Practical experience with control of drives of an accumulator in a web processing continuous line

The paper contributes to a study of web a vertical type accumulator in a continuous line. It is focused on control of parallel drives driving the looper car and is pointing out key problems the engineer meet at tuning controllers of the accumulator drives. Although the control structure is well known, practical hints to estimate empirically some parameters of the systems are presented. The accumulator mechanics was modelled and simulated results are presented. They are compared with the results obtained by measurement on the real accumulator system. The results obtained by both methods show a good agreement that confirm correctness of the simulation model.