An Integrated Health Condition Detection Method for Rotating Machinery Using Refined Composite Multivariate Multiscale Amplitude-Aware Permutation Entropy

<div>Illustration of refined composite coarse-grained approach for multivariate data with scale factor 2. (a) First coarse-grained time series; (b) second coarse-grained time series.</div>

Mathematical Problems in Engineering

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Figure 1: An Integrated Health Condition Detection Method for Rotating Machinery Using Refined Composite Multivariate Multiscale Amplitude-Aware Permutation Entropy 

Figure 1 | An Integrated Health Condition Detection Method for Rotating Machinery Using Refined Composite Multivariate Multiscale Amplitude-Aware Permutation Entropy 