Document Type

Research Paper

Publication Date

Summer 6-21-2023


A paradigm for puzzle-based storage systems (PBS) is that all cells have the capacity of transporting loads horizontally and vertically. This research challenges this paradigm by considering unidimensional PBS, where some cells are limited to either horizontal or vertical movements. PBS with some unidimensional cells are referred to as unidimensional PBS. A linear program (LP) formulation is presented to find the optimal load retrieval path using a single-escort in a unidimensional PBS. The LP is solved recursively to understand the tradeoffs of unidimensional designs for a 4×4 system. It is concluded that unidimensional PBS can be designed such that the capital investment cost to throughput tradeoff is favorable.

Publication Title

Progress in Material Handling Research