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Communication Dans Un Congrès Année : 2011

Characterization 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 machine. 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 an identification strategy to have a reliable model necessary for the control. The identification strategy consists on modeling the system with linear sub-models and the nonlinear sub-models that could be identified separately. 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
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Dates et versions

hal-00941454 , version 1 (03-02-2014)

Identifiants

  • HAL Id : hal-00941454 , version 1

Citer

Tobias Souza Mourais, Johan Der Hagopian, Valder Steffen Jr, Jarir Mahfoud. Characterization of Electromagnetic Actuator for the Control of Rotating Machinery. XIV International Symposium on Dynamic Problems of Mechanics (DINAME 2011), 2011, Brazil. pp.1-9. ⟨hal-00941454⟩
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