1 resultado para 100602 Input Output and Data Devices
em Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP)
Filtro por publicador
- JISC Information Environment Repository (4)
- Aberdeen University (4)
- Abertay Research Collections - Abertay University’s repository (2)
- Aberystwyth University Repository - Reino Unido (3)
- Academic Archive On-line (Karlstad University; Sweden) (1)
- Academic Archive On-line (Mid Sweden University; Sweden) (1)
- Academic Research Repository at Institute of Developing Economies (22)
- Acceda, el repositorio institucional de la Universidad de Las Palmas de Gran Canaria. España (3)
- Adam Mickiewicz University Repository (1)
- AMS Campus - Alm@DL - Università di Bologna (4)
- AMS Tesi di Dottorato - Alm@DL - Università di Bologna (10)
- AMS Tesi di Laurea - Alm@DL - Università di Bologna (1)
- Aquatic Commons (20)
- ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (4)
- Archimer: Archive de l'Institut francais de recherche pour l'exploitation de la mer (1)
- Archive of European Integration (63)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (10)
- Aston University Research Archive (48)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (6)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (1)
- Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (2)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (24)
- Boston University Digital Common (5)
- Bucknell University Digital Commons - Pensilvania - USA (2)
- Bulgarian Digital Mathematics Library at IMI-BAS (7)
- CaltechTHESIS (11)
- Cambridge University Engineering Department Publications Database (42)
- CentAUR: Central Archive University of Reading - UK (38)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (17)
- Cochin University of Science & Technology (CUSAT), India (3)
- Comissão Econômica para a América Latina e o Caribe (CEPAL) (14)
- CORA - Cork Open Research Archive - University College Cork - Ireland (9)
- Corvinus Research Archive - The institutional repository for the Corvinus University of Budapest (4)
- CUNY Academic Works (2)
- Dalarna University College Electronic Archive (2)
- Deakin Research Online - Australia (55)
- Department of Computer Science E-Repository - King's College London, Strand, London (4)
- DI-fusion - The institutional repository of Université Libre de Bruxelles (1)
- Digital Commons - Michigan Tech (3)
- Digital Commons at Florida International University (13)
- Digital Peer Publishing (1)
- DigitalCommons@The Texas Medical Center (2)
- Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
- DRUM (Digital Repository at the University of Maryland) (3)
- Duke University (5)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (4)
- Greenwich Academic Literature Archive - UK (5)
- Harvard University (3)
- Helda - Digital Repository of University of Helsinki (14)
- Indian Institute of Science - Bangalore - Índia (42)
- Instituto Politécnico do Porto, Portugal (3)
- Lume - Repositório Digital da Universidade Federal do Rio Grande do Sul (1)
- Massachusetts Institute of Technology (5)
- Ministerio de Cultura, Spain (2)
- National Center for Biotechnology Information - NCBI (1)
- Nottingham eTheses (1)
- Open Access Repository of Association for Learning Technology (ALT) (1)
- Plymouth Marine Science Electronic Archive (PlyMSEA) (5)
- Publishing Network for Geoscientific & Environmental Data (16)
- QSpace: Queen's University - Canada (1)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (39)
- Queensland University of Technology - ePrints Archive (136)
- RCAAP - Repositório Científico de Acesso Aberto de Portugal (2)
- Repositório Científico da Universidade de Évora - Portugal (1)
- Repositório Científico do Instituto Politécnico de Lisboa - Portugal (1)
- Repositório digital da Fundação Getúlio Vargas - FGV (1)
- Repositório Institucional da Universidade de Aveiro - Portugal (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (12)
- Repositorio Institucional Universidad de Medellín (1)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (1)
- SAPIENTIA - Universidade do Algarve - Portugal (1)
- School of Medicine, Washington University, United States (2)
- Scientific Open-access Literature Archive and Repository (1)
- Universidad de Alicante (2)
- Universidad del Rosario, Colombia (1)
- Universidad Politécnica de Madrid (23)
- Universidade Complutense de Madrid (1)
- Universidade Técnica de Lisboa (1)
- Universitat de Girona, Spain (2)
- Universitätsbibliothek Kassel, Universität Kassel, Germany (5)
- Université de Lausanne, Switzerland (2)
- Université de Montréal, Canada (2)
- Université Laval Mémoires et thèses électroniques (1)
- University of Canberra Research Repository - Australia (1)
- University of Connecticut - USA (6)
- University of Michigan (55)
- University of Queensland eSpace - Australia (16)
- University of Southampton, United Kingdom (7)
- University of Washington (3)
- WestminsterResearch - UK (3)
Resumo:
A novel technique for selecting the poles of orthonormal basis functions (OBF) in Volterra models of any order is presented. It is well-known that the usual large number of parameters required to describe the Volterra kernels can be significantly reduced by representing each kernel using an appropriate basis of orthonormal functions. Such a representation results in the so-called OBF Volterra model, which has a Wiener structure consisting of a linear dynamic generated by the orthonormal basis followed by a nonlinear static mapping given by the Volterra polynomial series. Aiming at optimizing the poles that fully parameterize the orthonormal bases, the exact gradients of the outputs of the orthonormal filters with respect to their poles are computed analytically by using a back-propagation-through-time technique. The expressions relative to the Kautz basis and to generalized orthonormal bases of functions (GOBF) are addressed; the ones related to the Laguerre basis follow straightforwardly as a particular case. The main innovation here is that the dynamic nature of the OBF filters is fully considered in the gradient computations. These gradients provide exact search directions for optimizing the poles of a given orthonormal basis. Such search directions can, in turn, be used as part of an optimization procedure to locate the minimum of a cost-function that takes into account the error of estimation of the system output. The Levenberg-Marquardt algorithm is adopted here as the optimization procedure. Unlike previous related work, the proposed approach relies solely on input-output data measured from the system to be modeled, i.e., no information about the Volterra kernels is required. Examples are presented to illustrate the application of this approach to the modeling of dynamic systems, including a real magnetic levitation system with nonlinear oscillatory behavior.