TRINIDAD and TOBAGO

Abstract: This paper presents a design approach intended for the modeling and synthesis of discrete-event modules of hybrid controllers by combining a model of computation and a soft computing synthesis approach. The model of computation is based on coloured Petri nets (CPNs) and the soft computing method uses fuzzy logic. The design approach converts Petri net models into their equivalent fuzzy sets for rapid prototyping on embedded controllers or programmable Logic devices. The Petri net model of a discrete-event controller is captured and modeled using DesignCPN software tool whose latest version is called CPNTool. Design/CPN (CPNTool) uses colored Petri nets (CPNs) in model representation. Fuzzy sets generated in the conversion process are compatible inputs (fuzzy sets) to the Xfuzzy software, which is a fuzzy logic software for the design of fuzzy controllers. Xfuzzy can generate equivalent C and VHDL codes from fuzzy sets. Key–Words: Model of computation, coloured Petri nets, soft computing, fuzzy sets, and discrete-event controller.