. proced.

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Electric power steering (EPS) system is becoming the primary source of Electric Vehicle (EV) noise due to absence of classic power train. The rattle noise produced by EPS, which is easily discernible when driving. Since the conventional subjective evaluation approach makes it difficult to identify the source, it is required to establish an objective way to solve such an issue. In this paper, the principle of multiple coherence method is first addressed analytically, and then is employed to analyze the vibration signal acquisition from EPS different points, meanwhile, combine with in-car sound signal, to accurately identify the specific location.

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Application for Analysis of the Multiple Coherence Function in Diagnostic Signal Separation Processes

Cited by 2 publications

References 8 publications

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Impact and Assessment of Suspension Stiffness on Vibration Propagation into Vehicle

Diagnosis and analysis of electric power steering rattle noise based on multiple coherence method

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