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Multi-input multi-output (MIMO) modeling and control for stamping / Yongseob Lim in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 132 N° 4 (Juillet 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 132 N° 4 (Juillet 2010) . - 12 p. Titre : Multi-input multi-output (MIMO) modeling and control for stamping Type de document : texte imprimé Auteurs : Yongseob Lim, Auteur ; Ravinder Venugopal, Auteur Année de publication : 2010 Article en page(s) : 12 p. Note générale : Systèmes dynamique Langues : Anglais (eng) Mots-clés : Control  system  synthesis  Die  casting  Force  control  Metal  stamping  MIMO  systems  Parameter  estimation  Process  control  Sheet  metal  processing Index. décimale : 629.8 Résumé : The binder force in sheet metal forming controls the material flow into the die cavity. 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 of 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 multi-input multi-output (MIMO) process controller. An appropriate process model structure for the purpose of controller design for the sheet metal forming process is presented and the parameter estimation for this model is accomplished using system identification methods. This paper is based on original experiments performed with a new variable blank holder force (or variable binder force) system that includes 12 hydraulic actuators to control the binder force. Experimental results from a complex-geometry part show that the MIMO process controller designed through simulation is effective. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013 [...] [article] Multi-input multi-output (MIMO) modeling and control for stamping [texte imprimé] / Yongseob Lim, Auteur ; Ravinder Venugopal, Auteur . - 2010 . - 12 p. Systèmes dynamique Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 132 N° 4 (Juillet 2010) . - 12 p. Mots-clés : Control  system  synthesis  Die  casting  Force  control  Metal  stamping  MIMO  systems  Parameter  estimation  Process  control  Sheet  metal  processing Index. décimale : 629.8 Résumé : The binder force in sheet metal forming controls the material flow into the die cavity. 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 of 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 multi-input multi-output (MIMO) process controller. An appropriate process model structure for the purpose of controller design for the sheet metal forming process is presented and the parameter estimation for this model is accomplished using system identification methods. This paper is based on original experiments performed with a new variable blank holder force (or variable binder force) system that includes 12 hydraulic actuators to control the binder force. Experimental results from a complex-geometry part show that the MIMO process controller designed through simulation is effective. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013 [...]