Vibration Attenuation of a Composite Beam by Fuzzy Control

Purpose The present work proposes active vibration control in a composite material beam using electromagnetic actuators. The advantage of using electromagnetic actuators is applying control force without mechanical contact. Method In order to evaluate the performance of the fuzzy control technique, a controller using fuzzy logic was designed. The mathematical model of the beam was obtained through the eigensystem realization algorithm/observer/Kalman identification, which consists of an identification method used to identify modal parameters in complex structures. With the obtained mathematical model, the controllers were designed, responsible for determining the control effort. Electromagnetic actuators are responsible for applying control efforts to stabilize the system. Results The numerical simulations responses and the experimental system control responses were obtained from this. The system vibration attenuation was obtained in both procedures with three types of controllers, such that all responses were evaluated, both in the time and frequency domains. Conclusion Finally, the robustness of the controller was analyzed from the variation inserted in the dynamic matrix of the system, thus validating the studied methodology.