Controle ativo de vibrações em vigas utilizando controle feedforward e elementos espectrais

• Ano de defesa: 2014
• Autor(a) principal: Menão, Mauro Cesar [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Vibração; Controle automatico; Análise espectral; Sistemas dinâmicos diferenciais; MATLAB (Programa de computador); Vibration
• Link de acesso: http://hdl.handle.net/11449/122233

This document shows different strategies for vibration control applied to a cantilever Euler-Bernoulli beam involving the technique of Feedforward control. The dynamic system is represented by the impedance matrix method and the solution of the equations of motions is obtained using spectral elements, which have solutions in frequency domain that are not approximations as in the usual finite element method, allowing accurate systems response calculation using few elements. The position of control force and control moments is studied in terms of optimal control function, to maximize performance and avoid instability in the structure. The simulations are performed to demonstrate the impact of the control force position along the beam length and the best distribution of the sensors position. The numerical sumulations are performed with Matlab. Model validation is performed using experimental tests and commercial finite element software Creo