Throughput optimization of automated flats sorting machines

A.N. Tarau, B. De Schutter, and J. Hellendoorn, "Throughput optimization of automated flats sorting machines," Proceedings of the 17th IFAC World Congress, Seoul, Korea, pp. 51-56, July 2008.

Large letters, journals, magazines, plastic wrapped mail items of A4 size are called flats. In order to be able to handle the large volumes of flats that have to be processed state-of-the-art post sorting centers are equipped with dedicated flats sorting machines. The throughput of a flats sorting machine is crucial when dealing with a continually increasing number of items to be sorted in a certain time. But, the throughput is limited by the mechanical constraints. We propose to optimize the efficiency of this sorting system by making several design changes and implementing advanced model-based control methods such as optimal control and model predictive control. In this paper we determine an event-based model of the flats sorting system. The considered control methods are compared for several scenarios. Results indicate that using the proposed approaches the throughput can be increased with up to 52.62%, the computation of the optimal velocity being performed in real-time.

 * Online version of the paper
 * Corresponding technical report: pdf file (161 KB)
      Note: More information on the pdf file format mentioned above can be found here.

Bibtex entry:

        author={A.N. Tar{\u{a}}u and B. {D}e Schutter and J. Hellendoorn},
        title={Throughput optimization of automated flats sorting machines},
        booktitle={Proceedings of the 17th IFAC World Congress},
        address={Seoul, Korea},

Go to the publications overview page.

This page is maintained by Bart De Schutter. Last update: March 20, 2022.