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

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

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

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

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

Music Onset Detection Based on Resonator Time Frequency Image

Marco Mattavelli, Giorgio Zoia, Ruohua Zhou

This paper describes a new method for music onset detection. The novelty of the approach consists mainly of two elements: the time–frequency processing and the detection stages. The resonator time frequency image (RTFI) is the basic time–frequency analysis ...

2008

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

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

Robust Controller Design by Linear Programming with Application to a Double-Axis Positioning System

Alireza Karimi, Roland Longchamp, Marc Kunze

A linear programming approach is proposed to tune fixed-order linearly parameterized controllers for stable LTI plants. The method is based on the shaping of the open-loop transfer function in the Nyquist diagram. A lower bound on the crossover frequency a ...

2007

Correlation-Based Tuning of Decoupling Multivariable Controllers

Dominique Bonvin, Alireza Karimi, Ljubisa Miskovic

The iterative data-driven method labelled Correlation-based Tuning (CbT) is considered in this paper for the tuning of linear time-invariant multivariable controllers. The approach allows one to tune some elements of the controller transfer function matrix ...

2007

Closed-loop identification of MIMO systems: a new look at identifiability and experiment design

Ljubisa Miskovic

This paper addresses a question raised by a leading expert in the identification of multivariable systems: “Is it necessary to excite all reference signals for the identification of a multivariable system operating in closed loop with a linear time-invaria ...

European Union Control Association2007

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

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

Model-Free Precompensator Tuning Based on the Correlation Approach

Frequency Domain Controller Design by Linear Programming Guaranteeing Quadratic Stability

Data-driven controller tuning with integrated stability constraint

Music Onset Detection Based on Resonator Time Frequency Image

Robust Loop Shaping Controller Design for Spectral Models by Quadratic Programming

Noniterative Data-driven Controller Tuning Using the Correlation Approach

Robust Controller Design by Linear Programming with Application to a Double-Axis Positioning System

Correlation-Based Tuning of Decoupling Multivariable Controllers

Closed-loop identification of MIMO systems: a new look at identifiability and experiment design

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

Music Onset Detection Based on Resonator Time Frequency Image

Frequency Domain Controller Design by Linear Programming Guaranteeing Quadratic Stability

Robust Controller Design by Linear Programming with Application to a Double-Axis Positioning System

Model-Free Precompensator Tuning Based on the Correlation Approach

Data-driven controller tuning with integrated stability constraint

Robust Loop Shaping Controller Design for Spectral Models by Quadratic Programming

Noniterative Data-driven Controller Tuning Using the Correlation Approach

Correlation-Based Tuning of Decoupling Multivariable Controllers

Closed-loop identification of MIMO systems: a new look at identifiability and experiment design