On the governing equation for web tension with out-of-round rolls
View/ Open
Date
2013-06Author
Branca, Carlo
Pagilla, Prabhakar R.
Reid, Karl N.
Metadata
Show full item recordAbstract
In roll-to-roll (R2R) manufacturing the presence of non-ideal elements, such as out-of-round or eccentric rolls, induces periodical oscillations in the web tension signal. Model simulations based on ideal elements do not exhibit these tension oscillations but can only follow the measured tension signal in an average sense. In order for the models to predict these measured tension oscillations due to non-ideal elements, the derivation of governing equations must consider a mechanism to include the correct behavior of the non-ideal transport elements. Continuing with our previous work on this topic presented at previous IWEBs, we present additional results that provide improvements to the web span tension governing equation which can better predict measured tension signals. In particular, this work is useful for tension control in the unwind section of the web line when the unwind material roll is often out-of-round.
Citation
Branca, C., Pagilla, P. R., & Reid, K. N. (2013, June). On the governing equation for web tension with out-of-round rolls. Paper presented at the Twelfth International Conference on Web Handling (IWEB), Stillwater, OK.