Author(s):
de Abreu, Gustavo Luiz Chagas Manhães [UNESP] ; Maesta, Marcelo F. [UNESP] ; Lopes Junior, Vicente [UNESP] ; De Marqui Junior, Carlos ; Faria, Cassio T. ; Inman, Daniel J.
Date: 2018
Persistent ID: http://hdl.handle.net/11449/177513
Origin: Oasisbr
Subject(s): Active angular control; Fuzzy logic; Sectioned airfoil; Shape memory alloys; Active angular control; Active angular control; Fuzzy logic; Fuzzy logic; Sectioned airfoil; Sectioned airfoil; Shape memory alloys; Shape memory alloys
Description
Made available in DSpace on 2018-12-11T17:25:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-09-01
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
The present work illustrates an example of shape memory alloys and fuzzy controllers applied to active angular control of a sectioned airfoil. The main objective of the proposed control system is to modify the camber line of an airfoil based on the relative rotation between the different sections of the profile, given a reference angle. The changes of the sectioned airfoil angle result from the contraction/expansion of the shape memory alloy caused by heating of the wire with an electric current that changes its temperature by the Joule effect. Considering the presence of plant’s nonlinear effects, especially in the mathematical model of the alloy, this work proposes the application of a control system based on fuzzy logic theory. Through numerical and experimental tests, the performance of the fuzzy controller is compared with an on–off controller applied in an airfoil.
Univ Estadual Paulista, UNESP
Departamento de Engenharia Aeronáutica, Universidade de São Paulo, USP
Department of Aerospace Engineering, University of Michigan
Univ Estadual Paulista, UNESP
