International Workshop on Design and Optimisation of restricted Complexity Controllers

Sponsored by
Centre National de la Recherche Scientifique (CNRS),
Departement des Sciences et Technologies de l’Information et de la Communication (STIC)

with the support of
Laboratoire d’Automatique de Grenoble (LAG)
Institut National Polytechnique de Grenoble (INPG)
Conseil Général de l’Isère

Scientific Committee


Local Organising Committee

Marie-Rose ALFARA


In many industrial applications there are strong constraints on the complexity of the controller which can effectively be implemented. Therefore it is very important to develop and evaluate the design techniques and the controller reduction techniques for obtaining high performance controllers of low complexity.

The objective of the international workshop dedicated to “Design and optimization of restricted complexity controllers” is to give a view of the current state of the art in the design and optimization of restricted complexity controllers. All steps of a control design problem from data acquisition, modeling and identification, robust controller design, controller evaluation and final tuning in relation with the objective of obtaining the simplest controller which will achieve the desired performance will be discussed. Results on a related real- time benchmark problem (control of an active suspension) obtained by various contributors will also be presented and comparatively evaluated. The proceedings of the workshop include the papers (regular papers and tutorials) to be presented. The final program can be found also at the workshop web site. A round table is scheduled as well as a demonstration of the active suspension (the benchmark).

The workshop is sponsored by the Centre National de la Recherche Scientifique (CNRS), Department of Science and Technology for Information and Communication and co-sponsored by the Institut National Polytechnique de Grenoble (INPG). The workshop is hosted and organized by the Laboratroire d’Automatique de Grenoble (CNRS/INPG/UJF).


Tutorials :

Robust modal control: A technique for designing restricted complexity controllers, C. Chiappa, C. Döll, J.F. Magni, and S. Chable

Direct controller reduction by identification in closed loop, I. D. Landau
Iterative tuning of restricted-complexity controllers – A perspective, A. Karimi
Ten years of progress in identification for control, M. Gevers

Benchmark Session 1 :

Design and optimization of restricted complexity controllers benchmark, I.D. Landau, A. Karimi, L. Miskovic, and H. Prochazka

A trust-region interior point approach to fixed-order control applied to the benchmark system, C.W.J. Hol, C.W. Scherer, E.G. Van der Meché, O.H. Bosgra

A linear matrix inequality approach to Hinf controller order reduction with stability and performance preservation, R. Amirifar, N. Sadati

Reduced complexity control of an active suspension system using Hinf loop shaping and pole region constraints, H. Faraz, H. Werner

Design of reduced order controllers via Hinf and parametric optimization: comparison for an active suspension system, D.U. Campos-Delgado, R. Fermat, E. Ruiz-Vélazquez

Benchmark Session 2 :

Designing a low order controller for an active suspension systems thanks robust control, genetic algorithms and gradient search, F. Le Mauff, G. Duc

Using a multi-model to reduce controller complexity in predicitve control, J.A. Rossiter

A restricted-complexity controller with Crone control-system design and closed-loop tuning, P. Lanusse, T. Poinot, O.Cois, A. Oustaloup, J.C. Trigeassou

Comments on the benchmark for “design and optimization of restricted complexity controllers”: towards a non-parametric model based solution, D. Alazard

Benchmark Session 3 :

Tunning of the controller for a benchmark active suspension system through VRFT, M.C. Campi, A. Lecchini, S.M. Savaresi

Low-order controller design using multi-objective optimization, Y. Cao, W. Yan

Correlation-based tuning of a restricted-complexity controller for an active suspension system, L. Miskovic, A. Karimi, and D. Bonvin

Benchmark Session 4 :

“Design and optimizationS. Chable, S. Mahieu of restricted complexity controllers”: A modal approach for reduced-order controllers, S. Chable, S. Mahieu, C. Chiappa

Direct controller order reduction by identification in closed loop applied to a benchmark problem, A. Constantinescu, I.D. Landau

Benchmark results and comparisons, A. Karimi, L. Miskovic, H. Prochazka