Simulation in the design of unit carrier materials handling systems

摘要

Unit carriers are used in satisfying many current materials handling needs. A system using this kind of car-on-track hardware can be extensive and complex. This paper discusses the values and benefits of simulation as applied to the design of such a track system. The design of the automatic baggage handling system for the Seattle-Tacoma International Airport is used as an example of such a unit carrier system. Design requirements include input rates of baggage loading stations and car destination patterns over a relatively fixed system geometry. A simulation model is used to evaluate overall performance including empty car availability and minimized network flow. Design of the trackage controls as well as tuning of the entire baggage handling system are aided by use of the model. The results show that simulation is a highly-cost-effective tool for this problem.