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Analysis and Control with Performance of Piecewise Affine and Hybrid Systems

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Development of applications in WAMS and WACS: an international cooperation experience

Natalia Bondareva, Natalya Borodina

This paper focuses on applications in the area of WAMS (wide area measurement systems) and WACS (wide area control systems) development. A main issue is the report of an international cooperation oriented to test new algorithms and methods in this field. A ...

2006

Perturbation rejection control strategy for OWL

Ljubisa Miskovic, Babak Sedghi

The control system of the ESO 100 m telescope (OWL) has to reject slow and fast perturbations in several subsystems. In this paper we focus on the wind rejection control strategies for two subsystems: the main axes and the segmented mirror. It is shown tha ...

2006

Design and Control of an Indoor Coaxial Helicopter

Roland Siegwart, Gilles Caprari

This paper presents the design and preliminary control of an indoor coaxial helicopter �CoaX� based on a concept of hybrid active and passive control. The robot is capable of passive roll and pitch stabilization against small disturbances while a ...

2006

Polyhedral Tools for Control

Colin Neil Jones

Polyhedral operations play a central role in constrained control. One of the most fundamental operations is that of projection, required both by addition and multiplication. This thesis investigates projection and its relation to multi-parametric linear op ...

University of Cambridge2005

New Hamiltonian eigensolvers with applications in control

Daniel Kressner

A new MATLAB toolbox for computing eigenvalues and invariant subspaces of Hamiltonian and skew-Hamiltonian matrices is described. Based on orthogonal symplectic decompositions, the implemented algorithms are both numerically backward stable and structure-p ...

2005

Control design of hybrid systems via dehybridization

Babak Sedghi

Hybrid dynamical systems are those with interaction between continuous and discrete dynamics. For the analysis and control of such systems concepts and theories from either the continuous or the discrete domain are typically readapted. In this thesis the i ...

EPFL2003

Structure preservation: a challenge in computational control

Daniel Kressner, Volker Mehrmann

Current and future directions in the development of numerical methods and numerical software for control problems are discussed. Major challenges include the demand for higher accuracy, robustness of the method with respect to uncertainties in the data or ...

Elsevier2003

Upgrade of the present JET shape and vertical stability controller

Jonathan Bryan Lister

The development of linear model of the present JET (Joint European Torus) electromagnetic system has allowed the design of an optimized Plasma Shape Controller. Quite extreme plasma boundaries (elongation k = 1.9 and triangularity = 0.6) are shown ...

2003

Lagrange Stability and Performance Analysis of Discrete-Time Piecewise Affine Systems with Logic States

Giancarlo Ferrari Trecate

In this paper we consider discrete-time piecewise affine hybrid systems with boolean inputs, outputs and states and show that they can be represented in a logic canonical form where the logic variables influence the switching between different submodels bu ...

2003

Predictive Control of Fast Unstable and Nonminimum-phase Nonlinear Systems

Dominique Bonvin, Philippe Müllhaupt, Kahina Guemghar

Predictive Control of Unstable Nonminimum-phase Systems K. Guemghar, B. Srinivasan, Ph. Mullhaupt, D. Bonvin ´ Institut d’Automatique, Ecole Polytechnique F´d´rale de Lausanne, ee CH-1015 Lausanne, Switzerland. Predictive control is a very eﬀective approac ...

2002