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Active Vibration Isolation of Rear-View Mirrors Based on Piezoceramic „Double Spiral“ Actuators

Kletz, Björn T. and Melcher, Jörg and Sinapius, Michael (2012) Active Vibration Isolation of Rear-View Mirrors Based on Piezoceramic „Double Spiral“ Actuators. ISMA2012, International Conference on Noise and Vibration Engineering, 17. - 19. Sept. 2012, Löwen, Belgien.

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For safety and comfort reasons, rear-view mirror vibrations have to be reduced. The sources of those vibrations are vehicle body vibrations and aerodynamic forces. This paper shows that an enhanced infinite stiff mirror system would not solve the vibrating mirror problem because the vibrations that are induced by the vehicle body would still excite the mirror. To solve this problem conventionally, a re-design of both the mirror system dynamics as well as the vehicle dynamics would be needed. To prevent such a cost intensive process this paper investigates novel active, multi axial vibration isolation interfaces that have an elastic behavior towards base plate vibrations and provide in parallel high stiffness with respect to external loads. Based on low stiffness double spiral interfaces with attached piezoelectric patch actuators it is shown how these opposed properties can be reached. The use of such interfaces enhances not only the dynamical properties of the mirror, but - in the manner of a truly multifunctional element - it replaces themotor to adjust the mirror position as well. This paper describes the analysis of the complete active isolation system, its actuator design and discusses diverse interface versions.

Item URL in elib:https://elib.dlr.de/79263/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Active Vibration Isolation of Rear-View Mirrors Based on Piezoceramic „Double Spiral“ Actuators
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:September 2012
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:vibration isolation, vehicle mirrors, force excitation, seismic base excitation, piezoelectric actuators
Event Title:ISMA2012, International Conference on Noise and Vibration Engineering
Event Location:Löwen, Belgien
Event Type:international Conference
Event Dates:17. - 19. Sept. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:V SH - Verbesserung der Sicherheit im Verkehr (old)
DLR - Research area:Transport
DLR - Program:V SH - Verbesserung der Sicherheit im Verkehr
DLR - Research theme (Project):V - Aktive Vibrations- und Lärmreduzierung an Fahrzeugen (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Böhringer-Thelen, Isolde
Deposited On:30 Nov 2012 12:05
Last Modified:30 Nov 2012 12:05

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