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Dynamic behavior of piezoelectric bimorph beams with a delamination zone
Adel Zemirline,Mohammed Ouali,Ali Mahieddine 국제구조공학회 2015 Steel and Composite Structures, An International J Vol.19 No.3
The First Order Shear Deformation Theory (FOSDT) is considered to study the dynamic behavior of a bimorph beam. A delamination zone between the upper and the lower layer has been taken into consideration; the beam is discretised using the finite elements method (FEM). Several parameters are taken into consideration like structural damping, the geometry, the load nature and the configurations of the boundary conditions. Results show that the delamination between the upper and the lower layer affects considerably the actuation.
Kheir Eddine Bouazza,Mohammed Ouali 제어·로봇·시스템학회 2013 International Journal of Control, Automation, and Vol.11 No.6
This paper deals with stabilization of a class of delay discrete-time nonlinear systems through state and output feedback. We provide an explicit bounded state feedback law as an extension of the Jurdjevic-Quinn method, from nonlinear theory, to this class of systems. Next, we present a useful and systematic approach to design an observer for the same class of systems. Then, we show how the global stabilization problem via dynamic output feedback can be solved by using the two previous results. Finally, numerical examples are given to illustrate the effectiveness of the proposed design method.