Modeling of Robustness Margins of the Control of a Predictive Control-Supervisory Architecture

Achraf Jabeur Telmoudi (SEPE, Ecole Supérieure des Sciences et Techniques de Tunis, Tunisia)

Lotfi Nabli (Monastir, Tunisia)

Radhi M'hiri (RME, Institut National des Sciences Appliquées et de Technologie, Tunisia)

Abstract: In this article a new Control-Supervisory architecture of Flexible Manufacturing Systems (FMS) is presented. We are interested particularly in construction and modelling of FMS robust control of flow-shop type to time constraints. Other than the control of production system, the goal is to observe and interpreted the robustness of resources and of manufacturing system. The P-time Petri Nets which is used for modeling of the time constraints. A methodology of construction of a robust control system generating the margins of passive and active robustness is elaborated. The redundancy of the robustness of the elementary parameters between passive and active leads us to define the ways ensuring the total robus tness of the system. To do so, a set of definitions lemmas and theorems are developed and affirmed by examples of applications.

Keywords: FMS, P-time Petri Nets, control-supervisory architecture, modeling, robustness, time constraints

Categories: D.2.2, G.4, I.2.3, I.6.5, J.6