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Journal Articles Smart Structures and Systems Year : 2012

Investigations on the critical speed suppressing by using electromagnetic actuators

Abstract

The possibility of suppressing critical speeds by using electromagnetic actuators (EMAs) is assessed experimentally in this paper. The system studied is composed of a horizontal flexible shaft supported by two ball bearings at one end and one 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 and versions

hal-00824272 , version 1 (21-05-2013)

Identifiers

  • HAL Id : hal-00824272 , version 1

Cite

Jarir Mahfoud, Johan Der Hagopian. Investigations on the critical speed suppressing by using electromagnetic actuators. Smart Structures and Systems, 2012, 9 (4), pp.303-311. ⟨hal-00824272⟩
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