ACTIVE ROTOR CONTROLLER DESIGN FOR VIBRATION AND BEND MITIGATION UTILIZING ACTIVE MAGNETIC BEARINGS AND INTERNAL SHAFT ACTUATION

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

Strategies are required to reduce vibrations in machines that use rotor systems, as these disturbances reduce the life and quality of the machine. A novel low-frequency on-board counter-bend actuator topology has been designed in order to control high frequency vibrations by taking advantage of synchronous forces from the rotating frame of a rotor supported by Active Magnetic Bearings (AMBs). The AMBs ensure in return stable contactfree levitation of the rotor. A complete model of the rotor system is established, based on a finite element representation of the rotor. The feedback control forces of the AMBs are described to account for the non-collocation of the sensor and actuation, and the PD controller gains are chosen using the sensitivity function. The lowest frequency mode of the operating range is located at 2,700 RPM, and time domain analysis shows that the application of symmetric 80 N.m counter-bend moments on the rotor coupling flanges can reduce the vibration amplitude by 88% at this rotation speed.

Original languageEnglish
Title of host publicationStructures and Dynamics - Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
PublisherThe American Society of Mechanical Engineers(ASME)
ISBN (Electronic)9780791886076
DOIs
Publication statusE-pub ahead of print - 28 Oct 2022
EventASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition, GT 2022 - Rotterdam, Netherlands
Duration: 13 Jun 202217 Jun 2022

Publication series

NameProceedings of the ASME Turbo Expo
Volume8-B

Conference

ConferenceASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition, GT 2022
Country/TerritoryNetherlands
CityRotterdam
Period13/06/2217/06/22

ASJC Scopus subject areas

  • Engineering(all)

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