{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/3782"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/3782","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Estudo de sistemas de controle a estrutura variável","abstract":"Study of a class of adaptive control systems: the Variable Structure Control Systems. A control system is said to be of variable structure if the structure and/or the parameters of the controller varies, the parameters variations being discontinuous, depending on the state, and/or the perturbations of the controlled system. For this study, some results obtained by Fillipov about the differential equations with discontinuous right-hand side are used. For the case of single input-single output linear systems, a detailed analysis of the essential properties and advantages of variable structure control systems is done. An important characteristic of these systems, is the possibility of sliding regimes, when the controlled system becomes invariant. An extension of Liapunov's second method is used for the stability study, and the analysis of the relationship between the sliding regime condition, and the stability of an invariant set, which is the sliding surface itself.","abstract_html":"Study of a class of adaptive control systems: the Variable Structure Control Systems. A control system is said to be of variable structure if the structure and/or the parameters of the controller varies, the parameters variations being discontinuous, depending on the state, and/or the perturbations of the controlled system. For this study, some results obtained by Fillipov about the differential equations with discontinuous right-hand side are used. For the case of single input-single output linear systems, a detailed analysis of the essential properties and advantages of variable structure control systems is done. An important characteristic of these systems, is the possibility of sliding regimes, when the controlled system becomes invariant. An extension of Liapunov's second method is used for the stability study, and the analysis of the relationship between the sliding regime condition, and the stability of an invariant set, which is the sliding surface itself.","abstract_has_math":false,"creators":["Souza, Fernando Menezes Campello de"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Cunha, Nelson Ortegosa da"],"committee_chairs":[],"committee_members":[],"year":1973,"date_issued":"1973-11","date_published":"1973-11","updated_at":"2026-07-24T01:16:10Z","subjects":["Sistemas de controle","Equações diferenciais","Funções de Liapunov","Teoria do controle"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/3782","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Cunha, Nelson Ortegosa da"]},{"key":"dc:creator","label":"Author","values":["Souza, Fernando Menezes Campello de"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-03-26T18:54:34Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:05:25Z"]},{"key":"dc:date.issued","label":"Date","values":["1973-11"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Sistemas de controle","Equações diferenciais","Funções de Liapunov","Teoria do controle"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/3782"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Study of a class of adaptive control systems: the Variable Structure Control Systems. A control system is said to be of variable structure if the structure and/or the parameters of the controller varies, the parameters variations being discontinuous, depending on the state, and/or the perturbations of the controlled system. For this study, some results obtained by Fillipov about the differential equations with discontinuous right-hand side are used. For the case of single input-single output linear systems, a detailed analysis of the essential properties and advantages of variable structure control systems is done. An important characteristic of these systems, is the possibility of sliding regimes, when the controlled system becomes invariant. An extension of Liapunov's second method is used for the stability study, and the analysis of the relationship between the sliding regime condition, and the stability of an invariant set, which is the sliding surface itself."]},{"key":"dc:title","label":"Title","values":["Estudo de sistemas de controle a estrutura variável"]}]}],"canonical_facts":{"dc:contributor.advisor":["Cunha, Nelson Ortegosa da"],"dc:creator":["Souza, Fernando Menezes Campello de"],"dc:date.accessioned":["2018-03-26T18:54:34Z"],"dc:date.available":["2026-05-16T03:05:25Z"],"dc:date.issued":["1973-11"],"dc:description.abstract":["Study of a class of adaptive control systems: the Variable Structure Control Systems. A control system is said to be of variable structure if the structure and/or the parameters of the controller varies, the parameters variations being discontinuous, depending on the state, and/or the perturbations of the controlled system. For this study, some results obtained by Fillipov about the differential equations with discontinuous right-hand side are used. For the case of single input-single output linear systems, a detailed analysis of the essential properties and advantages of variable structure control systems is done. An important characteristic of these systems, is the possibility of sliding regimes, when the controlled system becomes invariant. An extension of Liapunov's second method is used for the stability study, and the analysis of the relationship between the sliding regime condition, and the stability of an invariant set, which is the sliding surface itself."],"dc:identifier.uri":["http://hdl.handle.net/11422/3782"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Sistemas de controle","Equações diferenciais","Funções de Liapunov","Teoria do controle"],"dc:title":["Estudo de sistemas de controle a estrutura variável"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:10Z"}