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Array manufacturing system of TFT-LCD is charactered by huge amount of investment, numerous equipment, complicated layout and high degree of uncertainty, and it’s one of the most complex manufacturing systems.As fully automated, AMHS(Automated Material Handling System) affect the performance of Array manufacturing system, so it is important to study vehicle scheduling which is the core issue of AMHS according to theoretical and practical value. From this point of view, this thesis focused on vehicle scheduling in Array manufacturing system of the fifth-generation TFT-LCD.First of all, simulation platform of Array production system has established and implemented in eM-Plant.The simulation platform is compared with physical layer, scheduling layer and data layer.The physical layer is the model of machine, studio spaces, transportation vehicles and so on.The scheduling layer consists of a series of strategies,including release rule,part delivery rule,vehicle dispacthing rule and so on.The data layer take charge of communication between above two layers and information exchange of different entities in the physical layer. Simulation platform not only realized the modeling of Array production systems, but also is a good tool to optimize production line and scheduling strategies.Secondly,According to characters of TFT-LCD,with the minimization of average waiting time and transport time as the objective, a mathematical model Array-Interbay was established,and a DRWTT (Dispatching Rule for Waiting and Transport time)algorithm was proposed to solve the problem. Simulation example showed performances of the advanced algorithm, such as average waiting time, 3σhandling time and transport time, is superior to FEFS(First Encountered Fist Serve) and LWT(Longest Waiting Time) strategies which was widely used in existing production lines handling system.Finally, Crane is widely used in Intrabay of Array. A BPO (Bottleneck Process Oriented) vehicle scheduling algorithm is proposed based on composition of Array-Intrabay and its control system, realization of the algorithm and simulation results is given by the simulation platform .Simulation example showed performances of the BPO algorithm,such as vehicle efficiency and uniformity of WIP ,is superior to FPS(Fixed Position Sever)and LWT,so the algorithm can achieved balanced production.
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