{"id":"https://openalex.org/W1992309097","doi":"https://doi.org/10.1016/0005-1098(77)90009-7","title":"Identification of processes in closed loop\u2014identifiability and accuracy aspects","display_name":"Identification of processes in closed loop\u2014identifiability and accuracy aspects","publication_year":1977,"publication_date":"1977-01-01","ids":{"openalex":"https://openalex.org/W1992309097","doi":"https://doi.org/10.1016/0005-1098(77)90009-7","mag":"1992309097"},"language":"en","primary_location":{"id":"doi:10.1016/0005-1098(77)90009-7","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0005-1098(77)90009-7","pdf_url":null,"source":{"id":"https://openalex.org/S51360982","display_name":"Automatica","issn_l":"0005-1098","issn":["0005-1098","1873-2836"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Automatica","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"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/A5021040906","display_name":"Ivar Gustavsson","orcid":null},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":true,"raw_author_name":"I. Gustavsson","raw_affiliation_strings":["Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden","Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden#TAB#","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078405221","display_name":"Lennart Ljung","orcid":"https://orcid.org/0000-0003-4881-8955"},"institutions":[{"id":"https://openalex.org/I123387679","display_name":"Uppsala University","ror":"https://ror.org/048a87296","country_code":"SE","type":"education","lineage":["https://openalex.org/I123387679"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"L. Ljung","raw_affiliation_strings":["Department of Automatic Control and Systems Analysis, Institute of Technology, Uppsala University, S-751 21 Uppsala, Sweden","Department of Automatic Control and Systems Analysis, Institute of Technology, Uppsala University, S-751 21 Uppsala, Sweden#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Automatic Control and Systems Analysis, Institute of Technology, Uppsala University, S-751 21 Uppsala, Sweden","institution_ids":["https://openalex.org/I123387679"]},{"raw_affiliation_string":"Department of Automatic Control and Systems Analysis, Institute of Technology, Uppsala University, S-751 21 Uppsala, Sweden#TAB#","institution_ids":["https://openalex.org/I123387679"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111770240","display_name":"T. S\u00f6derstr\u00f6m","orcid":null},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"T. S\u00f6derstr\u00f6m","raw_affiliation_strings":["Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden","Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Department of Automatic Control, Lund Institute of Technology, Box 725, S-220 07 Lund 7, Sweden#TAB#","institution_ids":["https://openalex.org/I187531555"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5021040906"],"corresponding_institution_ids":["https://openalex.org/I187531555"],"apc_list":{"value":3500,"currency":"USD","value_usd":3500},"apc_paid":null,"fwci":41.905,"has_fulltext":false,"cited_by_count":421,"citation_normalized_percentile":{"value":0.99939345,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"13","issue":"1","first_page":"59","last_page":"75"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11236","display_name":"Control Systems and Identification","score":0.9994999766349792,"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/T11236","display_name":"Control Systems and Identification","score":0.9994999766349792,"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/T10876","display_name":"Fault Detection and Control Systems","score":0.9980999827384949,"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/T10791","display_name":"Advanced Control Systems Optimization","score":0.9958999752998352,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/identifiability","display_name":"Identifiability","score":0.8713572025299072},{"id":"https://openalex.org/keywords/identification","display_name":"Identification (biology)","score":0.8299599885940552},{"id":"https://openalex.org/keywords/confusion","display_name":"Confusion","score":0.6593417525291443},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6466894745826721},{"id":"https://openalex.org/keywords/closed-loop","display_name":"Closed loop","score":0.5689021348953247},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.4155597388744354},{"id":"https://openalex.org/keywords/control-engineering","display_name":"Control engineering","score":0.3345257639884949},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.26942920684814453},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.22605684399604797},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.21986934542655945},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.1748618483543396}],"concepts":[{"id":"https://openalex.org/C122770356","wikidata":"https://www.wikidata.org/wiki/Q1656753","display_name":"Identifiability","level":2,"score":0.8713572025299072},{"id":"https://openalex.org/C116834253","wikidata":"https://www.wikidata.org/wiki/Q2039217","display_name":"Identification (biology)","level":2,"score":0.8299599885940552},{"id":"https://openalex.org/C2781140086","wikidata":"https://www.wikidata.org/wiki/Q557945","display_name":"Confusion","level":2,"score":0.6593417525291443},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6466894745826721},{"id":"https://openalex.org/C3019251811","wikidata":"https://www.wikidata.org/wiki/Q5135346","display_name":"Closed loop","level":2,"score":0.5689021348953247},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.4155597388744354},{"id":"https://openalex.org/C133731056","wikidata":"https://www.wikidata.org/wiki/Q4917288","display_name":"Control engineering","level":1,"score":0.3345257639884949},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.26942920684814453},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.22605684399604797},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.21986934542655945},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.1748618483543396},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"id":"https://openalex.org/C11171543","wikidata":"https://www.wikidata.org/wiki/Q41630","display_name":"Psychoanalysis","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1016/0005-1098(77)90009-7","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0005-1098(77)90009-7","pdf_url":null,"source":{"id":"https://openalex.org/S51360982","display_name":"Automatica","issn_l":"0005-1098","issn":["0005-1098","1873-2836"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Automatica","raw_type":"journal-article"},{"id":"pmh:oai:lup.lub.lu.se:2be44ad1-1767-46eb-8018-99363f89f087","is_oa":false,"landing_page_url":"https://lup.lub.lu.se/record/2be44ad1-1767-46eb-8018-99363f89f087","pdf_url":null,"source":{"id":"https://openalex.org/S4306400536","display_name":"Lund University Publications (Lund University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I187531555","host_organization_name":"Lund University","host_organization_lineage":["https://openalex.org/I187531555"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Automatica; 13(1), pp 59-75 (1977)","raw_type":"contributiontojournal/article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":93,"referenced_works":["https://openalex.org/W787379125","https://openalex.org/W1032300944","https://openalex.org/W1240977814","https://openalex.org/W1496222892","https://openalex.org/W1550676738","https://openalex.org/W1603277681","https://openalex.org/W1608230802","https://openalex.org/W1669478466","https://openalex.org/W1969075610","https://openalex.org/W1969197181","https://openalex.org/W1974344680","https://openalex.org/W1974970821","https://openalex.org/W1977057326","https://openalex.org/W2000021055","https://openalex.org/W2003995054","https://openalex.org/W2005188443","https://openalex.org/W2021436740","https://openalex.org/W2022255280","https://openalex.org/W2024320137","https://openalex.org/W2029819506","https://openalex.org/W2047126199","https://openalex.org/W2051104424","https://openalex.org/W2052016582","https://openalex.org/W2053322204","https://openalex.org/W2056301349","https://openalex.org/W2056814875","https://openalex.org/W2058029599","https://openalex.org/W2058899256","https://openalex.org/W2058997246","https://openalex.org/W2063580436","https://openalex.org/W2069097572","https://openalex.org/W2071971292","https://openalex.org/W2074006761","https://openalex.org/W2077363969","https://openalex.org/W2078314799","https://openalex.org/W2079270725","https://openalex.org/W2081422011","https://openalex.org/W2084789498","https://openalex.org/W2086978307","https://openalex.org/W2095101778","https://openalex.org/W2110119295","https://openalex.org/W2112913559","https://openalex.org/W2114024218","https://openalex.org/W2116149872","https://openalex.org/W2136422220","https://openalex.org/W2145313009","https://openalex.org/W2148036379","https://openalex.org/W2154831602","https://openalex.org/W2156124792","https://openalex.org/W2158208985","https://openalex.org/W2158865308","https://openalex.org/W2198938783","https://openalex.org/W2313557851","https://openalex.org/W2313953460","https://openalex.org/W2322171786","https://openalex.org/W2328922744","https://openalex.org/W2345644504","https://openalex.org/W2345723133","https://openalex.org/W2346819238","https://openalex.org/W2365293295","https://openalex.org/W2397440404","https://openalex.org/W2402732576","https://openalex.org/W2726038563","https://openalex.org/W2726704350","https://openalex.org/W2728131830","https://openalex.org/W2731099523","https://openalex.org/W2796104303","https://openalex.org/W3142776327","https://openalex.org/W4253920091","https://openalex.org/W4255783720","https://openalex.org/W6622777023","https://openalex.org/W6629504283","https://openalex.org/W6633019589","https://openalex.org/W6642682987","https://openalex.org/W6650257962","https://openalex.org/W6651569580","https://openalex.org/W6655768038","https://openalex.org/W6655899828","https://openalex.org/W6656289587","https://openalex.org/W6662021966","https://openalex.org/W6663240288","https://openalex.org/W6669746116","https://openalex.org/W6672391545","https://openalex.org/W6674030255","https://openalex.org/W6676369580","https://openalex.org/W6677564248","https://openalex.org/W6681588987","https://openalex.org/W6682086022","https://openalex.org/W6682958640","https://openalex.org/W6687788021","https://openalex.org/W6713091991","https://openalex.org/W6740260732","https://openalex.org/W6740497446"],"related_works":["https://openalex.org/W2724847603","https://openalex.org/W2034041141","https://openalex.org/W2184661725","https://openalex.org/W2900187352","https://openalex.org/W2573470972","https://openalex.org/W2105626102","https://openalex.org/W2131038454","https://openalex.org/W2073660146","https://openalex.org/W2729942106","https://openalex.org/W2114024218"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":9},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":8},{"year":2018,"cited_by_count":6},{"year":2017,"cited_by_count":6},{"year":2016,"cited_by_count":11},{"year":2015,"cited_by_count":11},{"year":2014,"cited_by_count":5},{"year":2013,"cited_by_count":10},{"year":2012,"cited_by_count":8}],"updated_date":"2026-04-02T15:55:50.835912","created_date":"2025-10-10T00:00:00"}
