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Abstract: Nonlinear systems with norm bounded time-varying uncertainties are investigated in this work. Conditions for robust stability in the form of linear matrix inequalities for designing robust control gain state feedback that the same time stabilizes the system and maximizes the limit of uncertainty of the non-linear term are established based on quadratic Lyapunov functions and an procedure here propoded. The conditions obtained are extended to a model of decentralized control. Numerical examples are presented and compared with results from the literature, highlighting the advantages of the proposed methodology. Keywords: Robust Control, Linear Matrix Inequalities, Decentralized Robust Control, Robust Stabilization Controle seletivo com critério H-2 de sistemas nebulosos Takagi-Sugeno Eduardo Stockler Tognetti, Pedro Luis Dias Peres, Ricardo Coracao De Leao F De Oliveira In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Sep-2010 pp:4118-4125 Abstract: This paper presents new results concerning the design of state feedback controllers for continuoustime Takagi- Sugeno (T-S) fuzzy systems via fuzzy Lyapunov functions. A new modeling is proposed to represent the membership functions of T-S fuzzy systems, with the Cartesian product of simplexes, called multi-simplex. Linear matrix inequality relaxations based on homogeneous polynomials matrices are provided for controller design with an H2 guaranteed cost. The time-derivatives of the membership functions are modeled as belonging to a polytope, and the bounds of the variation rate are taken into account in the model. As one of the main contributions, the method allows to synthesize control gains depending only on some premise variables, selected by the designer. Numerical experiments illustrates the flexibility and advantages of the proposed method. Keywords: Takagi-Sugeno fuzzy systems, H2 control, Continuous-time systems, Linear matrix inequalities. Controle, sujeito a restrições, de sistemas lineares discretos com saltos markovianos e com ruídos multiplicativo e aditivo Walter Furloni, Jo˜ao Bosco Ribeiro do Val, Alessandro N. Vargas In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Set-2010 pp:2910-2917 Abstract: The purpose of this article is to present a simple method to solve the problem of stochastic optimal constrained control of discrete-time Markov jumps linear systems (MJLS) with multiplicative and additive noises. Constraints appear on system state and input control variables in terms of their first two moments. A simple linear state feedback controller is considered independently of the Markov state information availability and it is determined by optimizing a quadratic performance index. The solution is based on a numeric method performing a variational search using LMI formulation. Additionally, it is showed that the proposed methodology may be applied to solve porfolio dynamic selection problems in financial area, adding another tool to solve the classic problem of mean × variance. Keywords: Markov jump systems, multiplicative noise, stochastic optimal constrained control, mean × variance control, linear matrix inequalities Decomposição de Dantzig-/wolfe para Problemas com Parâmetros Fuzzy Jussara Rodrigues Ciappina, Akebo Yamakami In: XXXIII Congresso Nacional de Matemática Aplicada e Computacional (CNMAC) Aguas de Lindoia, SP Set-2010 pp:1-6 Abstract: Este trabalho apresenta uma proposta para resolver problemas com parâmetros fuzzy baseada no método clássico de decomposição de Dantzig-Wolfe. Métodos utilizando técnicas de decomposição tratam problemas que apresentam uma estrutura especial no conjunto das restrições. Um exemplo com tal estrutura é o problema de fluxo multiproduto fuzzy. O algoritmo proposto visa encontrar a solução ótima trabalhando com o problema na forma fuzzy, durante todo procedimento de resolução. Keywords: Fuzzy, Otimização, Decomposição, Fluxo Multiproduto Fuzzy Design and experimental validation of a robust H-2 controller applied to a boost converter Vinícius Foletto Montagner, Luiz Antonio Maccari Junior, Ricardo Coracao De Leao F De Oliveira In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Sep-2010 pp:1549-1554 Abstract: This paper proposes the design and experimental validation of a robust H2 control technique for a boost converter. The design procedure adopts a linearized model of the converter affected by time-varying uncertain parameters with a polytopic structure. Using this model, an optimal H2 state feedback controller (under quadratic stability) is synthesized through convex optimization based on linear matrix inequalities. The control gains ensure closed-loop stability and an H2 guaranteed cost for the entire set of uncertainties and also for arbitrary parametric variation inside this set. A boost converter of nominal power equal to 100W is used for the design of the controller. The input voltage, the operating point duty cycle and the load are considered as uncertain and arbitrarily time-varying parameters. The control gains obtained for this converter produce good simulation and experimental results. The quality of the results is measured by means of fast transient responses and small overshoots and undershoots on the output voltage. The experimental validation prove the viability of practical application of an H2 robust control technique for this plant. Keywords: Boost converter, robust control, optimal control, convex optimization, linear matrix inequalities. Evolving Arbitrarily Connected Feedforward Neural Networks via Genetic Algorithms Wilfredo Jaime Puma Villanueva, Fernando Jose Von Zuben In: 11st Brazilian Symposium on Neural Networks - SBRN - ISBN: 978-0-7695-4210 São Bernardo do Campo-SP Oct-2010 pp:127-132 Abstract: Though several approaches have already been proposed in the literature to evolve neural network topologies for solving a wide range of machine learning tasks, this paper presents an alternative one, capable of evolving arbitrarily connected feedforward neural networks (ACFNNs), including linear and nonlinear neurons. A genetic algorithm is conceived to adjust the topology and also to perform variable selection. The weights of the obtained neural networks, with arbitrary topologies, are adjusted using a simple descent gradient algorithm. The purpose is to obtain high-quality and parsimonious predictors for two real-world and one synthetic time series. The obtained results are compared with the ones produced by traditional MLP models and Mixtures of Heterogeneous Experts (MHEs). Keywords: Neural networks, arbitrary architectures, genetic algorithms 62 Sinopse da FEEC
Filtragem de Medidas Transmitidas por Rede Usando Sistemas com Saltos Markovianos a Tempo Discreto Alim Gonçalves, André R. Fioravanti, José Geromel In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Set-2010 pp:782 - 787 Abstract: This paper addresses how several models available for a measurement transmission network channel, like the generalized Gilbert-Elliot, Fritchman or McCullough ones, from a linear and time invariant plant to its filter can be incorporated into the more general framework of Markov Jump Linear Systems filtering with partially known transition probabilities. Combined with transmission protocols that allow package failure recognition, the particular concept of cluster availability of the Markov modes becomes appealing. An example shows the applicability of the results. The design of the filter is done using Linear Matrix Inequalities. Keywords: Discrete-time Markov jump linear systems, Network filtering, Linear matrix inequalities. Filtragem robusta H2 e H∞ usando LMIs para sistemas incertos contínuos politópicos invariantes no tempo Márcio Júnior Lacerda, Pedro Luis Dias Peres, Ricardo Coracao De Leao F De Oliveira In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Sep-2010 pp:4110-4117 Abstract: This paper presents new linear matrix inequality conditions for H 2 and H∞ robust filter design for continuoustime polytopic systems with time-invariant uncertainty. Thanks to the use of a larger number of slack variables, the proposed conditions are less conservative than the existing conditions in the literature, containing recently published results as particular cases. Examples illustrate the better performance of the designed filters using the proposed approach when compared to other methods for robust filter design available in the literature. Keywords: Continuous-time uncertain systems, Robust H2 and H∞ filtering, Linear matrix inequalities Filtro de partículas aplicado ao rastreamento de alvos manobrantes utilizando a velocidade radial Victor Baptista Frencl, João Bosco Ribeiro do Val In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Set-2010 pp:1763-1770 Abstract: The objective of this paper is to study the particle filter, together with the BLUE filter, applied to the problem of maneuvering tracking targets in space. Based on this study, we propose a method to obtain the angular velocity of the target in constant turn trajectories by using the radial velocity information from the observation vector. In the end, we will show some tests results to evaluate the performance of the proposed filter, comparing them with some tests results with IMM filter banks. Keywords: Target Tracking, Dynamic Models, Observation Models, Particle Filter, BLUE filter, Radial Velocity, Angular Velocity Full Rate and Full Diversity Codes for the 2x2 Coherent Multiple-Input Multiple-Output (MIMO) Systems Edson Donizete de Carvalho, Antonio Aparecido de Andrade, Reginaldo Palazzo Jr., Jozué Vieira Filho In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Sep-2010 pp:2649- 2654 Abstract: In this work we present a new class of space-time block codes based on arithmetic Fuchsian groups.This new class of codes satis_es the property full-diversity, linear dispersion and full-rate. Keywords: MIMO-systems, space-time code, diversity, division ring, arithmetic fuchsian groups Global Maximization of a Generalized Concave Multiplicative Problem in the Outcome Space Alireza Mohebi Ashtiani, Paulo Augusto Valente Ferreira In: XXXIII Congresso Nacional de Matemática Aplicada e Computacional (CNMAC) Aguas de Lindoia, SP Sep-2010 pp:1-6 Abstract: In this work we proposed an outcome space approach for globally solving generalized concave multiplicative problems, a special class of nonconvex problems which involves the maximization of a finite sun of products of concave functions over a nonempty compact convex set. It is shown that this nonconvex maximization problem can be reformulated as an indefinite quadratic problem with infinitely many linear inequality constraints. A relaxation-constraint enumeration algorithm is used to solve such indefinite quadratic programming problem. A computational experience is reported. Keywords: Global optimization, multiplicative programming, convex analysis, indefinite quadratic programming, Max-plus Linear Observer: Application to Manufacturing Systems. Laurent Hardouin, Cristina A. Maia, Bertrand Cottenceau, Rafael Santos Mendes In: 10th International Workshop on Discrete Event Systems- WODES2010 Berlin – Germany Sep-2010 pp:1-7 Abstract: This paper deals with the observer design for maxplus linear systems. The approach is based on the residuation theory which is suitable to deal with linear mapping inversion in idempotent semiring. An illustrative example allows to discuss about a practical implementation. Keywords: Discrete Event Dynamics Systems, Idempotent Semirings, Max-Plus Algebra, Residuation Theory, Timed Event Graphs, Dioid, Observer, State Estimation. Modelo Adaptativo Nebuloso para Detecção e Diagnóstico de Falhas André Paim Lemos, Walmir Matos Caminhas, Fernando Antonio Campos Gomide In: XVIII Congresso Brasileiro de Automática (CBA 2010)- Antonio Padilha Feltrin(Ed.) - ISBN: 978-85-61507-02-2 SBA - Sociedade Brasileira de Automática – Bonito(MS) - Brasil Sep-2010 pp:3284-3291 Abstract: This paper introduces a new online approach for fault detection and diagnosis. The approach is an evolving fuzzy classifier that incorporates new operational information using incremental unsupervised clustering algorithm. The efficiency of the approach is verified in fault detection and diagnosis of an induction machine. Experimental results show that the approach is competitive for fault diagnosis of dynamic systems especially when there is no complete information about failure modes. Keywords: Fault Detection and Diagnosis, Evolving Fuzzy Systems Modelos Baseados em Conjuntos Aproximados Carlos Alberto Murari Pinheiro, Fernando Antonio Campos Gomide, Otávio Augusto Salgado Carpinteiro, Isaías Lima Academic Bulletin of FEEC-Unicamp 63
Page 1 and 2: Editorial This is the thrird issue
Page 3 and 4: objects to be cut according to a cu
Page 5 and 6: classical morphological segmentatio
Page 7 and 8: functions (e.g., medium access cont
Page 9: Abstract: Este trabalho mostra a ev
Page 13 and 14: Keywords: Static output feedback, H
Page 15 and 16: Electronic, Micro-electronic, Opto-
Page 17 and 18: Atmospheric Pressure in the Amazon
Page 19 and 20: árvore pulmonar. Obstruções tota
Page 21 and 22: Keywords: Engenharia Clínica, Proj
Page 23 and 24: Recife, PE Oct-2010 pp:1-5 Abstract
Page 25 and 26: feasibility and usefulness are vali
Page 27 and 28: Abstract: This work analyzes the co
Page 29 and 30: Métodos de Pontos Interiores Aplic
Page 31 and 32: Keywords: Localização de faltas,
Page 33 and 34: Keywords: amplificador óptico a se
Page 35 and 36: Macrobends effects in single-mode g
Page 37 and 38: intricate and impracticable, becaus
Page 39 and 40: 5 - On Building Meaning: A Biologic
Page 41 and 42: new cryptographic protocols, includ
Page 43 and 44: OPTIMAL CONTRACTS ALLOCATION FOR EL
Page 45 and 46: COMPACT FORWARDING: A PROBABILISTIC
Page 47 and 48: Acknowledgement Authors With great
Page 49 and 50: Luiz Carlos Barbosa Luiz Carlos Kre

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