{"id":"https://openalex.org/W2600970829","doi":"https://doi.org/10.1109/tac.2017.2681520","title":"State and Unknown Input Observers for Nonlinear Systems With Bounded Exogenous Inputs","display_name":"State and Unknown Input Observers for Nonlinear Systems With Bounded Exogenous Inputs","publication_year":2017,"publication_date":"2017-03-22","ids":{"openalex":"https://openalex.org/W2600970829","doi":"https://doi.org/10.1109/tac.2017.2681520","mag":"2600970829"},"language":"en","primary_location":{"id":"doi:10.1109/tac.2017.2681520","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tac.2017.2681520","pdf_url":null,"source":{"id":"https://openalex.org/S184954342","display_name":"IEEE Transactions on Automatic Control","issn_l":"0018-9286","issn":["0018-9286","1558-2523","2334-3303"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Automatic Control","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/A5074220429","display_name":"Ankush Chakrabarty","orcid":"https://orcid.org/0000-0001-9637-854X"},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ankush Chakrabarty","raw_affiliation_strings":["Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA"],"raw_orcid":"https://orcid.org/0000-0001-9637-854X","affiliations":[{"raw_affiliation_string":"Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA","institution_ids":["https://openalex.org/I136199984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091783245","display_name":"M. Corless","orcid":"https://orcid.org/0000-0001-6820-7225"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Martin J. Corless","raw_affiliation_strings":["School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN, USA","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020010248","display_name":"Gregery T. Buzzard","orcid":"https://orcid.org/0000-0001-9777-3090"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Gregery T. Buzzard","raw_affiliation_strings":["Department of Mathematics, Purdue University, West Lafayette, IN, USA"],"raw_orcid":"https://orcid.org/0000-0001-9777-3090","affiliations":[{"raw_affiliation_string":"Department of Mathematics, Purdue University, West Lafayette, IN, USA","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046812485","display_name":"Stanis\u0142aw H. \u017bak","orcid":"https://orcid.org/0000-0001-9616-615X"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Stanislaw H. Zak","raw_affiliation_strings":["School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA"],"raw_orcid":"https://orcid.org/0000-0001-9616-615X","affiliations":[{"raw_affiliation_string":"School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048545593","display_name":"Ann E. Rundell","orcid":null},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ann E. Rundell","raw_affiliation_strings":["Biomedical Engineering, Purdue University, West Lafayette, IN, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Biomedical Engineering, Purdue University, West Lafayette, IN, USA","institution_ids":["https://openalex.org/I219193219"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":7.9893,"has_fulltext":false,"cited_by_count":98,"citation_normalized_percentile":{"value":0.97928884,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"62","issue":"11","first_page":"5497","last_page":"5510"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10040","display_name":"Adaptive Control of Nonlinear Systems","score":0.9998000264167786,"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/T10040","display_name":"Adaptive Control of Nonlinear Systems","score":0.9998000264167786,"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/T10046","display_name":"Stability and Control of Uncertain Systems","score":0.9997000098228455,"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/T12772","display_name":"Control and Stability of Dynamical Systems","score":0.9995999932289124,"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":0.7462977170944214},{"id":"https://openalex.org/keywords/bounded-function","display_name":"Bounded function","score":0.7008944153785706},{"id":"https://openalex.org/keywords/parameterized-complexity","display_name":"Parameterized complexity","score":0.6583173274993896},{"id":"https://openalex.org/keywords/nonlinear-system","display_name":"Nonlinear system","score":0.6046741008758545},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6018639206886292},{"id":"https://openalex.org/keywords/observer","display_name":"Observer (physics)","score":0.5374346971511841},{"id":"https://openalex.org/keywords/linear-system","display_name":"Linear system","score":0.5220006704330444},{"id":"https://openalex.org/keywords/state-vector","display_name":"State vector","score":0.4868397116661072},{"id":"https://openalex.org/keywords/state","display_name":"State (computer science)","score":0.47526782751083374},{"id":"https://openalex.org/keywords/quadratic-equation","display_name":"Quadratic equation","score":0.4656314253807068},{"id":"https://openalex.org/keywords/robustness","display_name":"Robustness (evolution)","score":0.4113166332244873},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.4110787808895111},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.39937347173690796},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3360309600830078},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2173464298248291},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.15197113156318665}],"concepts":[{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.7462977170944214},{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.7008944153785706},{"id":"https://openalex.org/C165464430","wikidata":"https://www.wikidata.org/wiki/Q1570441","display_name":"Parameterized complexity","level":2,"score":0.6583173274993896},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.6046741008758545},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6018639206886292},{"id":"https://openalex.org/C2780704645","wikidata":"https://www.wikidata.org/wiki/Q9251458","display_name":"Observer (physics)","level":2,"score":0.5374346971511841},{"id":"https://openalex.org/C6802819","wikidata":"https://www.wikidata.org/wiki/Q1072174","display_name":"Linear system","level":2,"score":0.5220006704330444},{"id":"https://openalex.org/C2777798563","wikidata":"https://www.wikidata.org/wiki/Q7603916","display_name":"State vector","level":2,"score":0.4868397116661072},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.47526782751083374},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.4656314253807068},{"id":"https://openalex.org/C63479239","wikidata":"https://www.wikidata.org/wiki/Q7353546","display_name":"Robustness (evolution)","level":3,"score":0.4113166332244873},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4110787808895111},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.39937347173690796},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3360309600830078},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2173464298248291},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.15197113156318665},{"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/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","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},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tac.2017.2681520","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tac.2017.2681520","pdf_url":null,"source":{"id":"https://openalex.org/S184954342","display_name":"IEEE Transactions on Automatic Control","issn_l":"0018-9286","issn":["0018-9286","1558-2523","2334-3303"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Automatic Control","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G8453412974","display_name":"Quantitative Design of Experiments to Predictably Alter Intracellular Signaling Dynamics","funder_award_id":"0900277","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":62,"referenced_works":["https://openalex.org/W55814457","https://openalex.org/W573209145","https://openalex.org/W1480435716","https://openalex.org/W1490050646","https://openalex.org/W1566387820","https://openalex.org/W1963688148","https://openalex.org/W1974406902","https://openalex.org/W1977840056","https://openalex.org/W1978044917","https://openalex.org/W1987692687","https://openalex.org/W1990438944","https://openalex.org/W2013177354","https://openalex.org/W2014028176","https://openalex.org/W2024417093","https://openalex.org/W2024828675","https://openalex.org/W2027417664","https://openalex.org/W2030024491","https://openalex.org/W2033468100","https://openalex.org/W2045310365","https://openalex.org/W2048699277","https://openalex.org/W2050063042","https://openalex.org/W2051635647","https://openalex.org/W2057387482","https://openalex.org/W2058593815","https://openalex.org/W2058731737","https://openalex.org/W2060455556","https://openalex.org/W2064109748","https://openalex.org/W2064286311","https://openalex.org/W2067559621","https://openalex.org/W2072002235","https://openalex.org/W2075487336","https://openalex.org/W2079792035","https://openalex.org/W2081989379","https://openalex.org/W2082847490","https://openalex.org/W2084628204","https://openalex.org/W2089037629","https://openalex.org/W2093498713","https://openalex.org/W2099084425","https://openalex.org/W2103345351","https://openalex.org/W2108175843","https://openalex.org/W2113642685","https://openalex.org/W2114020484","https://openalex.org/W2118622626","https://openalex.org/W2118955756","https://openalex.org/W2134889984","https://openalex.org/W2135653743","https://openalex.org/W2138144965","https://openalex.org/W2141471226","https://openalex.org/W2148852206","https://openalex.org/W2153775930","https://openalex.org/W2154388121","https://openalex.org/W2155597283","https://openalex.org/W2160821152","https://openalex.org/W2166214758","https://openalex.org/W2328736443","https://openalex.org/W2561081821","https://openalex.org/W2576333144","https://openalex.org/W2597246818","https://openalex.org/W3196167895","https://openalex.org/W6629277172","https://openalex.org/W6677091371","https://openalex.org/W6680257263"],"related_works":["https://openalex.org/W2051058708","https://openalex.org/W154868527","https://openalex.org/W4316660933","https://openalex.org/W2387688832","https://openalex.org/W2479908422","https://openalex.org/W4206933236","https://openalex.org/W4386930267","https://openalex.org/W2112290169","https://openalex.org/W2987523337","https://openalex.org/W2158390506"],"abstract_inverted_index":{"A":[0],"systematic":[1],"design":[2],"methodology":[3],"for":[4,7],"state":[5,61],"observers":[6],"a":[8,38,55,65,91],"large":[9],"class":[10],"of":[11,40,68,74,81],"nonlinear":[12],"systems":[13],"with":[14,90],"bounded":[15],"exogenous":[16],"inputs":[17,19,77],"(disturbance":[18],"and":[20],"sensor":[21],"noise)":[22],"is":[23,88],"proposed.":[24],"The":[25,85],"nonlinearities":[26],"under":[27],"consideration":[28],"are":[29,46,83],"characterized":[30],"by":[31,37],"an":[32],"incremental":[33],"quadratic":[34],"constraint":[35],"parameterized":[36],"set":[39],"multiplier":[41],"matrices.":[42],"Linear":[43],"matrix":[44],"inequalities":[45],"developed":[47],"to":[48,78],"construct":[49],"observer":[50],"gains,":[51],"which":[52,94],"ensure":[53],"that":[54],"performance":[56],"output":[57],"based":[58],"on":[59],"the":[60,75,98],"estimation":[62,73],"error":[63],"satisfies":[64],"prescribed":[66],"degree":[67],"accuracy.":[69],"Furthermore,":[70],"conditions":[71],"guaranteeing":[72],"unknown":[76],"arbitrary":[79],"degrees":[80],"accuracy":[82],"provided.":[84],"proposed":[86],"scheme":[87],"illustrated":[89],"numerical":[92],"example,":[93],"does":[95],"not":[96],"satisfy":[97],"so-called":[99],"\u201cmatching":[100],"conditions.\u201d":[101]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":9},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":12},{"year":2021,"cited_by_count":11},{"year":2020,"cited_by_count":13},{"year":2019,"cited_by_count":23},{"year":2018,"cited_by_count":12},{"year":2017,"cited_by_count":3}],"updated_date":"2026-08-06T08:24:18.245995","created_date":"2025-10-10T00:00:00"}
