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A Presentation of Control Theory Applied to the Design of Controllable Segmented Gas Foil Bearings

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Advances in Active Bearings in Rotating Machinery (ABROM 2022)

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Abstract

With industry diverging away from the use of oil in the hopes of a more environmentally friendly production, the use of Gas Foil Bearings (GFBs) can facilitate an oil-free alternative for high-speed rotating light machinery. Currently, their application is, however, limited by their low load-bearing capability and low vibration damping. Hybridization has the possibility to mitigate these limitations. The system presented in this paper demonstrates the increased system capabilities through passive and active Hybrid Gas Foil Bearings (HGFB) with radial gas injection. The non-linear differential equations comprising the system, pressure states, foil deflections, rotor movements, and actuator position, are solved simultaneously with and without control feedback. The presented results comprise unbalance response waterfall diagrams.

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Author information

Authors and Affiliations

  1. Department of Civil and Mechanical Engineering, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark

    Janus Walentin Jensen & Ilmar Ferreira Santos

Authors
  1. Janus Walentin Jensen
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  2. Ilmar Ferreira Santos
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Correspondence to Ilmar Ferreira Santos .

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Editors and Affiliations

  1. School of Mechanical Engineering, National Technical University of Athens, Athens, Greece

    Athanasios Chasalevris

  2. Institute of Engineering Mechanics, Karlsruhe Institute of Technology, Karlsruhe, Germany

    Carsten Proppe

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Jensen, J.W., Santos, I.F. (2023). A Presentation of Control Theory Applied to the Design of Controllable Segmented Gas Foil Bearings. In: Chasalevris, A., Proppe, C. (eds) Advances in Active Bearings in Rotating Machinery. ABROM 2022. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-32394-2_3

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