Optimization of the picking sequence of an automated storage and retrieval system (AS/RS)

In this paper we consider the problem of an optimal picking order sequence in a multi-aisle warehouse that is operated by a single automatic storage and retrieval system (AS/RS). The problem is solved by using a genetic algorithm (GA) similar to the one in the earlier research [3]. The problem and the solution approach are implemented in the OpenOpal software which provides a suitable test bed for simulation and optimization (see http://www.openopal.org/). As a result it becomes evident that the genetic algorithm can be improved by changing the selection method and introducing an elitism mechanism.