KNOWLEDGE-BASED CONTROL OF DEDS

摘要

An alternative approach to the discrete-event dynamic systems (DEDS) control is presented. Petri nets are used to express analytically the DEDS model and to represent knowledge about the control task specifications. Both the DEDS model and the knowledge base are simultaneously used in the procedure of the control system synthesis. The elementary control possibilities are generated (by means of the DEDS model) in any step of the procedure and tested with respect to the existence conditions. When there are several possibilities satisfying the conditions the most suitable control possibility is chosen by means of the knowledge base. The proposed approach is illustrated on a simple flexible manufacturing system.