Erratum to: Control Theory and Technology https://doi.org/10.1007/s11768-023-00135-0

In the published article Figs. 1 and 2 should be shown as follows.

Fig. 1
figure 1

Top view of the i-th floor of the manufacturing process (horizontal material handling)

Fig. 2
figure 2

Side view of the i-th floor of the manufacturing process (vertical material handling)