Publications related to Robust Controller Design by Convex Optimization based on Finite Frequency Samples of Spectral Models

Frequency-domain controller design by linear programming

In this thesis, a new framework to design controllers in the frequency domain is proposed. The method is based on the shaping of the open-loop transfer function in the Nyquist diagram. A line representing a lower approximation for the crossover frequency a ...

EPFL2009

Compressed sensing imaging techniques for radio interferometry

Pierre Vandergheynst, Yves Wiaux, Gilles Puy, Laurent Jacques

Radio interferometry probes astrophysical signals through incomplete and noisy Fourier measurements. The theory of compressed sensing demonstrates that such measurements may actually suffice for accurate reconstruction of sparse or compressible signals. We ...

Wiley-Blackwell2009

Processor Speed Control with Thermal Constraints

Giovanni De Micheli, David Atienza Alonso, Srinivasan Murali

We consider the problem of adjusting speeds of multiple computer processors, sharing the same thermal environment, such as a chip or multichip package. We assume that the speed of each processor (and associated variables such as power supply voltage) can b ...

2009

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. I-Single-Input Systems

Dominique Bonvin, Benoît Chachuat, Sébastien Gros

A powerful approach for dynamic optimization in the presence of uncertainty is to incorporate measurements into the optimization framework so as to track the optimum. For nonsingular control problems, this can be done by tracking active constraints along b ...

2009

Model predictive path-following for constrained nonlinear systems

Timm Faulwasser, Benjamin Kern

We propose a model predictive control approach to path-following problems of constrained nonlinear systems. We directly consider input and state constraints. Furthermore, we introduce an extended corridor path-following problem, which allows to add spatial ...

IEEE2009

Detail-preserving fluid control

Mark Pauly

We propose a new fluid control technique that uses scale-dependent force control to preserve small-scale fluid detail. Control particles define local force fields and can be generated automatically from either a physical simulation or a sequence of target ...

2009

Robust fixed-order H infinity Controller Design for Spectral Models by Convex Optimization

Alireza Karimi, Roland Longchamp, Gorka Galdos Sanz de Galdeano

A new approach for robust fixed-order

H_\infty

controller design by convex optimization is proposed. Linear time-invariant single-input single-output systems represented by a finite set of complex values in the frequency domain are considered. It is show ...

IEEE2008

Fixed-Order Controller Design for Systems with Polytopic Uncertainty Using LMIs

Alireza Karimi, Roland Longchamp, Hamid Khatibi

Convex parameterization of fixed-order robust stabilizing controllers for systems with polytopic uncertainty is represented as an LMI using KYP Lemma. This parameterization is a convex inner-approximation of the whole non- convex set of stabilizing control ...

2008

Temperature Control of High Performance Multicore Platforms Using Convex Optimization

Giovanni De Micheli, David Atienza Alonso, Luca Benini, Srinivasan Murali

With technology advances, the number of cores integrated on a chip and their speed of operation is increasing. This, in turn is leading to a significant increase in chip temperature. Temperature gradi- ents and hot-spots not only affect the performance of ...

2008

Frequency Domain Controller Design by Linear Programming Guaranteeing Quadratic Stability

Alireza Karimi, Roland Longchamp, Marc Kunze

In a recent work, a frequency method based on linear programming is proposed to design fixed-order linearly parameterized controllers for stable linear multi- model SISO systems. The method is based on the shaping of the open-loop transfer functions in the ...

IEEE2008

Robust Controller Design by Convex Optimization based on Finite Frequency Samples of Spectral Models

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Frequency-domain controller design by linear programming

Compressed sensing imaging techniques for radio interferometry

Processor Speed Control with Thermal Constraints

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. I-Single-Input Systems

Model predictive path-following for constrained nonlinear systems

Detail-preserving fluid control

Robust fixed-order H infinity Controller Design for Spectral Models by Convex Optimization

Fixed-Order Controller Design for Systems with Polytopic Uncertainty Using LMIs

Temperature Control of High Performance Multicore Platforms Using Convex Optimization

Frequency Domain Controller Design by Linear Programming Guaranteeing Quadratic Stability

Processor Speed Control with Thermal Constraints

Frequency-domain controller design by linear programming

Model predictive path-following for constrained nonlinear systems

Compressed sensing imaging techniques for radio interferometry

Frequency Domain Controller Design by Linear Programming Guaranteeing Quadratic Stability

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. I-Single-Input Systems

Detail-preserving fluid control

Robust fixed-order H infinity Controller Design for Spectral Models by Convex Optimization

Fixed-Order Controller Design for Systems with Polytopic Uncertainty Using LMIs

Temperature Control of High Performance Multicore Platforms Using Convex Optimization