A Wavelet Based Multiscale Weighted Permutation Entropy Method for Sensor Fault Feature Extraction and Identification

<div>The average WMWPE of 120 sensor signals after wavelet decomposition. (a) Low frequency-level 3. (b) High frequency-level 1. (c) High frequency-level 2. (d) High frequency-level 3.</div>

Journal of Sensors

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Figure 6

Figure 6: A Wavelet Based Multiscale Weighted Permutation Entropy Method for Sensor Fault Feature Extraction and Identification 