Modeling of a vehicle suspension with non linear elements and performance comparison to a semi-active model / Modelagem de uma suspensão veicular com elementos não lineares e comparação de seu desempenho com um modelo semi-ativo
AUTOR(ES)
Daniel da Silva Motta
DATA DE PUBLICAÇÃO
2005
RESUMO
This work describes the analysis and comparison of a vehicle suspension semi-active controlled to a non linear passive system. The mathematic model of a suspension system, detailed in this work, has seven degrees of freedom in order to represent a full vehicle system. The two semi-active control laws used in this work are based on the skyhook theory. In the first one the damping coefficient is continuously variable (semi-active CVD) and, in the second one the damping coefficient can assume a maximum or a minimum value (semi-active ON-OFF). To analyze the systems, it was developed a program using the SIMULINK computational tool. This program can evaluate different situations of vehicle suspension systems. The results show that the non linear passive system, semi-active ON-OFF and semi-active CVD alternate the better performance. To have a better understanding of semi-active performance, an optimization of the parameters used in the control laws is needed. This work also explains the importance of considering the non linear behavior of passive systems elements
ASSUNTO(S)
automobiles nonlinear mechanics automobiles suspesion automoveis - molas e supensão mecanica não-lenear automoveis
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000374377Documentos Relacionados
- Desenvolvimento de um sistema de suspensão com amortecimento semi-ativo "slow-active" com custo competitivo
- Controle semi-ativo em suspensões automotivas
- Controle semi-ativo de vibrações em estruturas utilizando amortecedor magnetorreológico
- Controle robusto de suspensão semi-ativa para caminhonetes utilizando amortecedores magneto-reológicos.
- The use of smart structures in the realization of effective semi-active Control systems for vibration reduction