การควบคุมการปฏิบัติงานของพาหนะขนส่งวัสดุแบบอัตโนมัติที่สามารถรับภาระได้ 2 หน่วย ในระบบผลิตแบบยืดหยุ่น / รจนาฎ ไกรปัญญาพงศ์ = Operational control of double-load automated guided vehicles in a flexible manufacturing system / Rotchanart Kripunyapong
This paper attempts to investigate the performance of a flexible manufacturing system that employs automated guided vehicles by computer simulation technique. The experiments are conducted under various factors, i.e., number of AGVs, dispatching rules, pick-up rules, drop-off rules, queue sizes and number of entities in the system against mean flow time, mean lateness, mean tardiness, mean jobs done, mean number of jobs in central buffer and average machine utilization. The simulation results indicate that all factors affect every performance measure apart from pick-up rules that have no effect on mean number of jobs in central buffer for 95% significance level. In addition, the interaction between the number of AGVs and the number of entities in the system is at a highest level comparing with others for all measures, except average machine utilization of which the interaction between the number of AGVs and the queue size is the most significant. The policy that shows good performance for all measures is FSNS/FCFS/ND.
