TU Darmstadt / ULB / TUbiblio

Adapting the control of the magnetic bearings of a highly flexible and gyroscopic rotor to the excitations by the motor

Franz, Daniel ; Schüßler, Benedikt ; Rinderknecht, Stephan (2023)
Adapting the control of the magnetic bearings of a highly flexible and gyroscopic rotor to the excitations by the motor.
In: Applied and Computational Mechanics, 17 (2)
doi: 10.24132/acm.2023.833
Article, Bibliographie

Abstract

A test rig was built to perform fatigue tests on thick-walled cylinders made of fibre reinforced plastic (FRP). During the fatigue test, the rotational speed of an FRP cylinder is periodically varied until it fails. The FRP cylinder is connected to a drive spindle that accelerates and decelerates it using a permanent magnet synchronous machine (PMSM). To avoid excessive wear, the rotor is supported by active magnetic bearings (AMB). After the fatigue test was finished with the first cylinder, a new cylinder was attached to the test stand. With this new specimen, previously uncritical radial vibrations became more severe. For high accelerations, these vibrations led to instability of the rotor. However, high accelerations are desirable to perform the fatigue tests in the shortest possible time. Hence, the AMB control should be made insensitive to these vibrations. Since the vibrations depend on the acceleration of the rotor, it is reasonable to assume that they are induced by the PMSM. To reduce the vibrations, these excitations from the PMSM are included in the model-based controller parametrization process for the radial AMB, in which the parameters are adjusted via optimization. With the adjusted control, the amplitude of the vibration was significantly reduced and higher accelerations were possible. The described parameter tuning process can easily be adapted to different AMB systems with disturbances and changes in the system.

Item Type: Article
Erschienen: 2023
Creators: Franz, Daniel ; Schüßler, Benedikt ; Rinderknecht, Stephan
Type of entry: Bibliographie
Title: Adapting the control of the magnetic bearings of a highly flexible and gyroscopic rotor to the excitations by the motor
Language: English
Date: 2023
Publisher: University of West Bohemia, Pilsen
Journal or Publication Title: Applied and Computational Mechanics
Volume of the journal: 17
Issue Number: 2
DOI: 10.24132/acm.2023.833
URL / URN: https://acm.kme.zcu.cz/acm/article/view/833
Abstract:

A test rig was built to perform fatigue tests on thick-walled cylinders made of fibre reinforced plastic (FRP). During the fatigue test, the rotational speed of an FRP cylinder is periodically varied until it fails. The FRP cylinder is connected to a drive spindle that accelerates and decelerates it using a permanent magnet synchronous machine (PMSM). To avoid excessive wear, the rotor is supported by active magnetic bearings (AMB). After the fatigue test was finished with the first cylinder, a new cylinder was attached to the test stand. With this new specimen, previously uncritical radial vibrations became more severe. For high accelerations, these vibrations led to instability of the rotor. However, high accelerations are desirable to perform the fatigue tests in the shortest possible time. Hence, the AMB control should be made insensitive to these vibrations. Since the vibrations depend on the acceleration of the rotor, it is reasonable to assume that they are induced by the PMSM. To reduce the vibrations, these excitations from the PMSM are included in the model-based controller parametrization process for the radial AMB, in which the parameters are adjusted via optimization. With the adjusted control, the amplitude of the vibration was significantly reduced and higher accelerations were possible. The described parameter tuning process can easily be adapted to different AMB systems with disturbances and changes in the system.

Uncontrolled Keywords: active magnetic bearings, robust control, rotor dynamics, predefined controller structure
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Mechatronic Systems in Mechanical Engineering (IMS)
Date Deposited: 09 Jan 2024 09:07
Last Modified: 09 Jan 2024 09:11
PPN: 514530936
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details