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Exploiting gyroscopic effects for resonance elimination of an elastic rotor utilizing only one piezo actuator

Jungblut, Jens ; Franz, Daniel ; Fischer, Christian ; Rinderknecht, Stephan (2023)
Exploiting gyroscopic effects for resonance elimination of an elastic rotor utilizing only one piezo actuator.
In: Bulletin of the Polish Academy of Sciences. Technical Sciences, 71 (6)
doi: 10.24425/bpasts.2023.147060
Article, Bibliographie

Abstract

A gyroscopic rotor exposed to unbalance and internal damping is controlled with an active piezoelectrical bearing in this paper. The used rotor test-rig is modelled using an FEM approach. The present gyroscopic effects are then used to derive a control strategy which only requires a single piezo actuator, while regular active piezoelectric bearings require two. Using only one actuator generates an excitation which contains an equal amount of forward and backward whirl vibrations. Both parts are differently amplified by the rotor system due to gyroscopic effects which cause speed-dependent different eigenfrequencies for forward and backward whirl resonances. This facilitates eliminating reso- nances and stabilize the rotor system with only one actuator but requires two sensors. The control approach is validated with experiments on a rotor test-rig and compared to a control which uses both actuators

Item Type: Article
Erschienen: 2023
Creators: Jungblut, Jens ; Franz, Daniel ; Fischer, Christian ; Rinderknecht, Stephan
Type of entry: Bibliographie
Title: Exploiting gyroscopic effects for resonance elimination of an elastic rotor utilizing only one piezo actuator
Language: English
Date: 2023
Publisher: PAS
Journal or Publication Title: Bulletin of the Polish Academy of Sciences. Technical Sciences
Volume of the journal: 71
Issue Number: 6
DOI: 10.24425/bpasts.2023.147060
URL / URN: https://journals.pan.pl/dlibra/publication/147060/edition/12...
Abstract:

A gyroscopic rotor exposed to unbalance and internal damping is controlled with an active piezoelectrical bearing in this paper. The used rotor test-rig is modelled using an FEM approach. The present gyroscopic effects are then used to derive a control strategy which only requires a single piezo actuator, while regular active piezoelectric bearings require two. Using only one actuator generates an excitation which contains an equal amount of forward and backward whirl vibrations. Both parts are differently amplified by the rotor system due to gyroscopic effects which cause speed-dependent different eigenfrequencies for forward and backward whirl resonances. This facilitates eliminating reso- nances and stabilize the rotor system with only one actuator but requires two sensors. The control approach is validated with experiments on a rotor test-rig and compared to a control which uses both actuators

Uncontrolled Keywords: active vibration control, piezoelectric bearing, gyroscopic effects, active damping
Additional Information:

Artikel-ID: e147060

Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Mechatronic Systems in Mechanical Engineering (IMS)
Date Deposited: 09 Jan 2024 08:57
Last Modified: 09 Jan 2024 09:03
PPN: 514530480
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