Elaboration of distributed optimal controller for manufacturing systems through synthesis approach

This paper deals with a distributed approach to obtain an optimal controller for manufacturing systems. It bases on a synthesis algorithm and a modular modeling of the plant to avoid combinatory explosion found in centralized structure. Firstly, from the local Plant Elements, local constraints are defined to build local supervisors. Local constraints restrict the system behavior within a desired specification. Secondly, global constraints are user to establish distributed supervisors. The resulting automata are translated in a normalized language for implementation in a Programmable Logic Controller. The approach is illustrated using a benchmark.