Improved part quality in stamping using Multi-Input Multi-Output (MIMO) process control

The binder force in sheet metal forming controls the material flow into the die cavity, and maintaining precise material flow characteristics is crucial for producing a high-quality stamped part. Process control can be used to adjust the binder force based on tracking a reference punch force traject...

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Bibliographic Details
Main Authors: Yongseob Lim, Venugopal, R., Ulsoy, A.G.
Format: Conference Proceeding
Language:English
Subjects:
Fuel economy
Inorganic materials
Manufacturing
MIMO
Presses
Process control
Process design
Production
Shape control
Sheet materials
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Summary:The binder force in sheet metal forming controls the material flow into the die cavity, and maintaining precise material flow characteristics is crucial for producing a high-quality stamped part. Process control can be used to adjust the binder force based on tracking a reference punch force trajectory to improve part quality and consistency. The purpose of this paper is to present a systematic approach to the design and implementation of a suitable MIMO process controller. The approach includes modeling of the sheet metal forming process, and the design of the process controller based on simulation. Experimental results from a complex-geometry part show that the MIMO process controller, designed through simulation, is effective.
ISSN:0743-1619
2378-5861
DOI:10.1109/ACC.2009.5159838