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Communication Dans Un Congrès Année : 2011

Rotating Machine Critical Speed Suppressing by Using Electromagnetic Actuators

Résumé

The possibility of suppressing critical speeds by using electromagnetic actuators (EMAs) is assessed numerically and experimentally in this paper. The system studied is composed of a horizontal flexible shaft supported by two ball bearings at one end and a roller bearing that is located in a squirrel cage at the other end. Four identical EMAs supplied with constant current are utilized. The EMAs associated to the squirrel cage constitutes the hybrid bearing. Results obtained, show that the constant current, when applied to the EMAs, produces a shift of the first critical speed toward lower values. Moreover, the application of constant current for a speed interval around the critical speed enables a smooth run-up or run-down without crossing any resonance
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Dates et versions

hal-00941456 , version 1 (03-02-2014)

Identifiants

  • HAL Id : hal-00941456 , version 1

Citer

Johan Der Hagopian, Jarir Mahfoud. Rotating Machine Critical Speed Suppressing by Using Electromagnetic Actuators. ASME TURBO EXPO (IGTI 2011), 2011, Canada. pp.1-6. ⟨hal-00941456⟩
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