Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Three-dimensional instantaneous orbit map for rotor-bearing system based
  on a novel multivariate complex variational mode decomposition algorithm   Full spectrum and holospectrum are homogenous information fusion technology
developed for the fault diagnosis of rotating machinery, which is extensively
exploited in the analysis of the orbits of rotor-bearing systems. However, they
are not adapted for non-stationary signals, nor can they be used for fusion
analysis of vibrations of multiple bearing sections. By drawing inspiration
from the multivariate variational mode decomposition (MVMD) and the
complex-valued signal decomposition, we propose a method called multivariate
complex variational mode decomposition (MCVMD). It can simultaneously extract
the forward and backward components of multiple bearing sections and realize
non-stationary complex signal decomposition of multiple bearing sections of the
rotor. To achieve the visualization goal of condition monitoring, we propose
the three-dimensional instantaneous orbit map (3D-IOM). It enables more
features of shaft vibration of a rotor system to be displayed and offers a new
way for the fusion analysis of vibration signals of multiple bearing sections
of rotating machinery. Furthermore, making the most of the joint information,
we also provide a high-resolution time-full spectrum (Time-FS) to display the
forward and backward frequency components of multiple bearing sections. The
effectiveness of the proposed method through both the simulated experiment and
the real-life complex-valued signals is demonstrated in this paper.

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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn