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System identification of a gyroscopic rotor throughout rotor-model-free control using the frequency domain LMS

Jungblut, Jens ; Fischer, Christian ; Rinderknecht, Stephan (2022)
System identification of a gyroscopic rotor throughout rotor-model-free control using the frequency domain LMS.
In: IFAC-PapersOnLine, 55 (25)
doi: 10.1016/j.ifacol.2022.09.350
Article, Bibliographie

Abstract

A gyroscopic rotor is controlled and studied. A rotor-model-free control which is based on the transform domain least mean squares algorithm is implemented. An algorithm is proposed which compensates the delay of the transformation for quasi-periodic signals. Experiments show that this algorithm has a positive effect on the first resonance and that it is sufficient to compute the transformation only once per revolution. The rotor-model-free control is then used to excite the system during operation for its identification. A non-parametric model is estimated using two run-outs, one with and one without adaptive feedforward control. Transient phenomena occur after passing the first lightly damped resonance causing a distortion in the estimation. This is remedied by fitting a modal model to the estimation.

Item Type: Article
Erschienen: 2022
Creators: Jungblut, Jens ; Fischer, Christian ; Rinderknecht, Stephan
Type of entry: Bibliographie
Title: System identification of a gyroscopic rotor throughout rotor-model-free control using the frequency domain LMS
Language: English
Date: 30 August 2022
Publisher: Elsevier
Journal or Publication Title: IFAC-PapersOnLine
Volume of the journal: 55
Issue Number: 25
DOI: 10.1016/j.ifacol.2022.09.350
URL / URN: https://www.sciencedirect.com/science/article/pii/S240589632...
Abstract:

A gyroscopic rotor is controlled and studied. A rotor-model-free control which is based on the transform domain least mean squares algorithm is implemented. An algorithm is proposed which compensates the delay of the transformation for quasi-periodic signals. Experiments show that this algorithm has a positive effect on the first resonance and that it is sufficient to compute the transformation only once per revolution. The rotor-model-free control is then used to excite the system during operation for its identification. A non-parametric model is estimated using two run-outs, one with and one without adaptive feedforward control. Transient phenomena occur after passing the first lightly damped resonance causing a distortion in the estimation. This is remedied by fitting a modal model to the estimation.

Uncontrolled Keywords: Piezoelectric Bearing, Rotor Dynamics, System Identification
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Mechatronic Systems in Mechanical Engineering (IMS)
Date Deposited: 13 Dec 2022 06:43
Last Modified: 13 Dec 2022 09:39
PPN: 502525908
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