University of Twente Student Theses


Design and realization of a one-dimensional vibration isolation setup for floor vibrations

Guo, Xiaohu (2005) Design and realization of a one-dimensional vibration isolation setup for floor vibrations.

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Abstract:Nowadays, high precision machines have gained more and more interest. One important issue to ensure the precision of the machines is to reduce the unwanted effect of vibrations, either caused by the internal moving parts of the machines or various kinds of external disturbance. Floor vibration is a dominant disturbance. Because of the floor vibration's low-frequent characteristic, vibration isolation cannot simply rely on the application of passive means. Therefore, we will investigate the active hard mounting technique in this report. In this project, a one dimensional setup is designed and built with special focus on the suspension modes of the setup. Resonances are designed at 25 Hz and 80 Hz which respectively represent the machine supporting suspension and internal suspension. Besides that, we assume a 3 Hz resonance to model the floor suspension. The second part of this project is to identify the setup and implement the designed control strategy. The experiment results of applying the classic fixed gain feedback controller indicate 40 dB and 50 dB noise reduction respectively at the two resonances.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering MSc (60353)
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