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Electrohydraulic pilot process |
Electrohydraulics is a field in full growth. It concerns systems to control force, position and speed variables that require precision and responsiveness, as in aeronautics, as well as systems involving large stresses such as those designed for civil engineering equipment. Hydraulyca’s recent beginning should facilitate the often lengthy and costly development of such systems by companies that do not always have adapted means. The center stems from the collaboration between project Congé at INRIA and the System Analysis and Control team of the Nancy Automatic Control Research Center (CRAN). Its goal is to foster interest in simulation and modern control methods, transfer from research to industry, assessment, consulting and seminar organization for industry. The center is equipped with electrohydraulic test benches, measurement systems and software for faster and more efficient development.
What does project Congé contribute to Hydraulyca? It explores a particular aspect of the models used. The research is directed at nonlinear models for simulation and linear models for control. However, none of these models are adapted to the computation and implementation of more efficient nonlinear control laws, since the former are precise but too complex from the mathematical viewpoint and the latter are too simple. This is why project Congé is designing nonlinear models of intermediate complexity that retain interesting mathematical properties, remain manageable and respect the essential physical characteristics of the system.
Such models and control laws still largely belong to the experimental realm, but point the way for innovative work that meet the specific needs of industrial partners. A contract has already been signed in the engmework of Hydraulyca between INRIA and the Hydro-Technic company. The contract concerns the modeling and control of the lab work bench Servolab marketed by the Hydro-Technic company. This study resulted in a software that made it possible to extend the pedagogical uses of the bench and therefore target new markets for this product.
Contacts :
Gauthier Sallet
Congé project,
INRIA Lorraine
Tél. : +33 3 87 54 72 80
Gauthier.Sallet@inria.fr
http://www.hydraulyca.org/
