Active Flutter Suppression of Smart-Skin Antenna Structures with Piezoelectric Sensors and Actuators

A smart-skin antenna structure is investigated for active flutter control with piezoelectric sensors and actuators. The skin antenna is designed as a multilayer sandwich structure with a dielectric polymer to perform the role of antenna or radar structures. The governing equations are developed according to the first-order shear deformation theory, and von Karman strain–displacement relationships are used for the moderate geometrical nonlinearity. To consider the supersonic airflow, first-order piston theory is performed for the aerodynamic pressures. The linear quadratic regulator (LQR) method is applied as a control algorithm, and Newmark’s method is studied to obtain the numerical results. In the present study, the effects of placements and shape of piezoelectric patches are discussed on the flutter control of the model in detail. In addition, the numerical results show that the skin antenna model can effectively suppress the panel flutter behaviors of the model, optimal conditions of piezoelectric patches are obtained for skin antenna structures.

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Digital Optimal Multivariable Control of a Smart Structure Featuring Piezoelectric Sensors and Actuators

Volume 3C: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration Control, Analysis, and Identification ◽

10.1115/detc1995-0629 ◽

1995 ◽

Author(s):

Muhammad Sannah ◽

Ahmad Smaili ◽

Tarek Lahdhiri

Keyword(s):

Equations Of Motion ◽

Linear Quadratic Regulator ◽

Element Model ◽

Smart Structure ◽

Piezoelectric Sensors ◽

Multivariable Control ◽

Linear Quadratic ◽

Sensors And Actuators ◽

Luenberger Observer ◽

Piezoelectric Sensors And Actuators

Abstract In this paper, a digital regulator is designed and experimentally implemented for a smart structure featuring piezoelectric sensors and actuators using optimal multivariable control techniques. The controller consists of a linear quadratic regulator with output weightings and a state estimator, Luenberger observer. The structure is a cantilever beam synthesized with two sets of sensor/actuator PZT ceramic piezoelectric plates bonded to the beam surface at the high strain locations corresponding to the first and second vibration modes. Equations of motion of the beam are developed using finite beam element model. The model includes the mass and rigidity of the PZT ceramics. Experimental results of two regulators differing in the number of modes considered are presented and discussed. The results proved the applicability of the concept and the stability and robustness of the control algorithm.

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Analysis of laminated composite plates integrated with piezoelectric sensors and actuators using higher-order shear deformation theory and isogeometric finite elements

Computational Materials Science ◽

10.1016/j.commatsci.2014.04.068 ◽

2015 ◽

Vol 96 ◽

pp. 495-505 ◽

Cited By ~ 112

Author(s):

P. Phung-Van ◽

L. De Lorenzis ◽

Chien H. Thai ◽

M. Abdel-Wahab ◽

H. Nguyen-Xuan

Keyword(s):

Finite Elements ◽

Shear Deformation ◽

Deformation Theory ◽

Shear Deformation Theory ◽

Laminated Composite ◽

Composite Plates ◽

Piezoelectric Sensors ◽

Laminated Composite Plates ◽

Sensors And Actuators ◽

Piezoelectric Sensors And Actuators

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Experiments on Optimal Vibration Control of a Flexible Beam Containing Piezoelectric Sensors and Actuators

Shock and Vibration ◽

10.1155/2003/594083 ◽

2003 ◽

Vol 10 (5-6) ◽

pp. 283-300 ◽

Cited By ~ 19

Author(s):

Gustavo L.C.M. Abreu ◽

José F. Ribeiro ◽

Valder Steffen Jr

Keyword(s):

Optimal Control ◽

Cantilever Beam ◽

Transfer Functions ◽

Flexible Structures ◽

Control Design ◽

Piezoelectric Sensors ◽

Flexible Beam ◽

Linear Quadratic ◽

Sensors And Actuators ◽

Piezoelectric Sensors And Actuators

In this paper, a digital regulator is designed and experimentally implemented for a flexible beam type structure containing piezoelectric sensors and actuators by using optimal control design techniques. The controller consists of a linear quadratic regulator with a state estimator, namely a Kalman observer. The structure is a cantilever beam containing a set of sensor/actuator PVDF/PZT ceramic piezoelectric patches bonded to the beam surface at the optimal location obtained for the first three vibration modes. The equations of motion of the beam are developed by using the assumed modes technique for flexible structures in infinite-dimensional models. This paper uses a method of minimizing the effect of the removed higher order modes on the low frequency dynamics of the truncated model by adding a zero frequency term to the low order model of the system. A measure of the controllability and observability of the system based on the modal cost function for flexible structures containing piezoelectric elements (intelligent structures) is used. The observability and controllability measures are determined especially to guide the placement of sensors and actuators, respectively. The experimental and numerical transfer functions are adjusted by using an optimization procedure. Experimental results illustrate the optimal control design of a cantilever beam structure.

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