Design Methodology of Reconfigurable Logic Controller for Manufacturing System

Abstract:

Manufacturing system supporting dynamic reconfiguration is able to form new production capacity and functions through component update and adjustment. For these new features, mix production and quick reconfiguration of manufacturing system, its logic controller should also adapt to the requirements. The logic controller design methodology of manufacturing system based on reconfigurable petri nets (RPN) is presented. First, according to manufacturing controlling needs, the formal model of logic controller is built up; then, the net rewriting rules are constructed according to system reconfiguration modes; finally, the logic controller dynamically reconfigure to meet the new production requirements according to rewriting rules. The changes of manufacturing system can reconfigure quickly, automatically and generate the new system logic controller, moreover the behavior of new controller characteristics are decidable. A real case is also presented to verify the efficiency and effectivity of the methodology.