Documents disponibles écrits par cet auteur

Convergence analysis of a steerable nip mechanism for full sheet control in printing devices / Ergueta, Edgar I. in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 132 N° 1 (Janvier/Fevrier 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 132 N° 1 (Janvier/Fevrier 2010) . - 09 p. Titre : Convergence analysis of a steerable nip mechanism for full sheet control in printing devices Type de document : texte imprimé Auteurs : Ergueta, Edgar I., Auteur ; Rene Sanchez, Auteur ; Roberto Horowitz, Auteur Année de publication : 2010 Article en page(s) : 09 p. Note générale : Systèmes dynamiques Langues : Anglais (eng) Mots-clés : Convergence  Linearisation  techniques  Printing  machinery  Process  control  State  feedback  Steering  systems Index. décimale : 629.8 Résumé : Current approaches for high speed color printers require sheets be accurately positioned as they arrive to the image transfer station (ITS). This goal has been achieved by designing and building a steerable nip mechanism, which is located upstream from the ITS. This mechanism consists of two rollers that not only rotate to advance the paper along the track, but also steer the paper in the yaw direction. This paper briefly reviews the design and experimental setup of the system, and focuses on the design and analysis of a controller that precisely corrects the lateral, longitudinal, and angular positions of the sheet. The control strategy used is based on linearization by state feedback with the addition of internal loops for the local control of the actuators. This paper also provides a methodology to tune the controller parameters so that the desired performance specifications are met. The success of this mechatronic approach is corroborated through simulation and experimental results, which show that the system is able to correct sheet errors and meet all the performance specifications. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013200 [...] [article] Convergence analysis of a steerable nip mechanism for full sheet control in printing devices [texte imprimé] / Ergueta, Edgar I., Auteur ; Rene Sanchez, Auteur ; Roberto Horowitz, Auteur . - 2010 . - 09 p. Systèmes dynamiques Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 132 N° 1 (Janvier/Fevrier 2010) . - 09 p. Mots-clés : Convergence  Linearisation  techniques  Printing  machinery  Process  control  State  feedback  Steering  systems Index. décimale : 629.8 Résumé : Current approaches for high speed color printers require sheets be accurately positioned as they arrive to the image transfer station (ITS). This goal has been achieved by designing and building a steerable nip mechanism, which is located upstream from the ITS. This mechanism consists of two rollers that not only rotate to advance the paper along the track, but also steer the paper in the yaw direction. This paper briefly reviews the design and experimental setup of the system, and focuses on the design and analysis of a controller that precisely corrects the lateral, longitudinal, and angular positions of the sheet. The control strategy used is based on linearization by state feedback with the addition of internal loops for the local control of the actuators. This paper also provides a methodology to tune the controller parameters so that the desired performance specifications are met. The success of this mechatronic approach is corroborated through simulation and experimental results, which show that the system is able to correct sheet errors and meet all the performance specifications. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013200 [...]

A robust approach to dynamic feedback linearization for a steerable nips mechanism / Ergueta, Edgar I. in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 133 N° 2 (Mars 2011) 

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 133 N° 2 (Mars 2011) . - 10 p. Titre : A robust approach to dynamic feedback linearization for a steerable nips mechanism Type de document : texte imprimé Auteurs : Ergueta, Edgar I., Auteur ; Seifried, Robert, Auteur ; Roberto Horowitz, Auteur Année de publication : 2011 Article en page(s) : 10 p. Note générale : Systèmes dynamiques Langues : Anglais (eng) Mots-clés : Actuators  Feedback  Kinematics  Linearisation  techniques  Position  control  Printing  Robust  control Index. décimale : 629.8 Résumé : This paper presents two different control strategies for paper position control in printing devices. The first strategy is based on standard feedback linearization plus dynamic extension (dynamic feedback linearization). Even though this controller is very simple to design, we show that it is not able to handle actuator multiplicative uncertainties, and therefore, it fails when it is implemented on the experimental setup. The second strategy we present uses similar concepts, but it is more robust since feedback linearization is used only to linearize the kinematics of the system and internal loops are used to locally control the actuator's positions and velocities. In this paper, not only do we formally prove the robustness of the second control strategy but we also show its successful implementation. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013300 [...] [article] A robust approach to dynamic feedback linearization for a steerable nips mechanism [texte imprimé] / Ergueta, Edgar I., Auteur ; Seifried, Robert, Auteur ; Roberto Horowitz, Auteur . - 2011 . - 10 p. Systèmes dynamiques Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 133 N° 2 (Mars 2011) . - 10 p. Mots-clés : Actuators  Feedback  Kinematics  Linearisation  techniques  Position  control  Printing  Robust  control Index. décimale : 629.8 Résumé : This paper presents two different control strategies for paper position control in printing devices. The first strategy is based on standard feedback linearization plus dynamic extension (dynamic feedback linearization). Even though this controller is very simple to design, we show that it is not able to handle actuator multiplicative uncertainties, and therefore, it fails when it is implemented on the experimental setup. The second strategy we present uses similar concepts, but it is more robust since feedback linearization is used only to linearize the kinematics of the system and internal loops are used to locally control the actuator's positions and velocities. In this paper, not only do we formally prove the robustness of the second control strategy but we also show its successful implementation. DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013300 [...]