Devising a Procedure to form the Diagnostic Parameters for Locomotives using a Principal Components Analysis
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Technology Center, Kharkov, Ukraine
Abstract
ENG: Modern diagnostic systems are characterized by that
the flow of diagnostic information requires significant computational
resources to process. In order to improve the
reliability of the object to be diagnosed and reduce operating
costs, it is necessary to improve procedures for analyzing
diagnostic results. This paper suggests a procedure to
form the diagnostic features of locomotive nodes based on
the use of a principal components analysis. The proposed
approach is distinguished by a decrease in the dimensionality
of the input set of diagnostic features in order to select
the sets of interconnected diagnostic parameters. Based on
the selection of the sets of interconnected diagnostic features,
constructing new latent diagnostic parameters has
been proposed. A latent diagnostic parameter contains
information that combines data from several initial diagnostic
features. The result of the method is a set of latent
diagnostic parameters that do not correlate with each other
and reflect the behavior of the object to be diagnosed from
different technical points. The application of a sufficient
number of latent diagnostic parameters involved the scree
test method. This paper reports the results from using the
proposed approach for treating the results from diagnosing
the hydraulic transmissions in locomotives. The result
from applying the procedure has made it possible to propose
using three latent diagnostic parameters to assess the
technical condition of a locomotive’s hydraulic transmission
during bench tests. The suggested parameters contain
90 % of the original information and reflect losses in the
transmission, as well as the load at the input and output of
the transmission.
Description
B. Bodnar: ORCID 0000-0002-3591-4772, O. Ochkasov: ORCID 0000-0002-7719-7214
Keywords
principal components analysis, parameter informativeness, latent diagnostic parameter, hydraulic transmission, КЛ
Citation
Bodnar B., Ochkasov O. Devising a Procedure to form the iagnostic Parameters for Locomotives using a Principal Components Analysis. Eastern-European Journal of Enterprise Technologies. 2021. Vol. 2, Iss. 1 (110). P. 97–103. DOI: 10.15587/1729-4061.2021.230293.