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Active vibration control of a gyroscopic rotor using experimental modal analysis

Jungblut, Jens ; Fischer, Christian ; Rinderknecht, Stephan (2021)
Active vibration control of a gyroscopic rotor using experimental modal analysis.
(17-19 Februar 2021)
Conference or Workshop Item, Bibliographie

Abstract

A gyroscopic rotor exposed to unbalance is controlled with an active piezoelectrical bearing in this paper. A model is required in order to design a suited controller. Due to the lack of related publications utilizing piezoelectrical bearings and obtaining a modal model purely exploiting experimental modal analysis, this paper reveals a method to receive a modal model of a gyroscopic rotor system with an active piezoelectrical bearing. The properties of the retrieved model are then incorporated into the design of an originally model-free control approach for unbalance vibration elimination, which consists of a simple feedback control and an adaptive feedforward control. After the discussion on the limitations of the model-free control, a modified controller using the priorly identified modal model is implemented on an elementary rotor test-rig comparing its performance to the original model-free controller.

Item Type: Conference or Workshop Item
Erschienen: 2021
Creators: Jungblut, Jens ; Fischer, Christian ; Rinderknecht, Stephan
Type of entry: Bibliographie
Title: Active vibration control of a gyroscopic rotor using experimental modal analysis
Language: English
Date: 17 February 2021
Place of Publication: Gdansk, Poland
Book Title: Proceedings of SIRM 2021- The 14th International Conference on Dynamics of Rotating Machines
Event Dates: 17-19 Februar 2021
Abstract:

A gyroscopic rotor exposed to unbalance is controlled with an active piezoelectrical bearing in this paper. A model is required in order to design a suited controller. Due to the lack of related publications utilizing piezoelectrical bearings and obtaining a modal model purely exploiting experimental modal analysis, this paper reveals a method to receive a modal model of a gyroscopic rotor system with an active piezoelectrical bearing. The properties of the retrieved model are then incorporated into the design of an originally model-free control approach for unbalance vibration elimination, which consists of a simple feedback control and an adaptive feedforward control. After the discussion on the limitations of the model-free control, a modified controller using the priorly identified modal model is implemented on an elementary rotor test-rig comparing its performance to the original model-free controller.

Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Mechatronic Systems in Mechanical Engineering (IMS)
Date Deposited: 13 Apr 2021 05:34
Last Modified: 13 Apr 2021 05:34
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