Active vibration control of a composite sandwich plate

2015 ◽  
Vol 128 ◽  
pp. 100-114 ◽  
Author(s):  
Antonio Zippo ◽  
Giovanni Ferrari ◽  
Marco Amabili ◽  
Marco Barbieri ◽  
Francesco Pellicano
Keyword(s):  
Vibration Control ◽  
Sandwich Plate ◽  
Active Vibration Control ◽  
Composite Sandwich ◽  
Active Vibration

Active Vibration Control of a Composite Sandwich Plate

2014 ◽  
Author(s):  
Giovanni Ferrari ◽  
Margherita Capriotti ◽  
Marco Amabili ◽  
Rinaldo Garziera
Keyword(s):  
Free Boundary ◽  
Boundary Conditions ◽  
Vibration Control ◽  
Sandwich Plate ◽  
Fiber Composite ◽  
Active Vibration Control ◽  
Free Boundary Conditions ◽  
Positive Position Feedback ◽  
Position Feedback ◽  
Active Vibration

The active vibration control of a rectangular sandwich plate by Positive Position Feedback is experimentally investigated. The thin walled structure, consisting of carbon-epoxy outer skins and a Nomex paper honeycomb core, has completely free boundary conditions. A detailed linear and nonlinear characterization of the vibrations of the plate was previously performed by our research group [1, 2]. Four couples of unidirectional Macro Fiber Composite (MFC) piezoelectric patches are used as strain sensors and actuators. The positioning of the patches is led by a finite element modal analysis, in the perspective of a modal control strategy aimed at the lowest four natural frequencies of the structure. Numerical and experimental verifications estimate the resulting influence of the control hardware on the modal characteristics of the plate. Experimental values are also extracted for the control authority of the piezoelectric patches in the chosen configuration. Single Input – Single Output (SISO) and MultiSISO Positive Position Feedback algorithms are tested and the transfer function parameters of the controller are tuned according to the previously known values of modal damping. A totally experimental procedure to determine the participation matrices, necessary for the Multiple-Input and Multiple-Output configuration, is developed. The resulting algorithm proves successful in selectively reducing the vibration amplitude of the first four vibration modes in the case of a broadband disturbance. PPF is therefore used profitably on laminated composite plates in conjunction with strain transducers, for the control of the low frequency range up to 100 Hz. The relevant tuning procedure moreover, proves straightforward, despite the relatively high number of transducers. The rigid body motions which arise in case of free boundary conditions do not affect the operation of the active control.

scholarly journals Semi-Active Vibration Control of Laminated Composite Sandwich Plate – An Experimental Study

2016 ◽  
Vol 63 (3) ◽  
pp. 367-377 ◽  
Author(s):  
R. Manoharan ◽  
R. Vasudevan ◽  
P. Edwin Sudhagar
Keyword(s):  
Magnetic Field ◽  
Boundary Conditions ◽  
Sandwich Plate ◽  
Natural Frequencies ◽  
Active Vibration Control ◽  
Laminated Composite ◽  
Sandwich Plates ◽  
Mr Fluid ◽  
Composite Sandwich ◽  
Active Vibration

Abstract In this study, the vibration analysis of fully and partially treated laminated composite Magnetorheological (MR) fluid sandwich plates has been investigated experimentally. The natural frequencies of fully and partially treated laminated composite MR fluid sandwich plates have been measured at various magnetic field intensities under two different boundary conditions. The variations of natural frequencies with applied magnetic field, boundary conditions and location of MR fluid pocket have been explored. Further, a comparison of natural frequencies of fully and partially treated MR fluid sandwich structure has been made at various magnetic field intensities.

scholarly journals Numerical analysis based on finite element method of active vibration control of a sandwich plate using piezoelectric patches

2020 ◽  
Vol 24 (1) ◽  
pp. 7-16
Author(s):  
Hanane Serhane ◽  
Kouider Bendine ◽  
Farouk Benallel Boukhoulda ◽  
Abdelkader Lousdad
Keyword(s):  
Finite Element ◽  
Vibration Control ◽  
Sandwich Plate ◽  
Plate Theory ◽  
Active Vibration Control ◽  
Piezoelectric Sensor ◽  
Element Model ◽  
Classical Plate Theory ◽  
Smart Sandwich Plate ◽  
Active Vibration

AbstractAn active method of vibration control of a smart sandwich plate (SSP) using discrete piezoelectric patches is investigated. In order to actively control the SSP vibration, the plate is equipped with three piezoelectric patches that act as actuators. Based on the classical plate theory, a finite element model with the contributions of piezoelectric sensor and actuator patches on the mass and stiffness of the sandwich plate was developed to derive the state space equation. LQR control algorithm is used in order to actively control the SSP vibration. The accuracy of the present model is tested in transient and harmonic loads. The applied piezoelectric actuator provides a damping effect on the SSP vibration. The amplitudes of vibrations and the damping time were significantly reduced when the control is ON.

A comparison of active vibration control techniques - Output feedback vs optimal control

1987 ◽  
Author(s):  
ZORAN MARTINOVIC ◽  
RAPHAEL HAFTKA ◽  
WILLIAM HALLAUER, JR. ◽  
GEORGE SCHAMEL, II
Keyword(s):  
Optimal Control ◽  
Vibration Control ◽  
Output Feedback ◽  
Active Vibration Control ◽  
Control Techniques ◽  
Active Vibration
Sign in / Sign up

Export Citation Format

Share Document