Fuzzy Modal Control Applied to Smart Composite Structure

11th International Conference on Damage Assessment of Structures

物理学;材料科学

Koroishi, E.H.^1 ; Faria, A.W.^2 ; Lara-Molina, F.A.^1 ; Steffen, V.^3

Federal Technological University of Paraná, Department of Mechanical Engineering, Campus Cornélio Procópio, Av. Alberto Carazzai, 1640, Cornélio Procópio - PR

86300-000, Brazil^1

Federal University of Triangulo Mineiro, Institute of Technology and Exact Sciences, Department of Civil Engineering, Av. Dr. Randolfo Borges Junior, 1250, Unidade I - Uberaba - MG

38064-200, Brazil^2

School of Mechanical Engineering, Federal University of Uberlândia, Campus Santa Monica, Av. João Naves de Ávila 2121, Uberlândia - MG

38408-100, Brazil^3

关键词: Active vibration controls;    Control methodology;    Controlling structure;    Electrical field;    Equivalent layer;    Mechanical displacements;    Nonlinear behavior;    Smart-composite structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/628/1/012090/pdf
DOI  :  10.1088/1742-6596/628/1/012090

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper proposes an active vibration control technique, which is based on Fuzzy Modal Control, as applied to a piezoelectric actuator bonded to a composite structure forming a so-called smart composite structure. Fuzzy Modal Controllers were found to be well adapted for controlling structures with nonlinear behavior, whose characteristics change considerably with respect to time. The smart composite structure was modelled by using a so called mixed theory. This theory uses a single equivalent layer for the discretization of the mechanical displacement field and a layerwise representation of the electrical field. Temperature effects are neglected. Due to numerical reasons it was necessary to reduce the size of the model of the smart composite structure so that the design of the controllers and the estimator could be performed. The role of the Kalman Estimator in the present contribution is to estimate the modal states of the system, which are used by the Fuzzy Modal controllers. Simulation results illustrate the effectiveness of the proposed vibration control methodology for composite structures.