Application of CRONE control to a sampled time varying system with periodic coefficients / Sabatier, Jocelyn in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 130 n°6 (Novembre 2008)  

Public ISBD [article]  inTransactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 130 n°6 (Novembre 2008) . - 12 p. Titre : Application of CRONE control to a sampled time varying system with periodic coefficients Type de document : texte imprimé Auteurs : Sabatier, Jocelyn, Auteur ; Aitor Garcia Iturricha, Auteur ; Mathieu Moze, Auteur Année de publication : 2009 Article en page(s) : 12 p. Note générale : dynamic systems Langues : Anglais (eng) Mots-clés : CRONE robust control  discrete-time-varying systems  z-transforms  pseudofrequency responses Résumé : An application of CRONE robust control extended to discrete-time-varying systems with periodic coefficients is presented. The application is carried out in the frequency domain through the representation of considered systems using time varying z-transforms and time varying pseudofrequency responses. En ligne : http://dynamicsystems.asmedigitalcollection.asme.org/issue.aspx?journalid=117&is [...] [article] Application of CRONE control to a sampled time varying system with periodic coefficients [texte imprimé] / Sabatier, Jocelyn, Auteur ; Aitor Garcia Iturricha, Auteur ; Mathieu Moze, Auteur . - 2009 . - 12 p. dynamic systems Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 130 n°6 (Novembre 2008) . - 12 p. Mots-clés : CRONE robust control  discrete-time-varying systems  z-transforms  pseudofrequency responses Résumé : An application of CRONE robust control extended to discrete-time-varying systems with periodic coefficients is presented. The application is carried out in the frequency domain through the representation of considered systems using time varying z-transforms and time varying pseudofrequency responses. En ligne : http://dynamicsystems.asmedigitalcollection.asme.org/issue.aspx?journalid=117&is [...]

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Embedded fractional nonlinear supercapacitor model and its parametric estimation method / Bertrand, Nicolas in IEEE transactions on industrial electronics, Vol. 57 N° 12 (Décembre 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 12 (Décembre 2010) . - pp. 3991 - 4000 Titre : Embedded fractional nonlinear supercapacitor model and its parametric estimation method Type de document : texte imprimé Auteurs : Bertrand, Nicolas, Auteur ; Sabatier, Jocelyn, Auteur ; Briat, Olivier, Auteur Année de publication : 2011 Article en page(s) : pp. 3991 - 4000 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Electromechanical devices Identification Modeling Simulation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper deals with a supercapacitor (SC) onboard model and its online identification procedure for embedded applications. To take into account its nonlinear behavior, the strategy used in this paper consists, as the first step, in the application of the porous electrode theory to the SC and the approximation of the resulting model. A set of fractional linear systems which are represented by a differential equation involving fractional derivatives is then obtained. Each element of this set represents the behavior of the SC only around one operating voltage. A global nonlinear model is then deduced through an integration method. An online identification procedure has been developed for this nonlinear model. This time identification is based on the mean least square method. Its time behavior has been compared with that of an SC cell for a specific current profile with different levels. DEWEY : 621.38 ISSN : 0279-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5570987 [article] Embedded fractional nonlinear supercapacitor model and its parametric estimation method [texte imprimé] / Bertrand, Nicolas, Auteur ; Sabatier, Jocelyn, Auteur ; Briat, Olivier, Auteur . - 2011 . - pp. 3991 - 4000. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 12 (Décembre 2010) . - pp. 3991 - 4000 Mots-clés : Electromechanical devices Identification Modeling Simulation Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper deals with a supercapacitor (SC) onboard model and its online identification procedure for embedded applications. To take into account its nonlinear behavior, the strategy used in this paper consists, as the first step, in the application of the porous electrode theory to the SC and the approximation of the resulting model. A set of fractional linear systems which are represented by a differential equation involving fractional derivatives is then obtained. Each element of this set represents the behavior of the SC only around one operating voltage. A global nonlinear model is then deduced through an integration method. An online identification procedure has been developed for this nonlinear model. This time identification is based on the mean least square method. Its time behavior has been compared with that of an SC cell for a specific current profile with different levels. DEWEY : 621.38 ISSN : 0279-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5570987

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On lead-acid-battery resistance and cranking-capability estimation / Cugnet, Mikael in IEEE transactions on industrial electronics, Vol. 57 N° 3 (Mars 2010)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 57 N° 3 (Mars 2010) . - pp. 909 - 917 Titre : On lead-acid-battery resistance and cranking-capability estimation Type de document : texte imprimé Auteurs : Cugnet, Mikael, Auteur ; Sabatier, Jocelyn, Auteur ; Laruelle, Stéphane, Auteur Article en page(s) : pp. 909 - 917 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Battery resistance Cranking Fractional systems Lead-acid batteries System identification Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : With hybrid and electric vehicle developments, battery-monitoring systems have to meet the new requirements of the automobile industry. This paper deals with one of them, the battery's ability to start a vehicle, also called battery crankability, through battery-resistance estimation. A fractional-order model obtained by system identification is used to estimate the internal resistance of lead-acid batteries. Fractional-order modeling permits an accurate simulation of the battery electrical behavior with a low number of parameters. Moreover, the high-frequency gain of the fractional model is directly linked to the battery resistance. A resistance-estimation method based on a frequency-invalidation method is, thus, proposed. It is demonstrated that the battery's available power that defines battery crankability is correlated to the battery resistance. Thus, a battery-crankability estimator using the battery resistance is suggested. Validation tests are carried out with various batteries. This estimator cannot be embedded in a microcontroller due to the linear-matrix-inequality-based optimization algorithm in the invalidation-model method used. A simplified algorithm is finally proposed, and its efficiency is proved. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340638 [article] On lead-acid-battery resistance and cranking-capability estimation [texte imprimé] / Cugnet, Mikael, Auteur ; Sabatier, Jocelyn, Auteur ; Laruelle, Stéphane, Auteur . - pp. 909 - 917. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 3 (Mars 2010) . - pp. 909 - 917 Mots-clés : Battery resistance Cranking Fractional systems Lead-acid batteries System identification Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : With hybrid and electric vehicle developments, battery-monitoring systems have to meet the new requirements of the automobile industry. This paper deals with one of them, the battery's ability to start a vehicle, also called battery crankability, through battery-resistance estimation. A fractional-order model obtained by system identification is used to estimate the internal resistance of lead-acid batteries. Fractional-order modeling permits an accurate simulation of the battery electrical behavior with a low number of parameters. Moreover, the high-frequency gain of the fractional model is directly linked to the battery resistance. A resistance-estimation method based on a frequency-invalidation method is, thus, proposed. It is demonstrated that the battery's available power that defines battery crankability is correlated to the battery resistance. Thus, a battery-crankability estimator using the battery resistance is suggested. Validation tests are carried out with various batteries. This estimator cannot be embedded in a microcontroller due to the linear-matrix-inequality-based optimization algorithm in the invalidation-model method used. A simplified algorithm is finally proposed, and its efficiency is proved. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5340638

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