Magnetically Levitated Planar Actuator with Moving Magnets

Abstract

JThis paper concerns the design, optimization and commutation of a six degree-of-freedom planar actuator with active magnetic bearing. The planar motor has a stationary coils Z array and a translator with a Halbach magnet array. During movements in the xy-plane, the set of energized coils changes with the position of the translator. In this paper a method forI the electromagnetic design of this type of actuator is discussed G and several topologies are compared.

Magnetically Levitated and Guided Systems

“…In this manner, research on contact-free type transportation system and actuator has been actively performed by worldwide researchers. Present day applications of this technology in equipment like magnetic bearings and magnetically levitated vehicles have given renewed impetus to research efforts in the direction of electromagnetic levitation [3][4].…”

Contactless planar actuator with manipulator

“…Therefore, it is necessary to calculate real-time the force and torque per ampere each coil exerts on the platform. A first prototype is developed at Eindhoven University of Technology, without additional system on top of the floating platform [3], [4], which is shown in Figure 2. This prototype was developed to minimize the power dissipation in the coils and force and torque ripples, which results in a coil structure with rectangular coils [2], [3], [4].…”

A Real-Time Computation Model of the Electromagnetic Force and Torque for a Maglev Planar Motor with the Concentric Winding

“…Such constructions inherently have a high moving mass and a limited stiffness, restricting the dynamic performance. In recent years, the 2-D positioning stage has been driven directly by the planar motor [4][5][6], which makes it an integrated structure featuring many advantages, such as direct driving, fast response, high sensitivity, good dynamic nature, and simple structure. Therefore, the traditional method of stacking several one-degree-of-freedom linear drives has been replaced by the planar motor.…”

“…The magnetic scalar potential in the air (regions I in Figure 3) is governed by Laplace's equation and in the permanent magnets by Poisson's equation [4,27].…”