Documents disponibles écrits par cet auteur

A Coordinating control strategy for autothermal fuel reforming systems / Chen, Jian in IEEE Transactions on control systems technology, Vol. 18 N° 4 (Juillet 2010) 

Public ISBD [article]  in IEEE Transactions on control systems technology > Vol. 18 N° 4 (Juillet 2010) . - pp. 779-788 Titre : A Coordinating control strategy for autothermal fuel reforming systems Type de document : texte imprimé Auteurs : Chen, Jian, Auteur ; Jing Sun, Auteur Année de publication : 2011 Article en page(s) : pp. 779-788 Note générale : Génie Aérospatial Langues : Anglais (eng) Mots-clés : Autothermal  reforming  Coordinating  control  Dynamic  modeling  Fuel  cells  Fuel  reforming  technologies  Nonlinear  systems Index. décimale : 629.1 Résumé : In this paper, a control-oriented nonlinear model is developed for an autothermal reformer-based fuel process system. By trajectory planning for one of the system states, a coordinating control algorithm is proposed for the three input flow rates to track/regulate the temperature and hydrogen production of the autothermal reformer. Stability analysis is provided to show a local uniformly ultimately bounded tracking result. Simulation results illustrate the performance of the proposed control algorithm. DEWEY : 629.1 ISSN : 1063-6536 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5272392 [article] A Coordinating control strategy for autothermal fuel reforming systems [texte imprimé] / Chen, Jian, Auteur ; Jing Sun, Auteur . - 2011 . - pp. 779-788. Génie Aérospatial Langues : Anglais (eng) in IEEE Transactions on control systems technology > Vol. 18 N° 4 (Juillet 2010) . - pp. 779-788 Mots-clés : Autothermal  reforming  Coordinating  control  Dynamic  modeling  Fuel  cells  Fuel  reforming  technologies  Nonlinear  systems Index. décimale : 629.1 Résumé : In this paper, a control-oriented nonlinear model is developed for an autothermal reformer-based fuel process system. By trajectory planning for one of the system states, a coordinating control algorithm is proposed for the three input flow rates to track/regulate the temperature and hydrogen production of the autothermal reformer. Stability analysis is provided to show a local uniformly ultimately bounded tracking result. Simulation results illustrate the performance of the proposed control algorithm. DEWEY : 629.1 ISSN : 1063-6536 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5272392

Influence of phase-shift and overlap ratio on savonius wind turbine's performance / Chen, Jian in Transactions of the ASME. Journal of solar energy engineering, Vol. 133 N° 1 (Fevrier 2011) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 1 (Fevrier 2011) . - 09 p. Titre : Influence of phase-shift and overlap ratio on savonius wind turbine's performance Type de document : texte imprimé Auteurs : Chen, Jian, Auteur ; Jan Kumbernuss, Auteur ; Zhang Linhua, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : Solar energy Langues : Anglais (eng) Mots-clés : Rotors  Wind  turbines Index. décimale : 621.47 Résumé : This paper presents the experimental results of the vertical axis wind turbine (VAWT), especially the Savonius rotors, which are developed for application on top of buildings due to lower wind speed compared with remote areas. The VAWT is regarded as the most suitable elegant candidate to be integrated with buildings for its relatively low operating noise, easy maintenance, and easy access. This study explored the interaction effect of the overlap ratio, phase-shift, and stage on the performance of the Savonius rotors in details. The results show that appropriate choice of the phase-shift angle according to the overlap ratio can not only increase the power coefficient of the Savonius rotors but also eliminate the negative static torque and smooth the variation of the static torque coefficient. Moreover, the performance of the two-stage rotors indicates that the two-stage rotor is the best candidate for this type of wind turbines or as a starting assistant for the Darrieus rotors. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...] [article] Influence of phase-shift and overlap ratio on savonius wind turbine's performance [texte imprimé] / Chen, Jian, Auteur ; Jan Kumbernuss, Auteur ; Zhang Linhua, Auteur . - 2012 . - 09 p. Solar energy Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 133 N° 1 (Fevrier 2011) . - 09 p. Mots-clés : Rotors  Wind  turbines Index. décimale : 621.47 Résumé : This paper presents the experimental results of the vertical axis wind turbine (VAWT), especially the Savonius rotors, which are developed for application on top of buildings due to lower wind speed compared with remote areas. The VAWT is regarded as the most suitable elegant candidate to be integrated with buildings for its relatively low operating noise, easy maintenance, and easy access. This study explored the interaction effect of the overlap ratio, phase-shift, and stage on the performance of the Savonius rotors in details. The results show that appropriate choice of the phase-shift angle according to the overlap ratio can not only increase the power coefficient of the Savonius rotors but also eliminate the negative static torque and smooth the variation of the static torque coefficient. Moreover, the performance of the two-stage rotors indicates that the two-stage rotor is the best candidate for this type of wind turbines or as a starting assistant for the Darrieus rotors. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...]

Influence of phase-shift and overlap ratio on savonius wind turbine's performance / Chen, Jian in Transactions of the ASME. Journal of solar energy engineering, Vol. 134 N° 1 (Janvier/Fevrier 2012) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 134 N° 1 (Janvier/Fevrier 2012) . - 9 p. Titre : Influence of phase-shift and overlap ratio on savonius wind turbine's performance Type de document : texte imprimé Auteurs : Chen, Jian, Auteur ; Jan Kumbernuss, Auteur Année de publication : 2012 Article en page(s) : 9 p. Note générale : Solar energy Langues : Anglais (eng) Mots-clés : Rotors,Wind  turbines Résumé : This paper presents the experimental results of the vertical axis wind turbine (VAWT), especially the Savonius rotors, which are developed for application on top of buildings due to lower wind speed compared with remote areas. The VAWT is regarded as the most suitable elegant candidate to be integrated with buildings for its relatively low operating noise, easy maintenance, and easy access. This study explored the interaction effect of the overlap ratio, phase-shift, and stage on the performance of the Savonius rotors in details. The results show that appropriate choice of the phase-shift angle according to the overlap ratio can not only increase the power coefficient of the Savonius rotors but also eliminate the negative static torque and smooth the variation of the static torque coefficient. Moreover, the performance of the two-stage rotors indicates that the two-stage rotor is the best candidate for this type of wind turbines or as a starting assistant for the Darrieus rotors. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...] [article] Influence of phase-shift and overlap ratio on savonius wind turbine's performance [texte imprimé] / Chen, Jian, Auteur ; Jan Kumbernuss, Auteur . - 2012 . - 9 p. Solar energy Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 134 N° 1 (Janvier/Fevrier 2012) . - 9 p. Mots-clés : Rotors,Wind  turbines Résumé : This paper presents the experimental results of the vertical axis wind turbine (VAWT), especially the Savonius rotors, which are developed for application on top of buildings due to lower wind speed compared with remote areas. The VAWT is regarded as the most suitable elegant candidate to be integrated with buildings for its relatively low operating noise, easy maintenance, and easy access. This study explored the interaction effect of the overlap ratio, phase-shift, and stage on the performance of the Savonius rotors in details. The results show that appropriate choice of the phase-shift angle according to the overlap ratio can not only increase the power coefficient of the Savonius rotors but also eliminate the negative static torque and smooth the variation of the static torque coefficient. Moreover, the performance of the two-stage rotors indicates that the two-stage rotor is the best candidate for this type of wind turbines or as a starting assistant for the Darrieus rotors. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000001 [...]

Modeling, experimentation, and simulation of an air-over-hydraulic brake system / Xicheng Xiong in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 131 N° 3 (Mai 2009) 

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 131 N° 3 (Mai 2009) . - 09 p. Titre : Modeling, experimentation, and simulation of an air-over-hydraulic brake system Type de document : texte imprimé Auteurs : Xicheng Xiong, Auteur ; Jianhua Wei, Auteur ; Chen, Jian, Auteur Année de publication : 2009 Article en page(s) : 09 p. Note générale : dynamic systems Langues : Anglais (eng) Mots-clés : air-over-hydraulic  brake  system;  analytical  dynamic  model Résumé : This paper deals with the development and validation of an analytical dynamic model of an air-over-hydraulic (AOH) brake system that is widely used on loaders. The AOH system is broken into five simple and cascaded subsystems, pneumatic circuit, air-hydraulic actuator, brake line, wheel cylinder, and disk brake. Pneumatic, hydraulic, and mechanical dynamics are taken care of in each subsystem. The determination of model coefficients is introduced in detail. Many experiments are performed on an experimental setup of the real AOH system on a loader and the experimental data are compared with the simulation results. Preliminary analysis shows that the simulation results are in good agreement with the experimental data. Other researchers in the areas of brake systems in construction machinery would find the model useful for similar system modeling and analysis DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://dynamicsystems.asmedigitalcollection.asme.org/issue.aspx?journalid=117&is [...] [article] Modeling, experimentation, and simulation of an air-over-hydraulic brake system [texte imprimé] / Xicheng Xiong, Auteur ; Jianhua Wei, Auteur ; Chen, Jian, Auteur . - 2009 . - 09 p. dynamic systems Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 131 N° 3 (Mai 2009) . - 09 p. Mots-clés : air-over-hydraulic  brake  system;  analytical  dynamic  model Résumé : This paper deals with the development and validation of an analytical dynamic model of an air-over-hydraulic (AOH) brake system that is widely used on loaders. The AOH system is broken into five simple and cascaded subsystems, pneumatic circuit, air-hydraulic actuator, brake line, wheel cylinder, and disk brake. Pneumatic, hydraulic, and mechanical dynamics are taken care of in each subsystem. The determination of model coefficients is introduced in detail. Many experiments are performed on an experimental setup of the real AOH system on a loader and the experimental data are compared with the simulation results. Preliminary analysis shows that the simulation results are in good agreement with the experimental data. Other researchers in the areas of brake systems in construction machinery would find the model useful for similar system modeling and analysis DEWEY : 629.8 ISSN : 0022-0434 En ligne : http://dynamicsystems.asmedigitalcollection.asme.org/issue.aspx?journalid=117&is [...]

A Novel PWM Technique in Digital Control / Li Peng in IEEE transactions on industrial electronics, Vol. 54 N°1 (Fevrier 2007) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 54 N°1 (Fevrier 2007) . - 338-346 p. Titre : A Novel PWM Technique in Digital Control Titre original : Une Technique du Roman PWM dans la Commande Numérique Type de document : texte imprimé Auteurs : Li Peng, Auteur ; Yong Kang, Auteur ; Xuejun Pei ; Chen, Jian, Auteur Article en page(s) : 338-346 p. Note générale : Génie Electrique Langues : Anglais (eng) Mots-clés : Digital  control  High  frequency  Pulse  width  modulation  (PWM)  technique  Resolution.Fréquence  de  commande  numérique  Technique  de  modulation  de  largeur  d'impulsion  Résolution. Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : One problem with microprocessor-based high-frequency pulsewidth-modulation (PWM) converters is the modulating resolution limitation caused by limited-time resolution of hardware timers. In this paper, a novel PWM technique, the double PWM (DPWM), is proposed. DPWM combines the advantages of low-frequency modulation and high-frequency switching in power conversion and resolves the contradiction between high frequency and accuracy in a digital control scheme. DPWM effectively increases the resolution in digital control, while the harmonics introduced by this method is found to be negligible. Theoretical analysis, characteristics, and design considerations are given, and they are verified by experiments on a 5.5-kW 20-kHz insulated-gate-bipolar-transistor boost-buck converter. Un problème avec les convertisseurs à haute fréquence sur microprocesseur de la modulation de largeur d'impulsion (PWM) est la limitation de modulation de résolution provoquée par résolution limitée de temps des temporisateurs de matériel. En cet article, on propose une technique du roman PWM, le double PWM (DPWM). DPWM combine les avantages de la modulation de basse fréquence et de la commutation à haute fréquence dans la conversion de puissance et résout la contradiction entre la fréquence et l'exactitude dans un arrangement de commande numérique. DPWM augmente efficacement la résolution dans la commande numérique, alors que les harmoniques présentés par cette méthode s'avère négligeables. L'analyse, les caractéristiques, et des considérations de conception sont données, et eux théoriques sont vérifiés par des expériences sur un convertisseur bipolaire de mâle de poussée de transistor de la porte 5.5-kW isolé par 20-kHz. DEWEY : 621 ISSN : 0278-0046 RAMEAU : Modulation En ligne : pe105@mail.hust.edu.cn [article] A Novel PWM Technique in Digital Control = Une Technique du Roman PWM dans la Commande Numérique [texte imprimé] / Li Peng, Auteur ; Yong Kang, Auteur ; Xuejun Pei ; Chen, Jian, Auteur . - 338-346 p. Génie Electrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 54 N°1 (Fevrier 2007) . - 338-346 p. Mots-clés : Digital  control  High  frequency  Pulse  width  modulation  (PWM)  technique  Resolution.Fréquence  de  commande  numérique  Technique  de  modulation  de  largeur  d'impulsion  Résolution. Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : One problem with microprocessor-based high-frequency pulsewidth-modulation (PWM) converters is the modulating resolution limitation caused by limited-time resolution of hardware timers. In this paper, a novel PWM technique, the double PWM (DPWM), is proposed. DPWM combines the advantages of low-frequency modulation and high-frequency switching in power conversion and resolves the contradiction between high frequency and accuracy in a digital control scheme. DPWM effectively increases the resolution in digital control, while the harmonics introduced by this method is found to be negligible. Theoretical analysis, characteristics, and design considerations are given, and they are verified by experiments on a 5.5-kW 20-kHz insulated-gate-bipolar-transistor boost-buck converter. Un problème avec les convertisseurs à haute fréquence sur microprocesseur de la modulation de largeur d'impulsion (PWM) est la limitation de modulation de résolution provoquée par résolution limitée de temps des temporisateurs de matériel. En cet article, on propose une technique du roman PWM, le double PWM (DPWM). DPWM combine les avantages de la modulation de basse fréquence et de la commutation à haute fréquence dans la conversion de puissance et résout la contradiction entre la fréquence et l'exactitude dans un arrangement de commande numérique. DPWM augmente efficacement la résolution dans la commande numérique, alors que les harmoniques présentés par cette méthode s'avère négligeables. L'analyse, les caractéristiques, et des considérations de conception sont données, et eux théoriques sont vérifiés par des expériences sur un convertisseur bipolaire de mâle de poussée de transistor de la porte 5.5-kW isolé par 20-kHz. DEWEY : 621 ISSN : 0278-0046 RAMEAU : Modulation En ligne : pe105@mail.hust.edu.cn

Rigid Finite Element Method for Upper Bound Limit Analysis of Soil Slopes Subjected to Pore Water Pressure / Chen, Jian in Journal of engineering mechanics, Vol. 130 N°8 (Août 2004) 

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