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Étude des différentes structures d'actionneurs de positionnement pour l'aéronautique

Abstract : For certain applications of positioning in embedded systems power or torque needed can be low. Actuators used for these applications can be equipped with stepper machinery such as variable reluctance machines excited (or not) or permanent magnets synchronous machine. In aeronautic these actuators should be as compact as possible and continuity of service is required. Partial or total redundancy of the actuator can ensure the continuity of service. We have studied various structures of machines particularly double channel machines for their compactness such as two channels hybrid variable reluctance machines (2C-HVRM) and double channel permanent magnets synchronous machines (DC-PMSM). In the aim of facilitating or of justifying the choice of one or the other of these structures, we have developed models of able to provide information on measurable (or non measurable) features, and the behavior of the actuators. So from a 2D finite element calculation we have developed several coupled 2D FE permeances network models of a 2C-HVRM tacking account of the magnetic saturation state of this machine and its three-dimensional character. These models were used to simulate the behavior of the actuator in different situations. Always for positioning application with low power and low speed, we sized, modeled and simulated a DC-PMSM close loop controlled. That machine is intrinsically tolerant to phase short-circuit fault, thanks to its high phase resistance
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Éric Duckler Kenmoe Fankem. Étude des différentes structures d'actionneurs de positionnement pour l'aéronautique. Autre. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0172⟩. ⟨tel-01749368⟩



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