Controle Fuzzy-GA de vibrações em uma viga engastada

Abstract

Vibrations are a cause of wear and in mechanical structures and can lead to catastrophic failures, therefore minimizing them is essential. In this work, vibration control was performed on a simulated cantilever beam subjected to varying loads using a fuzzy controller, a non-linear and versatile controller, whose parameters were tuned by a genetic algorithm. Effective fuzzy controller configurations were found that generated low vibrations in the beam when compared to the uncontrolled system, making the beam safer and more efficient. These results were similar, qualitatively, to those obtained by a PID controller also tuned by genetic algorithm. The results remained sufficiently good even after the addition of random noise in the beam vibration measurement and despite the use of a simple format of fuzzy controller, in such way that it is possible to improve them by using more complex formats, although these require more time for tuning.