elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Optimal placement of flat piezoceramic actuators for feedforward systems under the influence of real-time hardware delays

Haase, Thomas und Misol, Malte und Rose, Michael (2015) Optimal placement of flat piezoceramic actuators for feedforward systems under the influence of real-time hardware delays. Journal of Sound and Vibration (345), Seiten 34-46. Elsevier. doi: 10.1016/j.jsv.2015.02.009. ISSN 0022-460X.

Dieses Archiv kann nicht den Volltext zur Verfügung stellen.

Offizielle URL: http://dx.doi.org/10.1016/j.jsv.2015.02.009

Kurzfassung

Active vibration control (AVC)systems have been investigated for several decades now. Many researchers have shown that an optimal actuator placement results in an improved performance of the AVC system. In the case of a broadband disturbance, feedback systems are very often used to control plate structures. Detailed optimisation routines for feedback systems that incorporate not only the optimisation of the actuator placement but also the controller design (e.g. feedback gains, H1 �controller)can be found in the literature. Yet, in the case of a feedforward control design for a broadband disturbance, special aspects like causality and coherence limit the performance of an AVC system. The linear quadratic optimal control theory (LQOCT)is very often used to calculate the optimal actuator voltages for the placement of actuators in a feedforward control system. However, the LQOCT completely neglects the causality constraint of a real-time applicable feedforward control system. The aim of this work is to study the influence of analogue and digital signal processing delays on the actuator placement in a feedforward control system under broadband excitation and to improve the predicted performance of an AVC system with optimised actuator placements. Therefore, a pre-design tool is used to optimise the actuator placement and it is shown that the actuator placement changes significantly by the integration of the signal processing delays in to the pre-design tool. Due to their frequent use in smart structures piezoelectric patch actuators are used in this study.Furthermore, the optimised actuator placement is used for an experiment with a feedforward controller and shows an improved performance of 3.2 dB in the averaged error signal spectrum over a frequency range from 22.5 Hz up to 600 Hz compared to the actuator placed without signal processing delays.

elib-URL des Eintrags:https://elib.dlr.de/97047/
Dokumentart:Zeitschriftenbeitrag
Titel:Optimal placement of flat piezoceramic actuators for feedforward systems under the influence of real-time hardware delays
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Haase, ThomasFA-ADANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Misol, MalteFA-ADANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Rose, MichaelFA-ADANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2015
Erschienen in:Journal of Sound and Vibration
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
DOI:10.1016/j.jsv.2015.02.009
Seitenbereich:Seiten 34-46
Verlag:Elsevier
Name der Reihe:Elsevier Journal of Sound and Vibration
ISSN:0022-460X
Status:veröffentlicht
Stichwörter:active vibration control, causality, feedforward, optimla actuator placement
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation und Validierung (alt), L - Systeme und Kabine (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Adaptronik
Hinterlegt von: Haase, Thomas
Hinterlegt am:06 Jul 2015 09:52
Letzte Änderung:21 Nov 2023 13:59

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.