{"id":"https://openalex.org/W2147891734","doi":"https://doi.org/10.1109/cdc.2008.4739065","title":"Strictly positive real systems based on reduced-order observers","display_name":"Strictly positive real systems based on reduced-order observers","publication_year":2008,"publication_date":"2008-01-01","ids":{"openalex":"https://openalex.org/W2147891734","doi":"https://doi.org/10.1109/cdc.2008.4739065","mag":"2147891734"},"language":"en","primary_location":{"id":"doi:10.1109/cdc.2008.4739065","is_oa":false,"landing_page_url":"https://doi.org/10.1109/cdc.2008.4739065","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 47th IEEE Conference on Decision and Control","raw_type":"proceedings-article"},"type":"preprint","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/A5084540714","display_name":"Rolf Johansson","orcid":"https://orcid.org/0000-0002-0786-8561"},"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":"Rolf Johansson","raw_affiliation_strings":["Department of Automatic Control, Lund University, Lund, Sweden"],"affiliations":[{"raw_affiliation_string":"Department of Automatic Control, Lund University, Lund, Sweden","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108500980","display_name":"Joaqu\u0131\u0301n Collado","orcid":null},"institutions":[{"id":"https://openalex.org/I68368234","display_name":"Center for Research and Advanced Studies of the National Polytechnic Institute","ror":"https://ror.org/009eqmr18","country_code":"MX","type":"facility","lineage":["https://openalex.org/I59361560","https://openalex.org/I68368234"]}],"countries":["MX"],"is_corresponding":false,"raw_author_name":"Joaquin Collado","raw_affiliation_strings":["Department of Automtic Control, CINVESTAV, Mexicali, Mexico"],"affiliations":[{"raw_affiliation_string":"Department of Automtic Control, CINVESTAV, Mexicali, Mexico","institution_ids":["https://openalex.org/I68368234"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5004002307","display_name":"Rogelio Lozano","orcid":"https://orcid.org/0000-0002-5730-6313"},"institutions":[{"id":"https://openalex.org/I4210088387","display_name":"Heuristics and Diagnostics for Complex Systems","ror":"https://ror.org/0075hvk77","country_code":"FR","type":"facility","lineage":["https://openalex.org/I102516824","https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I4210088387","https://openalex.org/I4210159245"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Rogelio Lozano","raw_affiliation_strings":["UMR 6599, HEUDIASYC, Compiegne, France"],"affiliations":[{"raw_affiliation_string":"UMR 6599, HEUDIASYC, Compiegne, France","institution_ids":["https://openalex.org/I4210088387"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5084540714"],"corresponding_institution_ids":["https://openalex.org/I187531555"],"apc_list":null,"apc_paid":null,"fwci":0.78878752,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.80170861,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"38","issue":null,"first_page":"2944","last_page":"2948"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10046","display_name":"Stability and Control of Uncertain Systems","score":0.9987999796867371,"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/T10046","display_name":"Stability and Control of Uncertain Systems","score":0.9987999796867371,"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/T10040","display_name":"Adaptive Control of Nonlinear Systems","score":0.9962000250816345,"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":0.9948999881744385,"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/control-theory","display_name":"Control theory (sociology)","score":0.8080610036849976},{"id":"https://openalex.org/keywords/observer","display_name":"Observer (physics)","score":0.7472753524780273},{"id":"https://openalex.org/keywords/observable","display_name":"Observable","score":0.49448585510253906},{"id":"https://openalex.org/keywords/minimum-phase","display_name":"Minimum phase","score":0.49446678161621094},{"id":"https://openalex.org/keywords/linear-system","display_name":"Linear system","score":0.48781445622444153},{"id":"https://openalex.org/keywords/state-observer","display_name":"State observer","score":0.4862722158432007},{"id":"https://openalex.org/keywords/lti-system-theory","display_name":"LTI system theory","score":0.4837774932384491},{"id":"https://openalex.org/keywords/control-system","display_name":"Control system","score":0.4736272692680359},{"id":"https://openalex.org/keywords/open-loop-controller","display_name":"Open-loop controller","score":0.4713674783706665},{"id":"https://openalex.org/keywords/extension","display_name":"Extension (predicate logic)","score":0.4513489603996277},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.44496065378189087},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4170704483985901},{"id":"https://openalex.org/keywords/closed-loop","display_name":"Closed loop","score":0.3130950331687927},{"id":"https://openalex.org/keywords/phase","display_name":"Phase (matter)","score":0.24144622683525085},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.22687479853630066},{"id":"https://openalex.org/keywords/control-engineering","display_name":"Control engineering","score":0.17632800340652466},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11838379502296448},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.10417395830154419},{"id":"https://openalex.org/keywords/nonlinear-system","display_name":"Nonlinear system","score":0.09209907054901123},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.06435218453407288},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.061947375535964966}],"concepts":[{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.8080610036849976},{"id":"https://openalex.org/C2780704645","wikidata":"https://www.wikidata.org/wiki/Q9251458","display_name":"Observer (physics)","level":2,"score":0.7472753524780273},{"id":"https://openalex.org/C32848918","wikidata":"https://www.wikidata.org/wiki/Q845789","display_name":"Observable","level":2,"score":0.49448585510253906},{"id":"https://openalex.org/C170263048","wikidata":"https://www.wikidata.org/wiki/Q489593","display_name":"Minimum phase","level":3,"score":0.49446678161621094},{"id":"https://openalex.org/C6802819","wikidata":"https://www.wikidata.org/wiki/Q1072174","display_name":"Linear system","level":2,"score":0.48781445622444153},{"id":"https://openalex.org/C3031470","wikidata":"https://www.wikidata.org/wiki/Q818544","display_name":"State observer","level":3,"score":0.4862722158432007},{"id":"https://openalex.org/C87698059","wikidata":"https://www.wikidata.org/wiki/Q1808960","display_name":"LTI system theory","level":3,"score":0.4837774932384491},{"id":"https://openalex.org/C17500928","wikidata":"https://www.wikidata.org/wiki/Q959968","display_name":"Control system","level":2,"score":0.4736272692680359},{"id":"https://openalex.org/C161362739","wikidata":"https://www.wikidata.org/wiki/Q2301555","display_name":"Open-loop controller","level":3,"score":0.4713674783706665},{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.4513489603996277},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.44496065378189087},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4170704483985901},{"id":"https://openalex.org/C3019251811","wikidata":"https://www.wikidata.org/wiki/Q5135346","display_name":"Closed loop","level":2,"score":0.3130950331687927},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.24144622683525085},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.22687479853630066},{"id":"https://openalex.org/C133731056","wikidata":"https://www.wikidata.org/wiki/Q4917288","display_name":"Control engineering","level":1,"score":0.17632800340652466},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11838379502296448},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.10417395830154419},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.09209907054901123},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06435218453407288},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.061947375535964966},{"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/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/cdc.2008.4739065","is_oa":false,"landing_page_url":"https://doi.org/10.1109/cdc.2008.4739065","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 47th IEEE Conference on Decision and Control","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320322581","display_name":"Vetenskapsr\u00e5det","ror":"https://ror.org/03zttf063"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W94566284","https://openalex.org/W1509033957","https://openalex.org/W1570330619","https://openalex.org/W1834551183","https://openalex.org/W1972904014","https://openalex.org/W1978474788","https://openalex.org/W1983125749","https://openalex.org/W2023129790","https://openalex.org/W2023285936","https://openalex.org/W2026760829","https://openalex.org/W2037661749","https://openalex.org/W2046874050","https://openalex.org/W2068391479","https://openalex.org/W2077418568","https://openalex.org/W2088748973","https://openalex.org/W2102899117","https://openalex.org/W2109868074","https://openalex.org/W2117964155","https://openalex.org/W2128912269","https://openalex.org/W2159284975","https://openalex.org/W2159495647","https://openalex.org/W2159559217","https://openalex.org/W2159924128","https://openalex.org/W2162518888","https://openalex.org/W2171884062","https://openalex.org/W2173655556","https://openalex.org/W2255439832","https://openalex.org/W2349693685","https://openalex.org/W2570513205","https://openalex.org/W2610857016","https://openalex.org/W2798813531","https://openalex.org/W4285719527","https://openalex.org/W6646131314","https://openalex.org/W6727370633"],"related_works":["https://openalex.org/W2103982267","https://openalex.org/W2065196227","https://openalex.org/W2319944002","https://openalex.org/W1480144644","https://openalex.org/W2724432464","https://openalex.org/W4386566382","https://openalex.org/W2357305699","https://openalex.org/W2114024218","https://openalex.org/W2126107835","https://openalex.org/W1484482787"],"abstract_inverted_index":{"We":[0],"study":[1],"the":[2,5,35,67,72,83,87],"extension":[3],"of":[4,7,75,85],"class":[6],"linear":[8],"time-invariant":[9],"open-loop":[10,28,38],"systems":[11,18,30,40],"that":[12,26],"may":[13,54],"be":[14,55],"transformed":[15,56],"into":[16,57],"SPR":[17,59],"introducing":[19],"a":[20,31,62],"reduced-order":[21],"observer.":[22],"It":[23],"is":[24,43,92],"shown":[25],"for":[27,82],"stable":[29],"cascaded":[32],"observer":[33,68],"achieves":[34],"result.":[36],"For":[37],"unstable":[39],"observer-based":[41],"feedback":[42],"required":[44],"to":[45],"succeed.":[46],"In":[47],"general,":[48],"any":[49],"stabilizable":[50],"and":[51,78],"observable":[52],"system":[53,60],"an":[58],"defining":[61],"new":[63],"output":[64],"based":[65],"on":[66],"state.":[69],"This":[70],"overcomes":[71],"old":[73],"conditions":[74],"minimum":[76],"phase":[77],"relative":[79],"degree":[80],"one":[81],"case":[84],"keeping":[86],"original":[88],"output.":[89],"The":[90],"result":[91],"illustrated":[93],"with":[94],"some":[95],"examples.":[96]},"counts_by_year":[{"year":2019,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}