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Article Dans Une Revue Shock and Vibration Année : 2013

Modeling and identification of electromagnetic actuator for the control of rotating machinery

Résumé

The work deals with the design and the assessment of electromagnetic actuators (EMAs) for the control of rotating machines. The system studied has a hybrid bearing that exhibits nonlinear behavior. The system 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. The aim is to develop a strategy in order to define and to identify reliable model necessary for the control. The identification strategy consists in modeling the system with as many as needed sub-models that could be identified separately. For the system studied, two sub-models were necessary. First the EMAs were modeled by using classical equations of electromagnetism and then identified experimentally. Then, a linear model of the shaft mounted on its bearings was defined by using finite element method and was identified successfully. The model of the system was adjusted after assembling the different identified sub-models. The identification is carried out by using a pseudo-random search algorithm (Particle Swarm). The model of the system is then assessed in different configurations. The results obtained demonstrate the effectiveness of the developed strategy.

Dates et versions

hal-00824283 , version 1 (21-05-2013)

Identifiants

Citer

Tobias Morais, Johan Der Hagopian, V. Jr Steffen, Jarir Mahfoud. Modeling and identification of electromagnetic actuator for the control of rotating machinery. Shock and Vibration, 2013, 20 (1), pp.171-179. ⟨10.1155/2013/473072⟩. ⟨hal-00824283⟩
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