Applied State Space Feedback Control of a Deep Drawing Process

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Abstract:

This paper presents results from application of discrete state spacebased feedback control of the blank holder force (BHF) magnitude and distribution in the drawing ofa rectangular workpiece. By means of monitoring the flange draw-in during the punch stroke, the controller makes continuousadjustments to the BHF magnitude and distribution by individuallycontrolling the pressure of a hydraulic fluid in a number of cavitiesembedded in the blank holder plate. The adjustments are conducted onlineduring the punch stroke to minimize the deviation of the achieved flange draw-in from a predetermined reference.

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Key Engineering Materials (Volumes 611-612)

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1023-1030

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May 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] EN 10130: 2009, EN 10130: 2009 Cold rolled low carbon steel flat products for cold forming Technical delivery conditions, European committee for standardization, (2009).

DOI: 10.3403/01635475

Google Scholar

[2] EN ISO 6892-1, EN ISO 6892-1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1: 2009), European committee for standardization, (2009).

DOI: 10.3139/120.110269

Google Scholar

[3] B. Endelt, K. B. Nielsen, and J. Danckert, New framework for on-line feedback control of a deepdrawing operation, Journal of Materials Processing Technology, 177 (2006), pp.426-429.

DOI: 10.1016/j.jmatprotec.2006.04.026

Google Scholar

[4] B. Endelt, S. Tommerup, and J. Danckert, A novel feedback control system - controlling the material flow in deep drawing using distributed blank-holder force, Journal of Materials Processing Technology, 213 (2013), pp.36-50.

DOI: 10.1016/j.jmatprotec.2012.08.003

Google Scholar

[5] S. Tommerup and B. Endelt, Experimental verification of a deep drawing tool system for adaptive blank holder pressure distribution, Journal of Materials Processing Technology, 212, Issue 11 (2012), pp.2529-2540.

DOI: 10.1016/j.jmatprotec.2012.06.015

Google Scholar

[6] L. Wang and T. C. Lee, Controlled strain path forming process with space variant blank holder force using rsm method, Journal of Materials Processing Technology, 167 (2005), pp.447-455.

DOI: 10.1016/j.jmatprotec.2005.06.017

Google Scholar