Control of Vibration Suppression of Planar Structures Using Actuation by Clusters of Piezopatches

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00329672" target="_blank" >RIV/68407700:21220/18:00329672 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21230/18:00329672

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Control of Vibration Suppression of Planar Structures Using Actuation by Clusters of Piezopatches

Original language description

“Intelligent materials” are nowadays the perspective subject of research. Thanks to piezo material price developments, one type of this material could be the common material with heavily distributed piezo elements. Such material can still have lightness, flexibility and approximately other aspects of the original material, but with the added energy these properties may be partially modified. The paper deals with optimization and control of vibration suppression of the planar flexible systems equipped by regular and dense matrix of multiple sensors and actuators. The proposed concept consists from the steel cantilever beam with three piezoelectric patches. FEM model of such concept was created to test its accuracy compared to reality. A detailed description of this problem could be seen in [1]. On this model, the H-infinity controller was designed and subsequently tested on the real experiment with promising results. Based on these results, the model was extended to a square plate with distributed piezo patches in the 5x5 grid. The results from decentralized control law synthetized by the h-infinity will be presented. Results are promising, but such a heavily distributed grid still leads to demands on the initial expense. The actuators and sensors are not that big problem, the problem occurs with the amplifiers needed to power individual piezo elements. In order of further savings, four more concepts were proposed and will be presented. There are formed several groups “clusters” of piezo patches which are powered with a single amplifier and single control voltage. These clusters are then subject of an analysis based on total energy loss using the Hankel matrix and controllability criteria. The results showed that the system can be controlled with minimal energy loss for each mode with only nine amplifiers and nine different inputs voltages. That leads to saving the 16 amplifiers and open the possibilities of further improvements.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/GA16-21961S" target="_blank" >GA16-21961S: Mechatronic structures with haevily distributed actuators and sensors</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů