Publications related to Data-driven LPV Control for Micro-disturbance Rejection in a Hybrid Isolation Platform

Data-driven controller validation

Dominique Bonvin, Alireza Karimi, Klaske van Heusden

This paper proposes a data-driven test for closed-loop stability. The test is based on a non-conservative stability condition that can be veriﬁed without having to actually implement the controller. It uses a set of measurements from the plant but does not ...

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

On the Consistency of Certain Identification Methods for Linear Parameter Varying Systems

Alireza Karimi, Roland Longchamp, Mark Edward John Butcher

The consistency of certain identification methods for Linear Parameter Varying systems is considered. More precisely, methods for the identification of SISO input-output models are analysed. In order to perform a consistency analysis the application of erg ...

2008

Data-driven controller tuning with integrated stability constraint

Dominique Bonvin, Alireza Karimi, Klaske van Heusden

This paper presents a data-driven controller-tuning algorithm that includes a sufficient condition for closed-loop stability. This stability condition is defined by a set of convex constraints on the Fourier transform of specific auto- and cross-correlatio ...

IEEE2008

Model-Free Precompensator Tuning Based on the Correlation Approach

Alireza Karimi, Roland Longchamp, Mark Edward John Butcher

High performance output tracking can be achieved by precompensator or feedforward controllers based on the inverse of either the closed-loop system or the plant model, respectively. However, it has been shown that these inverse controllers can adversely af ...

2008

Preferential estimation

Levente Bodizs

State estimation is a necessary component of advanced monitoring and control techniques, since these techniques often require information that is too expensive or impossible to obtain from direct measurements. The objective of estimation is the reconstruct ...

EPFL2008

Identifiability and informative experiments in open and closed-loop identification

Ljubisa Miskovic

This chapter takes a new look at the concept of identifiability and of informative experiments for linear time-invariant systems, both in open-loop and in closed-loop identification. Some readers might think that everything has been said and written about ...

Springer-Verlag2007

Robust Loop Shaping Controller Design for Spectral Models by Quadratic Programming

Alireza Karimi, Roland Longchamp, Gorka Galdos Sanz de Galdeano

A quadratic programming approach is proposed to tune fixed-order linearly parameterized controllers for stable LTI plants represented by spectral models. The method is based on the shaping of the open-loop or closed-loop frequency functions in the Nyquist ...

2007

Robust Pole Placement of Systems with Polytopic Uncertainty Via Convex Optimization

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 controll ...

2007

Data-driven LPV Control for Micro-disturbance Rejection in a Hybrid Isolation Platform

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Data-driven controller validation

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

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

On the Consistency of Certain Identification Methods for Linear Parameter Varying Systems

Data-driven controller tuning with integrated stability constraint

Model-Free Precompensator Tuning Based on the Correlation Approach

Preferential estimation

Identifiability and informative experiments in open and closed-loop identification

Robust Loop Shaping Controller Design for Spectral Models by Quadratic Programming

Robust Pole Placement of Systems with Polytopic Uncertainty Via Convex Optimization

On the Consistency of Certain Identification Methods for Linear Parameter Varying Systems

Data-driven controller validation

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

Model-Free Precompensator Tuning Based on the Correlation Approach

Robust Pole Placement of Systems with Polytopic Uncertainty Via Convex Optimization

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

Data-driven controller tuning with integrated stability constraint

Preferential estimation

Identifiability and informative experiments in open and closed-loop identification

Robust Loop Shaping Controller Design for Spectral Models by Quadratic Programming