Simulation methodology about systems design

Mental building about knowledge are governed by simulation methodologies. New machine design don't miss the rule. We propose in this paper to present the methodology used to design new physical or automatic machines. We expose how to build a model according to methodological concept to optimise and control in advance the structure and characteristics of a new machine. Our tools are mainly based on object oriented concept and discrete event methodology. Our work is based on an association between a structure component and the behaviour associated to this component. Hence it becomes easier to build or to study new machine design. Thanks to this methodology and to our hierarchies, we build a net of structure components which can be associated more or less easily to a behaviour. Then, the designed system proposes to the engineers the best results to actually build the system.