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Recent research and development trend of blank holder force control technology for sheet metal forming

ZHANG Xiao-bin~1 SUN Yu~1 FAN Hong-mei~2 JIA Lu-ning~3 (1.School of Mechanical Engineering,Nanjing University of Science & Technology,Nanjing 210094;China 2.Nanjing Institute of Technology,Nanjing 211167,China; 3.Yangzhou JEMMRI Metalforming Machinery Co.,Ltd.,Yangzhou 225127,China)  
Firstly,the control modes were introduced from the aspect of loading mode and loading location.Secondly, the theoretical analysis of blank-holder force(BHF)was summarized.And finally,combining with artificial intelli- gence(AI)which was represented by artificial neural network(ANN)and modem control theory,the intelligent con- trol technology of BHF was analyzed.Based on the overview of the research status of blank holder-force(BHF)control technology,existing problems of blank holder-force(BHF)control technology were pointecl out,and at the same time,its development trend was discussed.
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