Carlos D A L E X A N D R I A Bruni | Instituto Federal de Educação, Ciência e Tecnologia da Bahia (original) (raw)
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Papers by Carlos D A L E X A N D R I A Bruni
After the Protocol of Kyoto and of the ECHO 92-Rio de Janeiro, the attentions of the world focus ... more After the Protocol of Kyoto and of the ECHO 92-Rio de Janeiro, the attentions of the world focus to the preservation of the environment and of the maintainable use of the natural resources. People were looking for preserving environment for the future generations. Ever since, solutions are looked for the supply of energy in its more acquaintances forms and the substitution of the use of fossil fuels for the such alternative forms as: Photovoltaics, solar heat systems for water, wind , bio-diesel, etc. and in this context the Company of Engineering of the State of Bahia-Cerb changed a diesel pumping system by an wind one, It´s the first community system of this nature in Bahia. Facing problems with the model, a Cerb involved the academic segment of the Federal Center of Technological Education of Bahia-Cefetba looking for a solution. This work intends to demonstrate the possibilities of optimization of the pumping communit system that supply water to approximately 50 people in the place of Romão, municipal district of São Gabriel-Ba. Technical reports were published in AGRENERGD2004-Unicamp SP and Scientific Magazine ETC,Cefetba, 2005. A simulation of the increase of energy is presented for heights of 15 and 20m, considering the eletromecanical balance from the pumping energy to the wind turbine. From the accomplished bibliographical revision, we emphasized the mechanical aspects of the engineering once in UFRN, those studies concentrate on the Department of Mechanical Engineering while, in others eletroelectronic are more emphasized. Finally, documents that we judged important were enclosed for the perfect understanding of this work.
A partir do Protocolo de Kyoto e da ECO 92- Rio de Janeiro, as atencoes do mundo estao voltadas p... more A partir do Protocolo de Kyoto e da ECO 92- Rio de Janeiro, as atencoes do mundo estao voltadas para a preservacao do meio ambiente e do uso sustentavel dos recursos naturais, preservando-os para as geracoes futuras. Desde entao, buscam-se solucoes para o suprimento de energia nas suas mais conhecidas formas e a substituicao do uso de combustiveis fosseis pelas formas alternativas tais como solar fotovoltaica, termo-solar, eolica, bio-diesel, etc. e neste contexto a Companhia de Engenharia do Estado da Bahia (Cerb) substituiu um sistema de bombeamento com moto-bomba a oleo diesel por um sistema de bombeamento com energia eolica, primeiro sistema coletivo desta natureza. Diante dos problemas surgidos, partiu-se para a solucao envolvendo o segmento academico do Centro Federal de Educacao Tecnologica da Bahia Cefet-BA. Este trabalho pretende demonstrar as possibilidades de otimizacao do sistema de bombeamento comunitario que atende aproximadamente 50 pessoas na localidade de Romao, municipio de Sao Gabriel-Ba, tendo seus relatorios tecnicos publicados no AGRENERGD2004-Unicamp SP e Revista Cientifica ETC, Cefet-BA, 005. E apresentada uma simulacao da disponibilidade energetica para alturas de 15m e 20m, considerando o balanco eletromecânico desde o bombeamento ate o conversor eolico. Da revisao bibliografica realizada, optou-se pela enfase aos aspectos mecânicos da engenharia uma vez que na UFRN, esses estudos se concentram no Departamento de Engenharia Mecânica enquanto que, em outras, os aspectos eletro-eletronicos sao mais enfatizados. Finalmente, foram anexados documentos considerados importantes para a perfeita compreensao deste trabalho
Journal of Low Frequency Noise, Vibration and Active Control
Based on the notions of spectrum sensitivities, proposed by us earlier, we develop a novel optimi... more Based on the notions of spectrum sensitivities, proposed by us earlier, we develop a novel optimization approach to deal with robustness in the closed-loop eigenvalues for partial quadratic eigenvalue assignment problem arising in active vibration control. A distinguished feature of this new approach is that the objective function is composed of only the system and the closed-loop feedback matrices. It does not need an explicit knowledge of the eigenvalues and eigenvectors. Furthermore, the approach is applicable to both the state-feedback and derivative feedback designs. These features make the approach viable to design an active vibration controller for practical applications to large real-life structures. A comparative study with existing algorithms and a study on the transient response of a real-life system demonstrate the effectiveness, superiority, and competitiveness of the proposed approach.
After the Protocol of Kyoto and of the ECHO 92-Rio de Janeiro, the attentions of the world focus ... more After the Protocol of Kyoto and of the ECHO 92-Rio de Janeiro, the attentions of the world focus to the preservation of the environment and of the maintainable use of the natural resources. People were looking for preserving environment for the future generations. Ever since, solutions are looked for the supply of energy in its more acquaintances forms and the substitution of the use of fossil fuels for the such alternative forms as: Photovoltaics, solar heat systems for water, wind , bio-diesel, etc. and in this context the Company of Engineering of the State of Bahia-Cerb changed a diesel pumping system by an wind one, It´s the first community system of this nature in Bahia. Facing problems with the model, a Cerb involved the academic segment of the Federal Center of Technological Education of Bahia-Cefetba looking for a solution. This work intends to demonstrate the possibilities of optimization of the pumping communit system that supply water to approximately 50 people in the place of Romão, municipal district of São Gabriel-Ba. Technical reports were published in AGRENERGD2004-Unicamp SP and Scientific Magazine ETC,Cefetba, 2005. A simulation of the increase of energy is presented for heights of 15 and 20m, considering the eletromecanical balance from the pumping energy to the wind turbine. From the accomplished bibliographical revision, we emphasized the mechanical aspects of the engineering once in UFRN, those studies concentrate on the Department of Mechanical Engineering while, in others eletroelectronic are more emphasized. Finally, documents that we judged important were enclosed for the perfect understanding of this work.
A partir do Protocolo de Kyoto e da ECO 92- Rio de Janeiro, as atencoes do mundo estao voltadas p... more A partir do Protocolo de Kyoto e da ECO 92- Rio de Janeiro, as atencoes do mundo estao voltadas para a preservacao do meio ambiente e do uso sustentavel dos recursos naturais, preservando-os para as geracoes futuras. Desde entao, buscam-se solucoes para o suprimento de energia nas suas mais conhecidas formas e a substituicao do uso de combustiveis fosseis pelas formas alternativas tais como solar fotovoltaica, termo-solar, eolica, bio-diesel, etc. e neste contexto a Companhia de Engenharia do Estado da Bahia (Cerb) substituiu um sistema de bombeamento com moto-bomba a oleo diesel por um sistema de bombeamento com energia eolica, primeiro sistema coletivo desta natureza. Diante dos problemas surgidos, partiu-se para a solucao envolvendo o segmento academico do Centro Federal de Educacao Tecnologica da Bahia Cefet-BA. Este trabalho pretende demonstrar as possibilidades de otimizacao do sistema de bombeamento comunitario que atende aproximadamente 50 pessoas na localidade de Romao, municipio de Sao Gabriel-Ba, tendo seus relatorios tecnicos publicados no AGRENERGD2004-Unicamp SP e Revista Cientifica ETC, Cefet-BA, 005. E apresentada uma simulacao da disponibilidade energetica para alturas de 15m e 20m, considerando o balanco eletromecânico desde o bombeamento ate o conversor eolico. Da revisao bibliografica realizada, optou-se pela enfase aos aspectos mecânicos da engenharia uma vez que na UFRN, esses estudos se concentram no Departamento de Engenharia Mecânica enquanto que, em outras, os aspectos eletro-eletronicos sao mais enfatizados. Finalmente, foram anexados documentos considerados importantes para a perfeita compreensao deste trabalho
Journal of Low Frequency Noise, Vibration and Active Control
Based on the notions of spectrum sensitivities, proposed by us earlier, we develop a novel optimi... more Based on the notions of spectrum sensitivities, proposed by us earlier, we develop a novel optimization approach to deal with robustness in the closed-loop eigenvalues for partial quadratic eigenvalue assignment problem arising in active vibration control. A distinguished feature of this new approach is that the objective function is composed of only the system and the closed-loop feedback matrices. It does not need an explicit knowledge of the eigenvalues and eigenvectors. Furthermore, the approach is applicable to both the state-feedback and derivative feedback designs. These features make the approach viable to design an active vibration controller for practical applications to large real-life structures. A comparative study with existing algorithms and a study on the transient response of a real-life system demonstrate the effectiveness, superiority, and competitiveness of the proposed approach.