Análise de geradores piezelétricos acoplados com circuitos retificadores operando em regime caótico

• Ano de defesa: 2014
• Autor(a) principal: Basquerotto, Cláudio Henrique Cerqueira Costa [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Sistemas lineares; Dinâmica; Comportamento caótico nos sistemas; Liapunov, Funções de; Teoria da bifurcação; Nonlinear systems
• Link de acesso: http://hdl.handle.net/11449/123118; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/23-04-2015/000824281.pdf

Energy harvesting from vibrations has been an area of enormous expansion in the last years. While linear vibratory energy harvesters have received the majority of the literature’s attention, some current research is focused on the concept of purposeful inclusion of nonlinearities for broadband transduction. The process of harvesting energy must have two steps: the extraction of energy and the utilization of this energy to feed in electronic devices. Thus, this work discusses the use of a non-linear mechanical device which has chaos to capture energy coupled to half-wave rectifier circuit to transform the alternating voltage generated by the PZT for continuous voltage to a possible device electronic. An analysis of the dynamic interaction between the two devices is done and it can be concluded that it is possible to use a mechanical device that operates in chaos coupled to a rectification circuit in order to generate more power