G. Garani∗ and G.K. Adam∗
Discrete-event simulation, qualitative simulation, qualitative meth- ods
The research in this paper deals with the simulation of discrete- event machine systems, or of continuous machine systems that can be described in a discrete manner, using qualitative simulation techniques. In order to represent discrete-time descriptions of machine systems and processes in the most efficient way, the authors used a combination of both advanced qualitative modelling techniques and numerical methods. Experiments carried out on industrial machines and processes, using an extended qualitative modelling and simulation toolbox, provided performance metrics and insight into the design and real-time control of industrial machines and processes. The results obtained proved that this extended qualitative modelling approach provided less complex computational models for describing and simulating discrete-event machine systems, and that these models can be applied in cases where traditional mathematical models cannot.
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