{"id":"https://openalex.org/W1670575615","doi":null,"title":"Ramp-integration technique for capacitance-type blade-tip clearance measurement","display_name":"Ramp-integration technique for capacitance-type blade-tip clearance measurement","publication_year":1986,"publication_date":"1986-01-01","ids":{"openalex":"https://openalex.org/W1670575615","mag":"1670575615"},"language":"de","primary_location":{"id":"pmh:oai:casi.ntrs.nasa.gov:19860015493","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/2060/19860015493","pdf_url":null,"source":{"id":"https://openalex.org/S4377196257","display_name":"NASA STI Repository (National Aeronautics and Space Administration)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"CASI","raw_type":"NASA-TM-87241"},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5088701666","display_name":"Garimella R. Sarma","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I2799786008","display_name":"Glenn Research Center","ror":"https://ror.org/059fqnc42","country_code":"US","type":"facility","lineage":["https://openalex.org/I2799786008","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Garimella R. Sarma","raw_affiliation_strings":["NASA Lewis Research Center Cleveland, OH., United States"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Lewis Research Center Cleveland, OH., United States","institution_ids":["https://openalex.org/I2799786008"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5008884137","display_name":"John P. Barranger","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J. P. Barranger","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.1487433,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"86","issue":null,"first_page":"24964","last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12564","display_name":"Sensor Technology and Measurement Systems","score":0.5551999807357788,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12564","display_name":"Sensor Technology and Measurement Systems","score":0.5551999807357788,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13928","display_name":"Advanced Sensor Technologies Research","score":0.41940000653266907,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10944","display_name":"Turbomachinery Performance and Optimization","score":0.005900000222027302,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[],"concepts":[{"id":"https://openalex.org/C30066665","wikidata":"https://www.wikidata.org/wiki/Q164399","display_name":"Capacitance","level":3,"score":0.7839133739471436},{"id":"https://openalex.org/C145366948","wikidata":"https://www.wikidata.org/wiki/Q178947","display_name":"Operational amplifier","level":4,"score":0.5517553687095642},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.5501089096069336},{"id":"https://openalex.org/C89123640","wikidata":"https://www.wikidata.org/wiki/Q1523756","display_name":"Instrumentation amplifier","level":5,"score":0.5458247661590576},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.5372498035430908},{"id":"https://openalex.org/C203455917","wikidata":"https://www.wikidata.org/wiki/Q5034478","display_name":"Capacitance probe","level":4,"score":0.4636915922164917},{"id":"https://openalex.org/C81370116","wikidata":"https://www.wikidata.org/wiki/Q1335249","display_name":"Time constant","level":2,"score":0.4626423120498657},{"id":"https://openalex.org/C68742264","wikidata":"https://www.wikidata.org/wiki/Q1736442","display_name":"Current-feedback operational amplifier","level":5,"score":0.4551118016242981},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.43417733907699585},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.28708261251449585},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.28298330307006836},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.26457467675209045},{"id":"https://openalex.org/C17525397","wikidata":"https://www.wikidata.org/wiki/Q176140","display_name":"Electrode","level":2,"score":0.25901490449905396},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.22953975200653076},{"id":"https://openalex.org/C46362747","wikidata":"https://www.wikidata.org/wiki/Q173431","display_name":"CMOS","level":2,"score":0.16126206517219543},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","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},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:casi.ntrs.nasa.gov:19860015493","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/2060/19860015493","pdf_url":null,"source":{"id":"https://openalex.org/S4377196257","display_name":"NASA STI Repository (National Aeronautics and Space Administration)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"CASI","raw_type":"NASA-TM-87241"},{"id":"mag:1670575615","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/api/citations/19860015493/downloads/19860015493.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Rundbrief Der Gi-fachgruppe 5.10 Informationssystem-architekturen","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2134478350","https://openalex.org/W2083150775","https://openalex.org/W2049850203","https://openalex.org/W4229931498","https://openalex.org/W3021444205","https://openalex.org/W3120031498","https://openalex.org/W1976563649","https://openalex.org/W1999075582","https://openalex.org/W2080787538","https://openalex.org/W4409494436"],"abstract_inverted_index":{"The":[0,16,43,70,101,120],"analysis":[1],"of":[2,33,37,58,86,89,97,112],"a":[3,23,28,38,64,68,78,113],"proposed":[4,121],"new":[5],"technique":[6],"for":[7,55,138],"capacitance":[8,17,25,105],"type":[9],"blade":[10,20,102],"tip":[11,21,103],"clearance":[12,104],"measurement":[13],"is":[14,51,81,106],"presented.":[15],"between":[18],"the":[19,34,47,61,84,87,90,94,98,110,126,135],"and":[22,53,67,93,129,145],"mounted":[24],"electrode":[26],"within":[27],"guard":[29],"ring":[30],"forms":[31],"one":[32],"feedback":[35,99],"elements":[36],"high":[39],"speed":[40],"operational":[41,48],"amplifier.":[42],"differential":[44],"equation":[45],"governing":[46],"amplifier":[49,62],"circuit":[50],"formulated":[52],"solved":[54],"two":[56],"types":[57],"inputs":[59],"to":[60,83],"-":[63],"constant":[65,96],"voltage":[66,92],"ramp.":[69],"resultant":[71],"solutions":[72],"shows":[73],"an":[74],"output":[75,111],"that":[76,80],"contains":[77],"term":[79],"proportional":[82],"derivative":[85],"product":[88],"input":[91],"time":[95],"network.":[100],"obtained":[107],"by":[108,118],"subtracting":[109],"balancing":[114],"reference":[115],"channel":[116],"followed":[117],"integration.":[119],"sampled":[122],"data":[123],"algorithm":[124],"corrects":[125],"environmental":[127],"effects":[128],"varying":[130],"rotor":[131],"speeds":[132],"on-line,":[133],"making":[134],"system":[136],"suitable":[137],"turbine":[139],"instrumentation.":[140],"System":[141],"requirements,":[142],"block":[143],"diagrams,":[144],"typical":[146],"application":[147],"are":[148],"included.":[149]},"counts_by_year":[],"updated_date":"2026-11-01T11:40:01.658920","created_date":"2016-06-24T00:00:00"}