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To purify axis trace of turbine generator units, a novel approach was proposed based on the generalized morphological filter cascaded by different structure elements. Due to statistic bias of morphological filter, the output of open-closing filter is relatively small, but that of close-opening filter is contrary. Therefore, adaptive approach was employed to modify weights to realize the combined morphological...
Based on morphological undecimated wavelet decomposition (MUWD), a novel method was proposed to extract rolling element bearing fault feature. MUWD possesses both the characteristic of morphological filter in morphology and multi-resolution in wavelet transform. Signal length was maintained invariable and information loss could be avoided in MUWD. Multi-scale MUWD was developed based on the characteristic...
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