Linear Matrix Inequality Lmi
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Synthesis of Controllers for Continuous-Time Delay Systems with Saturating Controls via LMI's
The stabilization of linear continuous-time systems with time delay in the state and subject to saturating controls is addressed. Sufficient conditions obtained via a linear matrix inequality (LMI) formulation are stated to guarantee both the local stabilization and the satisfaction of some performance requirements. The method of synthesis consists in determ
Publicado em: 2011
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2. Antiwindup design with guaranteed regions of stability : an LMI-based approach
This note addresses the design of antiwindup gains for obtaining larger regions of stability for linear systems with saturating inputs. Considering that a linear dynamic output feedback has been designed to stabilize the linear system (without saturation), a method is proposed for designing an antiwindup gain that maximizes an estimate of the basin of attrac
Publicado em: 2011
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3. Stability analysis and stabilization of systems presenting nested saturations
This note addresses the problems of stability analysis and stabilization of systems presenting nested saturations. Depending on the open-loop stability assumption, the global stability analysis and stabilization problems are considered. In the (local) analysis problem, the objective is the determination of estimates of the basin of attraction of the system.
Publicado em: 2011
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4. Local stabilization of linear systems under amplitude and rate saturating actuators
This note addresses the problem of local stabilization of linear systems subject to control amplitude and rate saturation. Considering the actuator represented by a first-order system subject to input and state saturation, a condition for the stabilization of an a priori given set of admissible initial states is formulated from certain saturation nonlinearit
Publicado em: 2011
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5. Projeto de leis de controle robusto do tipo PSC via realimentação de estados aplicada a um sistema UPS
Esta dissertação apresenta o desenvolvimento e a implementação de uma estratégia alternativa para o controle da tensão de saída em Fontes Ininterruptas de Energia (também chamadas de UPS - Uninterruptible Power Supply). Esta estratégia é denominada Controlador Proporcional, Senoidal e Cossenoidal (PSC). Os ganhos deste controlador são obtidos atra
Publicado em: 2009
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6. Síntese de controladores robustos H2/H[infinito] D- estáveis via algoritmos evolutivos : uma abordagem LMI
This work is concerned with the mixed H2/H1 robust control problem combined with robust D−stability in linear matrix inequality (LMI) regions. Continuous-time linear systems subject to polytopic parametric uncertainties are studied. Based on Evolutionary Algorithms and LMIs, an hybrid algorithm is presented for numerical computation of a robust fixed-o
Publicado em: 2006
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7. Robust predictive control of a gasoline debutanizer column
This paper studies the application of Model Predictive Control to moderately nonlinear processes. The system used in this work is an industrial gasoline debutanizer column. The paper presents two new formulations of MPC: MMPC (Multi-Model Predictive Controller) and RSMPC (Robust Stable MPC). The approach is based on the concepts of Linear Matrix Inequalities
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
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8. New robust stable MPC using linear matrix inequalities
This paper addresses the stability of Model Predictive Control (MPC) with output feedback. The proposed controller uses a new state-space formulation of the system, and the control problem is presented as an LMI optimization problem. The stability condition for the closed loop is included as a Lyapunov inequality. The resulting optimization problem becomes n
Brazilian Journal of Chemical Engineering. Publicado em: 2000-03
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9. CONTROL PROBLEM SOLUTIONS BY FREQUENCY DEPENDENT BMIS AND LMIS / SOLUÇÃO DE PROBLEMAS DE CONTROLE VIA BMIS E LMIS DEPENDENTES DA FREQÜÊNCIA
In this thesis, it is proposed and analysed in terms of the global-convergence property a new algorithm for solving quadratic optimisation problems under either a BMI (bilinear matrix inequality) or a frequency-dependent LMI (linear matrix inequality) constraints. These problems are of special interest in the control literature a some very important control
Publicado em: 2000