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Investigations of a noise control of a plate with four pairs of piezoelectric elements

100%

Wiciak J.

2006

tom Vol. 31, No. 4

503-512

The paper explores the potentials of reducing the amplitude of plate vibrations and radiated noise through the use of piezoelectric actuators in an asymmetric configuration. Tests were run on a aluminium plate, bonded on one edge. On one of the surfaces there were four piezoelectric actuators, on the other surface there were four piezoelectric sensors. One of the actuators served as vibrations generator, while the remaining were used for vibration control. The influence of the actuators activation and shape form on the structure's response are investigated. The finite element method analysis was performed, with the application of the ANSYS computer package, and then obtained results were confirmed experimentally.

Modelling and Vibration Control of Planar Systems by the use of Piezoelectric Actuators

100%

Leniowska L.

2009

tom Vol. 34, No. 4

507-519

In recent years, a great deal of work has been done on the development of control methodologies for structural and acoustic applications by using piezoelectric actuators. This paper presents the derivation of the models for planar structures with surface-mounted piezoelectric actuators. In the first approach, a parametric system identification procedure is employed to establish a mathematical model of the considered system, on the basis of the data collected from the measurements. The second approach consist in modelling of the fluid-acoustic-structural dynamics in the form of the partial differential equations, derived from physical principles such as forces and moments balance. Assuming axially symmetrical vibrations, on the basis of the models derived, the control algorithm has been developed for the circular plate to which centrally placed PZT actuators were bonded. The results of performed simulations are included and discussed.

Modelling of Mechanical Behaviour of High-Frequency Piezoelectric Actuators Using Bouc-Wen Model

75%

Kędra R. , Rucka M.

Assembling and testing of quasi-static hybrid piezoelectric motor based on electroactive lubrication principle

63%

Rouchon J.-F. , Harribey D. , Tran D.-H. , Ryndzionek R. , Sienkiewicz Ł. , Ronkowski M. , Michna M. , Kostro G.

nr 2

FEM analysis of beam vibrations control using piezoelectric transducers and a RLC shunt circuit.

63%

Filipek R. , Wiciak J.

2006

tom Vol. LIII, nr 1

5-21

Structural vibration damping via piezoelectric shunt circuits has received a great deal of attention recently as they are light, easy to use and provide for good vibration damping performance. This study investigates vibration damping of a clamped-free beam under harmonic excitations in the steady state. The damping control strategy utilises the piezoelectric properties of PZT materials and a shunt circuit consisting of series RLC elements in parallel configuration. The analysis was made for the first mode frequency and, at the same time, for the four resonance frequencies.

W ostatnich latach zauważa się wzrost zastosowania przetworników piezoelektrycznych wraz z obwodami elektrycznymi RLC, ze względu na właściwości elektromechaniczne, do tłumienia drgań strukturalnych. W pracy przedstawiono analizę tłumienia drgań belki jednostronnie utwierdzonej przy wymuszeniu harmonicznym, w stanie ustalonym. Tłumienie drgań uzyskano poprzez zastosowanie elementów piezoelektrycznych typu PZT i obwodu elektrycznego złożonego z równolegle połączonych dwójników szeregowych RLC. Analizę sterowania drganiami przeprowadzono dla pierwszej częstotliwości drgań oraz jednocześnie dla czterech pierwszych częstotliwości rezonansowych.