State Estimator Design
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. State estimation of chemical engineering systems tending to multiple solutions
A well-evaluated state covariance matrix avoids error propagation due to divergence issues and, thereby, it is crucial for a successful state estimator design. In this paper we investigate the performance of the state covariance matrices used in three unconstrained Extended Kalman Filter (EKF) formulations and one constrained EKF formulation (CEKF). As bench
Braz. J. Chem. Eng.. Publicado em: 2014-09
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2. Design of a passive nonlinear observer and a backstepping controller for surface vessels. / Projeto de um observador passivo não-linear e de um controlador backstepping para navios de superfície.
Dynamic Positioning Systems (DPS) are control systems used to maintain the vessel on a desired position or pre-defined path exclusively by means of active thrusters. A DPS can be separated into a set of dedicated modules with designated tasks. The most significant modules are the position and heading measurement systems, the state estimator, the controller a
Publicado em: 2010
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3. Abordagem sistemática para construção e sintonia de estimadores de estados não-lineares
Este trabalho apresenta metodologias para a construção e a sintonia de estimadores de estados não-lineares visando aplicações práticas. O funcionamento de um estimador de estados não-linear está calcado em quatro etapas básicas: (a) sintonia; (b) predição; (c) atualização da matriz de covariância de estados; (d) filtragem e suavização dos est
Publicado em: 2010
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4. Estimadores robustos para sistemas lineares e não-lineares
The main focus of this dissertation is to develop and analyze robust estimators for linear and nonlinear discrete time systems subject to uncertainties. The design of the estimators, using the Riccati equation approach, leads to a guaranteed cost for all allowed uncertainties within a known set. Assuming norm bounded uncertainties, it is proposed a general r
Publicado em: 2009
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5. Design of a multi-model observer-based estimator for Fault Detection and Isolation (FDI) strategy: application to a chemical reactor
This study presents a FDI strategy for nonlinear dynamic systems. It shows a methodology of tackling the fault detection and isolation issue by combining a technique based on the residuals signal and a technique using the multiple Kalman filters. The usefulness of this combination is the on-line implementation of the set of models, which represents the norma
Brazilian Journal of Chemical Engineering. Publicado em: 2008-12
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6. Active flutter suppression in a 2-D airfoil using linear matrix inequalities techniques
Flutter is an in-flight vibration of flexible structures caused by energy in the airstream absorbed by the lifting surface. This aeroelastic phenomenon is a problem of considerable interest in the aeronautic industry, because flutter is a potentially destructive instability resulting from an interaction between aerodynamic, inertial, and elastic forces. To o
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-03