Sliding Mode Force Control during Drawing Processes in Presses
| Authors: | Landaluze Joseba, IKERLAN, Spain
Goikoetxea Josu, IKERLAN, Spain
Pujana Aron, IKERLAN, Spain
Nicolas Carlos F., IKERLAN, Spain
Martinez Ana, IKERLAN, Spain |
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| Topic: | 6.2 Mining, Mineral & Metal Processing |
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| Session: | Rolling Mills II |
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| Keywords: | Sliding-mode control, force control, feedforward, robust control, PID. |
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Abstract
Nowadays high-tonnage drawing presses need a controlled cushion so that the force is controlled during the drawing process. Although with a classic force control algorithm, consisting of a non-linear feedforward loop and a closed loop PID control, the results are normally quite good, there are times when tuning up is difficult and performance diminishes significantly at high rates. A new force control has therefore been developed applying sliding mode techniques, which is more robust than the previous control, especially in problem cases.
