Article ID: | iaor201112786 |
Volume: | 58 |
Issue: | 8 |
Start Page Number: | 782 |
End Page Number: | 794 |
Publication Date: | Dec 2011 |
Journal: | Naval Research Logistics (NRL) |
Authors: | Yuan Yuan, Zhou Shiyu, Chen Nan |
Keywords: | statistics: inference, queues: applications, heuristics, simulation: applications, quality & reliability |
This study investigates the statistical process control application for monitoring queue length data in M/G/1 systems. Specifically, we studied the average run length (ARL) characteristics of two different control charts for detecting changes in system utilization. First, the nL chart monitors the sums of successive queue length samples by subgrouping individual observations with sample size n. Next is the individual chart with a warning zone whose control scheme is specified by two pairs of parameters, (upper control limit, d