No abstract

International audienc

International audienc

To cite this version:Carlos Indriago, Olivier Cardin, Naly Rakoto, Edgar Chacon, Pierre Castagna. Application of holonic paradigm to hybrid processes : case of a water treatment process. AbstractThe holonic paradigm has been widely studied in the context of manufacturing. These productions are discrete type because operations included do not involve continuous evolution variables. A different system class is studied here-hybrid system, which includes systems with piecewise continuous evolution and whose changes are related to the evolution of discrete variables. In this case, a reconfiguration of the system is usually necessary, and holonic paradigm is an appropriate response to the need for flexibility arising. This paper proposes an adaptation of holonic reference architecture on a hybrid system case. The proposed model is composed of the union of the hybrid model and the holonic model, where the proposed controller is represented by the product holon and the order holon, the interface is represented by the logical part of the resource holon, and finally the production system is represented by the physical part of the resource holon. A case study based on a water treatment process is investigated to demonstrate the applicability of PROSA based concepts to a hybrid system.

No abstract

A gas pipeline is a relatively simple physical system, but the optimality of the control is difficult to achieve. When switching from one kind of gas to another, a volume of useless mixture is generated. Therefore, the control needs to both respond to the demand and minimize the volume of lost gas. In case of stable and perfectly known demand, scheduling techniques can be used, but in other cases, calculation times are incompatible with an industrial application. This article introduces the application of H²CM (Holonic Hybrid Control Model) generic architecture on this specific case. The study case is extensively presented. Then, the defined holonic architecture (H²CM compatible) is detailed, and the role and functions of each holon are presented. Finally, a tentative general control algorithm is suggested, which gives an insight on the actual algorithms that will be developed in perspective of this work.