Active vibration control of a smart functionally graded piezoelectric material plate using an adaptive fuzzy controller strategy

Abstract

In this article, the active vibration control of a smart structure made out of a single functionally graded piezoelectric material layer, equipped with a network of discrete electrodes, is studied. The material properties vary continuously across the direction of thickness, so that top and bottom surfaces consist of pure PZT4 and the mid surface is composed of pure aluminium. The percolation phenomenon is taken into account. A functionally graded piezoelectric material plate finite element based on the first-order shear deformation theory hypothesis and layer-wise approximation for electric potential is implemented. An optimization procedure is considered to define the relevant electrodes for actuators and sensors, based on controllable and observable criteria. An adaptative fuzzy controller system is used, activating with relevance the actuators according to the most excited eigenmodes. Simulations show the effectiveness of this kind of concept.

Research on vibration mechanism and control technology of building structure under earthquake action

“…The neural network-based vibration reduction mechanism was proposed by [17] for protecting the large building structured from earthquakes and the real earthquake testing of this method is done at Tohoku 2011 and Boumerdès 2003 earthquakes. A controller model was proposed by the authors in [18] by combining the tan hyperbolic function and the sliding mode terminal in order to obtain stabilized outcomes while avoiding chattering. The PID controllers have widely being used in the practical practices of earthquake vibration monitoring due to simplicity in structure and ease of implementation.…”

Wave propagation analysis of porous functionally graded piezoelectric nanoplates with a visco-Pasternak foundation

“…x δε x + σ (1) x δ∇ε x + σ (0) y δε y + σ (1) y δ∇ε y + σ (0) xy δγ xy + σ (1) xy δ∇γ xy + σ (0) yz δγ yz + σ (1)…”

“…Smart materials are widely used in aerospace, biomedical, and transportation industries owing to their excellent electromechanical properties [1][2] . Piezoelectric materials, a widely used smart material, have special electromechanical coupling properties that enable mutual conversion of electrical and mechanical energy, which imparts great potential advantages to the ma-terials in various applications such as sensors, miniature piezoelectric generators, and resonant ultrasonic inspection devices [3] , thus promoting the rapid development of nanoelectromechanical systems (NEMS).…”

Evaluation of mechanical properties of Ni/BaTiO3 functionally graded material

“…As a result, they offer better specific strength, toughness and fatigue resistance than classical composite materials, making them appropriate for transducers use [1]. Numerical simulations showed their effectiveness in active vibration control [2][3][4] and energy harvesting [5,6].…”