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PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON SOFT COMPUTING TECHNOLOGY IN CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING
Edited by: Y. Tsompanakis, J. Kruis and B.H.V. Topping
Design and Testing of Fuzzy Controllers on Smart Structures in the Presence of Delamination
G.K. Tairidis1, G.A. Foutsitzi2, P. Koutsianitis1, G. Drosopoulos1 and G.E. Stavroulakis1
1Department of Production Engineering and Management, Institute of Computational Mechanics and Optimization, Technical University of Crete, Chania, Greece
G.K. Tairidis, G.A. Foutsitzi, P. Koutsianitis, G. Drosopoulos, G.E. Stavroulakis, "Design and Testing of Fuzzy Controllers on Smart Structures in the Presence of Delamination", in Y. Tsompanakis, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Fourth International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 41, 2015. doi:10.4203/ccp.109.41
Keywords: smart structures, piezoelectric composites, fuzzy control, MATLAB, delamination.
In this paper a smart composite plate with delamination to the piezoelectric layers is considered. First a nonlinear damage model is introduced so that stress and strain, including delamination, can be calculated. For the design of fuzzy controllers, three different cases of delamination are investigated. Namely, the cases studied include 10, 50 and 90 percent delamination of the piezoelectric material. The controller was initially designed for non-delaminated structures. However, the simulation shows that this type of control provides satisfactory results for delaminated structures as well, even in structures with high percentage of delamination. The models and the controller were built within the MATLAB environment.
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