Author： Dotoli Mariagrazia Fanti Maria Pia
Publisher： Taylor & Francis Ltd
ISSN： 1362-3052
Source： International Journal of Computer Integrated Manufacturing, Vol.18, Iss.2-3, 2005-03, pp. : 122-136
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Abstract
An Automated Storage and Retrieval System (AS/RS) automatically stores incoming material and retrieves stored parts with no direct human handling. This paper proposes a modular and unified modelling framework for heterogeneous automated storage and retrieval systems, comprising rail guided vehicles and narrow aisle cranes. We employ coloured timed Petri nets, representing a concise and computationally efficient tool for modelling the system dynamic behaviour, particularly suitable for real-time control implementation. Indeed, the model can be utilized in a discrete event simulation to apply control policies in order to solve scheduling problems, as well as to avoid deadlock and collision occurrences.
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