Vehicle-based storage and retrieval systems present an attractive choice for distribution center automation because it provides the flexibility in managing demand fluctuations without affecting transaction throughput times. In this research, we contend that while dual-command cycles can reduce the vehicle travel times for processing transactions, it may not be the best policy for reducing transaction throughput times when transactions arrive at random time instants. We develop stochastic models to test the transaction throughput time performance with multiple pairing strategies and present operational insights.
Progress in Material Handling Research: 2016
Roy, Debjit and Joshie, Harit, "Evaluating Transaction Pairing Strategies for Vehicle-based High-density Storage Systems" (2016). 14th IMHRC Proceedings (Karlsruhe, Germany – 2016). 26.