{"id":"https://openalex.org/W2944236820","doi":"https://doi.org/10.3390/e21050476","title":"Fault Feature Extraction of Hydraulic Pumps Based on Symplectic Geometry Mode Decomposition and Power Spectral Entropy","display_name":"Fault Feature Extraction of Hydraulic Pumps Based on Symplectic Geometry Mode Decomposition and Power Spectral Entropy","publication_year":2019,"publication_date":"2019-05-07","ids":{"openalex":"https://openalex.org/W2944236820","doi":"https://doi.org/10.3390/e21050476","mag":"2944236820","pmid":"https://pubmed.ncbi.nlm.nih.gov/33267190"},"language":"en","primary_location":{"id":"doi:10.3390/e21050476","is_oa":true,"landing_page_url":"https://doi.org/10.3390/e21050476","pdf_url":"https://www.mdpi.com/1099-4300/21/5/476/pdf?version=1557221235","source":{"id":"https://openalex.org/S195231649","display_name":"Entropy","issn_l":"1099-4300","issn":["1099-4300"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Entropy","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1099-4300/21/5/476/pdf?version=1557221235","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100626164","display_name":"Zhi Zheng","orcid":"https://orcid.org/0000-0003-1454-7042"},"institutions":[{"id":"https://openalex.org/I137506752","display_name":"North China University of Science and Technology","ror":"https://ror.org/04z4wmb81","country_code":"CN","type":"education","lineage":["https://openalex.org/I137506752"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhi Zheng","raw_affiliation_strings":["College of Mechanical Engineering, North China University of Science and Technology, Tangshan 063210, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Mechanical Engineering, North China University of Science and Technology, Tangshan 063210, China","institution_ids":["https://openalex.org/I137506752"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006610668","display_name":"Ge Xin","orcid":"https://orcid.org/0000-0002-3308-0014"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Ge Xin","raw_affiliation_strings":["Beijing Research Center of Urban Traffic Information Sensing and Service Technologies, Beijing Jiaotong University, Beijing 100044, China","School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China"],"raw_orcid":"https://orcid.org/0000-0002-3308-0014","affiliations":[{"raw_affiliation_string":"Beijing Research Center of Urban Traffic Information Sensing and Service Technologies, Beijing Jiaotong University, Beijing 100044, China","institution_ids":["https://openalex.org/I21193070"]},{"raw_affiliation_string":"School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China","institution_ids":["https://openalex.org/I21193070"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5006610668"],"corresponding_institution_ids":["https://openalex.org/I21193070"],"apc_list":{"value":2000,"currency":"CHF","value_usd":2165},"apc_paid":{"value":2000,"currency":"CHF","value_usd":2165},"fwci":2.3601,"has_fulltext":true,"cited_by_count":31,"citation_normalized_percentile":{"value":0.88683201,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":99},"biblio":{"volume":"21","issue":"5","first_page":"476","last_page":"476"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10220","display_name":"Machine Fault Diagnosis Techniques","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10220","display_name":"Machine Fault Diagnosis Techniques","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13891","display_name":"Engineering Diagnostics and Reliability","score":0.963100016117096,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11062","display_name":"Gear and Bearing Dynamics Analysis","score":0.95660001039505,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/symplectic-geometry","display_name":"Symplectic geometry","score":0.6497654914855957},{"id":"https://openalex.org/keywords/feature-extraction","display_name":"Feature extraction","score":0.6296905279159546},{"id":"https://openalex.org/keywords/entropy","display_name":"Entropy (arrow of time)","score":0.5893623232841492},{"id":"https://openalex.org/keywords/fault","display_name":"Fault (geology)","score":0.5027587413787842},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5005648136138916},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.47508254647254944},{"id":"https://openalex.org/keywords/hydraulic-machinery","display_name":"Hydraulic machinery","score":0.4711422026157379},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.41701436042785645},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.40938037633895874},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.39360034465789795},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.3842596113681793},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.36388152837753296},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.32607904076576233},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3067689538002014},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2081460952758789},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.20428359508514404},{"id":"https://openalex.org/keywords/mechanical-engineering","display_name":"Mechanical engineering","score":0.14064568281173706},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.11238536238670349},{"id":"https://openalex.org/keywords/quantum-mechanics","display_name":"Quantum mechanics","score":0.06980067491531372}],"concepts":[{"id":"https://openalex.org/C168619227","wikidata":"https://www.wikidata.org/wiki/Q2190991","display_name":"Symplectic geometry","level":2,"score":0.6497654914855957},{"id":"https://openalex.org/C52622490","wikidata":"https://www.wikidata.org/wiki/Q1026626","display_name":"Feature extraction","level":2,"score":0.6296905279159546},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.5893623232841492},{"id":"https://openalex.org/C175551986","wikidata":"https://www.wikidata.org/wiki/Q47089","display_name":"Fault (geology)","level":2,"score":0.5027587413787842},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5005648136138916},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.47508254647254944},{"id":"https://openalex.org/C11394606","wikidata":"https://www.wikidata.org/wiki/Q1972552","display_name":"Hydraulic machinery","level":2,"score":0.4711422026157379},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.41701436042785645},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.40938037633895874},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.39360034465789795},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.3842596113681793},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.36388152837753296},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.32607904076576233},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3067689538002014},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2081460952758789},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.20428359508514404},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.14064568281173706},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.11238536238670349},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.06980067491531372},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C165205528","wikidata":"https://www.wikidata.org/wiki/Q83371","display_name":"Seismology","level":1,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3390/e21050476","is_oa":true,"landing_page_url":"https://doi.org/10.3390/e21050476","pdf_url":"https://www.mdpi.com/1099-4300/21/5/476/pdf?version=1557221235","source":{"id":"https://openalex.org/S195231649","display_name":"Entropy","issn_l":"1099-4300","issn":["1099-4300"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Entropy","raw_type":"journal-article"},{"id":"pmid:33267190","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/33267190","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Entropy (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:7738e1bf6a034b4a96d5f0db7f843126","is_oa":true,"landing_page_url":"https://doaj.org/article/7738e1bf6a034b4a96d5f0db7f843126","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Entropy, Vol 21, Iss 5, p 476 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1099-4300/21/5/476/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/e21050476","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Entropy","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:7514965","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/7514965","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Entropy (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/e21050476","is_oa":true,"landing_page_url":"https://doi.org/10.3390/e21050476","pdf_url":"https://www.mdpi.com/1099-4300/21/5/476/pdf?version=1557221235","source":{"id":"https://openalex.org/S195231649","display_name":"Entropy","issn_l":"1099-4300","issn":["1099-4300"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Entropy","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2140235226","display_name":null,"funder_award_id":"2016YFB1200402","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G3622624302","display_name":null,"funder_award_id":"No. 2016YFB1200402","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G4750540566","display_name":null,"funder_award_id":"2016YFB1200401","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"}],"funders":[{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2944236820.pdf","grobid_xml":"https://content.openalex.org/works/W2944236820.grobid-xml"},"referenced_works_count":34,"referenced_works":["https://openalex.org/W1964630314","https://openalex.org/W1973236629","https://openalex.org/W2000086911","https://openalex.org/W2008775610","https://openalex.org/W2038910337","https://openalex.org/W2045779008","https://openalex.org/W2063483719","https://openalex.org/W2073737879","https://openalex.org/W2090418475","https://openalex.org/W2094625209","https://openalex.org/W2137421215","https://openalex.org/W2140554090","https://openalex.org/W2301002797","https://openalex.org/W2441183164","https://openalex.org/W2588107663","https://openalex.org/W2593044082","https://openalex.org/W2593162611","https://openalex.org/W2604298574","https://openalex.org/W2605583977","https://openalex.org/W2605620338","https://openalex.org/W2605673312","https://openalex.org/W2758113345","https://openalex.org/W2766124620","https://openalex.org/W2770728546","https://openalex.org/W2783371799","https://openalex.org/W2783570740","https://openalex.org/W2791450787","https://openalex.org/W2796122488","https://openalex.org/W2802012801","https://openalex.org/W2804418531","https://openalex.org/W2810188680","https://openalex.org/W2897073610","https://openalex.org/W2963657557","https://openalex.org/W3014703726"],"related_works":["https://openalex.org/W2027826725","https://openalex.org/W139275344","https://openalex.org/W2964192738","https://openalex.org/W3099873305","https://openalex.org/W2365725759","https://openalex.org/W2390511951","https://openalex.org/W2004983417","https://openalex.org/W2352631335","https://openalex.org/W2348895893","https://openalex.org/W2353995638"],"abstract_inverted_index":{"Aiming":[0],"at":[1],"fault":[2,36,123],"feature":[3,124],"extraction":[4],"of":[5,57,65,77,102,126],"a":[6,10,34,55,92],"hydraulic":[7,127],"pump":[8,106,128],"signal,":[9,37],"new":[11],"method":[12,118],"based":[13],"on":[14],"symplectic":[15,41],"geometry":[16,42],"mode":[17],"decomposition":[18],"(SGMD)":[19],"and":[20,75,110,112],"power":[21,62],"spectral":[22,63],"entropy":[23,64],"(PSE)":[24],"is":[25,30,69,89],"proposed.":[26],"First,":[27],"the":[28,39,49,61,73,81,86,99,116,121],"SGMD":[29],"applied":[31],"to":[32,71],"decompose":[33],"multi-component":[35],"then":[38],"N":[40,50],"components":[43],"(SGCs)":[44],"can":[45,119],"be":[46],"obtained.":[47],"Second,":[48],"SGCs":[51,93],"are":[52,108],"reconstructed":[53,103],"as":[54,91],"signal":[56,68],"interest":[58],"and,":[59],"consequently,":[60],"each":[66],"constructed":[67],"computed":[70],"quantify":[72],"complexity":[74],"uncertainty":[76],"their":[78],"spectra.":[79],"Finally,":[80],"difference":[82],"value":[83],"(D-value)":[84],"between":[85],"adjacent":[87],"entropies":[88],"used":[90],"criterion,":[94],"whose":[95],"turning":[96],"point":[97],"indicates":[98],"most":[100],"information":[101,125],"signal.":[104],"Hydraulic":[105],"signals":[107,129],"tested":[109],"verified,":[111],"results":[113],"demonstrate":[114],"that":[115],"proposed":[117],"extract":[120],"richest":[122],"effectively.":[130]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":10},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":7}],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}