Application of intelligent integrated optimization system for raw material proportioning in lead – zinc sintering blending process / Chun-Sheng Wang in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6404-6415 Titre : Application of intelligent integrated optimization system for raw material proportioning in lead – zinc sintering blending process Type de document : texte imprimé Auteurs : Chun-Sheng Wang, Auteur ; Min Wu, Auteur Année de publication : 2012 Article en page(s) : pp. 6404-6415 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Sintering Proportioning Raw materials Optimization Résumé : The blending process as the first working procedure in lead-zinc sintering processes (LZSP) is a key step to guarantee the quality of products in the lead-zinc sintering production. This paper presents an intelligent integrated optimization system (IIOS) with a hierarchical configuration for raw material proportioning in the lead-zinc sintering blending process (LZSBP). First, considering the relationships between the mixture ratio and the production indices, back-propagation neural network (BPNN) models are established to predict the agglomerate compositions. Then, a raw material proportioning optimization strategy (RMPOS) is proposed to determine an optimal mixture ratio and actualize the optimization of the blending process. The proportioning optimization is implemented through qualitative and quantitative synthetic optimization for the primary proportioning, the zone optimization for the secondary proportioning, and the intelligent coordination between them. The practical running results demonstrate the validity of the proposed optimization strategies. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867292 [article] Application of intelligent integrated optimization system for raw material proportioning in lead – zinc sintering blending process [texte imprimé] / Chun-Sheng Wang, Auteur ; Min Wu, Auteur . - 2012 . - pp. 6404-6415. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6404-6415 Mots-clés : Sintering Proportioning Raw materials Optimization Résumé : The blending process as the first working procedure in lead-zinc sintering processes (LZSP) is a key step to guarantee the quality of products in the lead-zinc sintering production. This paper presents an intelligent integrated optimization system (IIOS) with a hierarchical configuration for raw material proportioning in the lead-zinc sintering blending process (LZSBP). First, considering the relationships between the mixture ratio and the production indices, back-propagation neural network (BPNN) models are established to predict the agglomerate compositions. Then, a raw material proportioning optimization strategy (RMPOS) is proposed to determine an optimal mixture ratio and actualize the optimization of the blending process. The proportioning optimization is implemented through qualitative and quantitative synthetic optimization for the primary proportioning, the zone optimization for the secondary proportioning, and the intelligent coordination between them. The practical running results demonstrate the validity of the proposed optimization strategies. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867292

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Design of robust modified repetitive-control system for linear periodic plants / Lan Zhou in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 134 N° 1 (Janvier 2012)  

Public ISBD [article]  inTransactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 134 N° 1 (Janvier 2012) . - 07 p. Titre : Design of robust modified repetitive-control system for linear periodic plants Type de document : texte imprimé Auteurs : Lan Zhou, Auteur ; Jinhua She, Auteur ; Min Wu, Auteur Année de publication : 2012 Article en page(s) : 07 p. Note générale : Dynamic systems Langues : Anglais (eng) Mots-clés : Asymptotic stability Continuous systems Control system synthesis Discrete Linear matrix inequalities Lyapunov methods Robust control Servomechanisms Index. décimale : 553 Géologie économique. Minérographie. Minéraux. Formation et gisements de minerais Résumé : This paper concerns a linear-matrix-inequality (LMI)-based method of designing a robust modified repetitive-control system (MRCS) for a class of strictly proper plants with periodic uncertainties. It exploits the nature of control and learning and the periodicity and continuity of repetitive control to convert the design problem into a robust stabilization problem for a continuous-discrete 2D system. The LMI technique and Lyapunov stability theory are used to derive an LMI-based asymptotic stability condition that can be used directly in the design of the gains of the repetitive controller. Two tuning parameters in the condition enable preferential adjustment of control and learning. A numerical example illustrates the tuning procedure and demonstrates the effectiveness of the method. DEWEY : 553 ISSN : 0022-0434 En ligne : http://www.asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013400 [...] [article] Design of robust modified repetitive-control system for linear periodic plants [texte imprimé] / Lan Zhou, Auteur ; Jinhua She, Auteur ; Min Wu, Auteur . - 2012 . - 07 p. Dynamic systems Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 134 N° 1 (Janvier 2012) . - 07 p. Mots-clés : Asymptotic stability Continuous systems Control system synthesis Discrete Linear matrix inequalities Lyapunov methods Robust control Servomechanisms Index. décimale : 553 Géologie économique. Minérographie. Minéraux. Formation et gisements de minerais Résumé : This paper concerns a linear-matrix-inequality (LMI)-based method of designing a robust modified repetitive-control system (MRCS) for a class of strictly proper plants with periodic uncertainties. It exploits the nature of control and learning and the periodicity and continuity of repetitive control to convert the design problem into a robust stabilization problem for a continuous-discrete 2D system. The LMI technique and Lyapunov stability theory are used to derive an LMI-based asymptotic stability condition that can be used directly in the design of the gains of the repetitive controller. Two tuning parameters in the condition enable preferential adjustment of control and learning. A numerical example illustrates the tuning procedure and demonstrates the effectiveness of the method. DEWEY : 553 ISSN : 0022-0434 En ligne : http://www.asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JDSMAA00013400 [...]

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Estimation of the molar heat capacity change on melting of organic compounds / Min Wu in Industrial & engineering chemistry research, Vol. 48 N° 6 (Mars 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - p. 3260 Titre : Estimation of the molar heat capacity change on melting of organic compounds Type de document : texte imprimé Auteurs : Min Wu, Auteur ; Samuel Yalkowsky, Auteur Année de publication : 2009 Article en page(s) : p. 3260 Note générale : Chemical engineering Langues : Anglais (eng) Note de contenu : Addition and correction of the same article in volume 48 N° 2 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900184v [article] Estimation of the molar heat capacity change on melting of organic compounds [texte imprimé] / Min Wu, Auteur ; Samuel Yalkowsky, Auteur . - 2009 . - p. 3260. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - p. 3260 Note de contenu : Addition and correction of the same article in volume 48 N° 2 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900184v

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ZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions / Min Wu in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6304-6309 Titre : ZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions Type de document : texte imprimé Auteurs : Min Wu, Auteur ; Chun-long Li, Auteur ; Jin Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 6304-6309 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Dilute solution Résumé : A reactive isolation approach for the recovery of 1,3-propanediol (1,3-PD) from dilute aqueous solutions was performed on ZrO2―MoO3 solid heterogeneous catalysts through a cyclic reaction with aldehyde to form acetals (2-methyl-1,3-dioxane, 2MD). The effects of catalyst composition, reaction temperature, reaction time, and optimal dose on the conversion rates of acetalization and hydrolysis were investigated. For ZrO2―10 wt % MoO3 prepared by the precipitation―impregnation method, the conversion rate of 1,3-PD in acetalization reached 95.7% at 60 °C for 2 h, and the acetals conversion in the hydrolysis reaction reached 97.0% at 100 °C for 10 h. The stability test showed that the 1,3-PD conversion rate still reached 87.3% after five cycles of use. In terms of the catalytic activity in acetalization, the 10 wt % catalyst exhibited much higher selectivity in the simulated fermentation liquid for 1,3-PD than ethanol, 2,3-butanediol, and glycerol. This indicates that ZrO2―10 wt % MoO3 mixed oxide has the best characteristics for the extraction of 1,3-PD from dilute aqueous solutions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867281 [article] ZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions [texte imprimé] / Min Wu, Auteur ; Chun-long Li, Auteur ; Jin Zhang, Auteur . - 2012 . - pp. 6304-6309. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6304-6309 Mots-clés : Dilute solution Résumé : A reactive isolation approach for the recovery of 1,3-propanediol (1,3-PD) from dilute aqueous solutions was performed on ZrO2―MoO3 solid heterogeneous catalysts through a cyclic reaction with aldehyde to form acetals (2-methyl-1,3-dioxane, 2MD). The effects of catalyst composition, reaction temperature, reaction time, and optimal dose on the conversion rates of acetalization and hydrolysis were investigated. For ZrO2―10 wt % MoO3 prepared by the precipitation―impregnation method, the conversion rate of 1,3-PD in acetalization reached 95.7% at 60 °C for 2 h, and the acetals conversion in the hydrolysis reaction reached 97.0% at 100 °C for 10 h. The stability test showed that the 1,3-PD conversion rate still reached 87.3% after five cycles of use. In terms of the catalytic activity in acetalization, the 10 wt % catalyst exhibited much higher selectivity in the simulated fermentation liquid for 1,3-PD than ethanol, 2,3-butanediol, and glycerol. This indicates that ZrO2―10 wt % MoO3 mixed oxide has the best characteristics for the extraction of 1,3-PD from dilute aqueous solutions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867281

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