id: 02134587
dt: j
an: 02134587
au: Dotoli, M.; Fanti, M.P.
ti: Coloured timed Petri net model for real-time control of automated guided
    vehicle systems.
so: Int. J. Prod. Res. 42, No. 9, 1787-1814 (2004).
py: 2004
pu: Taylor \& Francis, London
la: EN
cc: 
ut: 
ci: 
li: doi:10.1080/00207540410001661364
ab: Summary: Automated guided vehicle systems (AGVS) are material-handling
    devices representing an efficient and flexible option for products
    management in automated manufacturing systems. In AGVS, vehicles follow
    a guide-path while controlled by a computer that assigns the route,
    tasks, velocity, etc. Moreover, the design of AGVS has to take into
    account some management problems such as collisions and deadlocks. The
    paper presents a novel control strategy to avoid deadlock and
    collisions in zone-controlled AGVS. In particular, the control scheme
    manages the assignments of new paths to vehicles and their acquisition
    of the next zone. Moreover, the use of coloured Petri nets is proposed
    to model the dynamics of AGVS and implement the control strategy
    stemming from the knowledge of the system state. Additionally,
    extending the coloured Petri net model with a time concept allows
    investigation of system performance. Several simulations of an AGVS
    with varying fleet size while measuring appropriate performance indices
    show the effectiveness of the proposed control strategy compared with
    an alternative policy previously presented.
rv: