Beitrag zur Dimensionierung von automatischen Sortiersystemen (Sorter)

Abstract

Fully automated sortation systems (sorter) gain increasing relevance for the intra logistic sector. Sorter achieve a constant high sortation performance accompanied by low sortation error rate, and on that score often they are the backbone of complex distribution systems. A sorter system consits of inductions, transport conveyor, and destinations. The following article focuses on a sorter model with a closed loop transport conveyor and with single tray allocation on it. The transport conveyor has a fixed transport capacity. These conveyors are mostly realised in tilt tray or belt tray technology. The theoretical sorting performance, calculated by transport speed and tray distance, can merely achieved in industrial application. A set of factors cause a loss of performance. The following article presents a method to calculate the average waiting queue at inductions and the loss of performance by circulating goods on transport conveyor. The calculation is based on simulation experiments and polynomical approximation. This paper is based on a research project which was funded by the Federal Ministry of Economics and Technology via the Arbeitsgemeinschaft industrieller Forschungsvereinigungen "Otto von Guericke" (AiF) and carried out on behalf of the Bundesvereinigung Logistik e.V. (BVL).