InImpact: The Journal of Innovation Impact |
| Publisher |
Future Technology Press |
| Vol. 7 No. 2 |
KES Transactions on SDM I - Sustainable Design and Manufacturing 2014 |
| Volume Editors |
KES International |
| Journal ISSN |
2051-6002 |
| |
| Article Title | Adaptive process control strategy for a two-step bending process |
| Primary Author | Franz Dallinger, ETH Zurich |
| Other Author(s) |
Jos Havinga; Emile Roux; Roberto d'Ippolito; Pavel Hora; Ton van den Boogaard
|
| Pages |
618 - 627
|
| Article ID |
sdm14-072 |
| Publication Date |
01-May-16 |
| Abstract | A robust production is an important goal in sheet metal forming in order to make the process outcome insensitive to variations in input and process conditions. This would guarantee a minimum number of defects and reduced press downtime. However, for complex parts it is difficult to achieve robust settings. Parts without defects can only be realized if the process parameters are adapted to the changed conditions.
In this paper, an approach for adaptive process control is presented, taking the uncertainties and tolerances of the process and material into consideration. The proposed control approach combines feedback and feed-forward control strategies. The most significant improvement is to incorporate feed-forward control with knowledge about the system (also known as predictive models). To create these models high fidelity numerical models have been created. Furthermore, a procedure is presented to update the coefficients of the predictive model to adapt it to the actual process state.
To evaluate the control strategy prior to its implementation, a testing environment has been developed. Different test scenarios for common states of the process have been generated to evaluate the improvement of the proposed control strategy. |
| | View Paper |
