Publications related to Fixed-order H-infinity and H-2 Controller Design for Continuous-time Polytopic Systems: An LMI-based Approach

Fixed-order LPV Controller Design for Rejection of a Sinusoidal Disturbance with Time-varying Frequency

A new method for the design of fixed-order Linear Parameter Varying (LPV) controllers with polytopic representation for LTI plants is proposed. The stability constraints for the closed-loop system are presented through a set of Linear Matrix Inequalities ( ...

2012

Data-driven model reference control with asymptotically guaranteed stability

Dominique Bonvin, Alireza Karimi, Klaske van Heusden

This paper presents a data-driven controller tuning method that includes a set of constraints for ensuring closed-loop stability. The approach requires a single experiment and can also be applied to nonminimum-phase or unstable systems. The tuning scheme u ...

Wiley-Blackwell2011

Fixed-order H-infinity controller design for systems with ellipsoidal parametric uncertainty

Alireza Karimi, Arash Sadeghzadeh

In this paper, fixed-order robust H-infinity controller design for systems with ellipsoidal parametric uncertainty based on parameter dependent Lyapunov functions is studied. Using the concept of Strictly Positive Realness (SPRness) of transfer functions, ...

Taylor & Francis2011

Fixed-Order H-infinity Controller Design via Convex Optimization Using an Alternative to Youla Prameterization

Alireza Karimi, Hamid Khatibi

All H-infinity controllers of a SISO LTI system are parameterized thanks to the relation between Bounded Real Lemma and Positive Real Lemma and a new concept of strict positive realness of two transfer functions with the same Lyapunov matrix in the matrix ...

Institute of Electrical and Electronics Engineers2010

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

Alireza Karimi, Roland Longchamp, Gorka Galdos Sanz de Galdeano

Some frequency-domain controller design problems are solved using a finite number of frequency samples. Consequently, the performance and stability conditions are not guaranteed for the frequencies between the frequency samples. In this paper, all possible ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Fixed-Order Robust Controller Design by Convex Optimization Using Spectral Models

Gorka Galdos Sanz de Galdeano

This thesis proposes a new method to design fixed-order controllers in frequency domain using convex optimization. The method is based on the shaping of open-loop transfer function in the Nyquist diagram with infinity norm constraints on weighted closed-lo ...

EPFL2010

Non-Iterative Data-Driven Model Reference Control

In model reference control, the objective is to design a controller such that the closed-loop system resembles a reference model. In the standard model-based solution, a plant model replaces the unknown plant in the design phase. The norm of the error betw ...

EPFL2010

Frequency-domain controller design by linear programming

Marc Kunze

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

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

Noniterative Data-driven Controller Tuning Using the Correlation Approach

Dominique Bonvin, Alireza Karimi, Klaske van Heusden

Data-driven controller tuning for model reference control problem is investigated. A new controller tuning scheme for linear time-invariant single- input single-output systems is proposed. The method, which is based on the correlation approach, uses a sing ...

2007

Fixed-order H-infinity and H-2 Controller Design for Continuous-time Polytopic Systems: An LMI-based Approach

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Fixed-order LPV Controller Design for Rejection of a Sinusoidal Disturbance with Time-varying Frequency

Data-driven model reference control with asymptotically guaranteed stability

Fixed-order H-infinity controller design for systems with ellipsoidal parametric uncertainty

Fixed-Order H-infinity Controller Design via Convex Optimization Using an Alternative to Youla Prameterization

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

Fixed-Order Robust Controller Design by Convex Optimization Using Spectral Models

Non-Iterative Data-Driven Model Reference Control

Frequency-domain controller design by linear programming

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

Noniterative Data-driven Controller Tuning Using the Correlation Approach

Data-driven model reference control with asymptotically guaranteed stability

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

Fixed-Order Robust Controller Design by Convex Optimization Using Spectral Models

Fixed-Order H-infinity Controller Design via Convex Optimization Using an Alternative to Youla Prameterization

Non-Iterative Data-Driven Model Reference Control

Frequency-domain controller design by linear programming

Noniterative Data-driven Controller Tuning Using the Correlation Approach

Fixed-order LPV Controller Design for Rejection of a Sinusoidal Disturbance with Time-varying Frequency

Fixed-order H-infinity controller design for systems with ellipsoidal parametric uncertainty

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