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Analysis of a Novel Magnetization Pattern for 2-DoF Rotary-Linear Actuators

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3 Author(s)
Meessen, K.J. ; Eindhoven Univ. of Technol., Eindhoven, Netherlands ; Paulides, J.J.H. ; Lomonova, E.A.

Direct-drive electromagnetic actuators with multiple degrees of freedom emerge to replace cascaded actuators to improve performance and reliability. An example is the rotary-linear actuator as widely described in literature and used in robotic applications. Checkerboard permanent magnet (PM) arrays are exploited to create a suitable magnetic field distribution. In this paper, a novel PM-array is presented which can be used in combination with classical windings for rotation and translation to realize a cost-efficient actuator. A 2D model is presented and validated to approximate the rotational and translational performance of the actuator.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 11 )