Publications related to A Data-Driven Method for Computing Fixed-Structure Low-Order Controllers With H∞ Performance

Study of model predictive control formulations for an air-to- water heat pump system

This paper investigates the influence of the choice of the cost function in the optimal control formulation for an air-to-water heat pump system. The aim is to minimize, under given thermal comfort requirements, the electricity consumption which is calcula ...

2010

An Optimal Algorithm for Reconstructing Images from Binary Measurements

Martin Vetterli, Luciano Sbaiz, Yue Lu, Feng Yang

We have studied a camera with a very large number of binary pixels referred to as the gigavision camera or the gigapixel digital film camera. Potential advantages of this new camera design include improved dynamic range, thanks to its logarithmic sensor re ...

2010

Fast hard thresholding with Nesterov's gradient method

Volkan Cevher, Sina Jafarpour

We provide an algorithmic framework for structured sparse recovery which unifies combinatorial optimization with the non-smooth convex optimization framework by Nesterov [1, 2]. Our algorithm, dubbed Nesterov iterative hard-thresholding (NIHT), is similar ...

2010

Modifier-adaptation methodology for real-time optimization

Alejandro Gabriel Marchetti

The process industries are characterized by a large number of continuously operating plants, for which optimal operation is of economic importance. However, optimal operation is particularly difficult to achieve when the process model used in the optimizat ...

EPFL2009

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

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

Real-Time Optimization via Adaptation and Control of the Constraints

Dominique Bonvin, Benoît Chachuat, Alejandro Gabriel Marchetti

In the framework of real-time optimization, measurements are used to compensate for effects of uncertainty. The main approach uses measurements to update the parameters of a process model. In contrast, the constraint-adaptation scheme uses the measurements ...

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

Robust Control of Polytopic Systems by Convex Optimization

Alireza Karimi, Roland Longchamp, Hamid Khatibi

Robust control synthesis of linear time-invariant SISO polytopic systems is investigated using the polynomial approach. A convex set of all stabilizing controllers for a polytopic system is given over an infinite-dimensional space. A finite-dimensional app ...

2007

A Data-Driven Method for Computing Fixed-Structure Low-Order Controllers With H∞ Performance

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Study of model predictive control formulations for an air-to- water heat pump system

An Optimal Algorithm for Reconstructing Images from Binary Measurements

Fast hard thresholding with Nesterov's gradient method

Modifier-adaptation methodology for real-time optimization

Processor Speed Control with Thermal Constraints

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

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

Real-Time Optimization via Adaptation and Control of the Constraints

Temperature Control of High Performance Multicore Platforms Using Convex Optimization

Robust Control of Polytopic Systems by Convex Optimization

Modifier-adaptation methodology for real-time optimization

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

Robust Control of Polytopic Systems by Convex Optimization

Temperature Control of High Performance Multicore Platforms Using Convex Optimization

Study of model predictive control formulations for an air-to- water heat pump system

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

An Optimal Algorithm for Reconstructing Images from Binary Measurements

Fast hard thresholding with Nesterov's gradient method

Processor Speed Control with Thermal Constraints

Real-Time Optimization via Adaptation and Control of the Constraints