Bearing fault diagnosis method combining variable working condition calculation order tracking and spectral kurtosis
The invention discloses a bearing fault diagnosis method combining variable working condition calculation order tracking and spectral kurtosis. The bearing fault diagnosis method comprises the steps of: carrying out tree-shaped decomposition filtering on a rolling bearing vibration signal, calculati...
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| creator | QU SHIDONG CAI GUOJUAN FENG SHIJIE ZHANG CHONGYANG YAO XIAOYAN LIU CHUNWANG HUANG WEIDONG LIU YANG SHAN SONG |
| description | The invention discloses a bearing fault diagnosis method combining variable working condition calculation order tracking and spectral kurtosis. The bearing fault diagnosis method comprises the steps of: carrying out tree-shaped decomposition filtering on a rolling bearing vibration signal, calculating the spectral kurtosis, and drawing a spectral kurtosis graph to obtain a center frequency and anoptimal bandwidth of an optimal filtering bandwidth; carrying out band-pass filtering on the rolling bearing vibration signal, carrying out Hilbert transformation on the filtered signal, and carryingout envelope demodulation to obtain an envelope signal containing fault impact; setting a rotating speed pulse threshold value, acquiring a vibration signal pulse generation moment, solving an angulardomain time quadratic equation coefficient, acquiring an equal-angle sampling moment, carrying out interpolation fitting on the envelope signal, and acquiring an angular domain stable signal of whichthe transverse axis is an a |
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The bearing fault diagnosis method comprises the steps of: carrying out tree-shaped decomposition filtering on a rolling bearing vibration signal, calculating the spectral kurtosis, and drawing a spectral kurtosis graph to obtain a center frequency and anoptimal bandwidth of an optimal filtering bandwidth; carrying out band-pass filtering on the rolling bearing vibration signal, carrying out Hilbert transformation on the filtered signal, and carryingout envelope demodulation to obtain an envelope signal containing fault impact; setting a rotating speed pulse threshold value, acquiring a vibration signal pulse generation moment, solving an angulardomain time quadratic equation coefficient, acquiring an equal-angle sampling moment, carrying out interpolation fitting on the envelope signal, and acquiring an angular domain stable signal of whichthe transverse axis is an a</description><language>chi ; eng</language><subject>MEASURING ; PHYSICS ; TESTING ; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES ; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200317&DB=EPODOC&CC=CN&NR=110887663A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200317&DB=EPODOC&CC=CN&NR=110887663A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>QU SHIDONG</creatorcontrib><creatorcontrib>CAI GUOJUAN</creatorcontrib><creatorcontrib>FENG SHIJIE</creatorcontrib><creatorcontrib>ZHANG CHONGYANG</creatorcontrib><creatorcontrib>YAO XIAOYAN</creatorcontrib><creatorcontrib>LIU CHUNWANG</creatorcontrib><creatorcontrib>HUANG WEIDONG</creatorcontrib><creatorcontrib>LIU YANG</creatorcontrib><creatorcontrib>SHAN SONG</creatorcontrib><title>Bearing fault diagnosis method combining variable working condition calculation order tracking and spectral kurtosis</title><description>The invention discloses a bearing fault diagnosis method combining variable working condition calculation order tracking and spectral kurtosis. 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| subjects | MEASURING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR |
| title | Bearing fault diagnosis method combining variable working condition calculation order tracking and spectral kurtosis |
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