Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
VIBRATION CONTROL OF SMART STRUCTURES WITH A FUZZY SLIDING MODE CONTROL SCHEME
Submission Author:
PHILIPPE MEDEIROS , RN , Brazil
Co-Authors:
PHILIPPE MEDEIROS, Wallace Moreira Bessa, Marcelo Savi, Aline Souza de Paula
Presenter: PHILIPPE MEDEIROS
doi://10.26678/ABCM.COBEM2017.COB17-2051
Abstract
Smart structures and systems have the main purpose to mimic living organisms, which are essentially characterized by an autoregulatory behavior. Therefore, this kind of structure has adaptive characteristics which are capable of changing its geometry or physical properties with the purpose of performing a specific task. In this work, a sliding mode controller with a proportional fuzzy inference is applied for active vibration control in a shape memory von Mises truss. In order to obtain a simpler controller, a polynomial model is used in the control law, while a more sophisticated version, which presents close agreement with experimental data, is applied to describe the shape memory alloy behavior of the structural elements. This system has a rich dynamic response and can easily reach a chaotic behavior even at moderate loads and frequencies. Therefore, this approach has the advantage of not only obtaining a simpler control law, but also allows its robustness to be evidenced. Numerical simulations are carried out in order to demonstrate the control system performance.
Keywords
Sliding mode control, Fuzzy logic, Smart Structures, von Mises truss, Shape memory alloys (SMA)
