Open Access

ARTICLE

Fixture Modifications for Effective Control of an Electrodynamic 3D-Shaker System

Kurthan Kersch^1,*, Elmar Woschke²

1 Robert Bosch GmbH, Powertrain Solutions, Center of Competence for Vibration, Schwieberdingen, 71701, Germany
2 IFME Institute of Mechanics, Otto von Guericke University Magdeburg, Magdeburg, 39106, Germany

* Corresponding Author: Kurthan Kersch. Email:

Sound & Vibration 2020, 54(2), 75-84. https://doi.org/10.32604/sv.2020.08909

Received 23 October 2019; Accepted 18 February 2020; Issue published 09 May 2020

Abstract

This work aims to improve the setup of an electrodynamic triaxial shaker prototype with respect to its usability for the automotive industry. Triaxial shakers being capable of meeting the corresponding requirements are not available as standard test equipment. Modifications on the fixture have to be conducted in order to ensure an effective control. The first part of the work is the qualitative description of the system behavior. Therefore, the shaker is treated as a black box. The second part is the modification of the test fixture in order to handle the resonances of the shaker, which is elementary for its usage. A setup is found, that improves testing within the desired frequency range. Thereby, acceleration levels are considered as well as excitation phases and coherences. The proposed setup is used for an exemplary specimen with two different control scenarios. Conclusions are then drawn about the usage of triaxial shakers.

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Keywords

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