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首页> 外文会议>12th international conference on new actuators amp; 6th international exhibition on smart actuators and drive systems >Design Issues of Planar Active Magnetic Bearing Actuators with Low Power Dissipation
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Design Issues of Planar Active Magnetic Bearing Actuators with Low Power Dissipation

机译：低功耗平面有源电磁轴承执行器的设计问题

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Planar active magnetic bearings for multi-coordinate drives often imply several electromagnetic (EM) actuators using reluctance forces to levitate a moveable platform in six degrees of freedom (DOF). In case of high precision demands at vacuum conditions a low power dissipation is required. This paper presents two system structures of multi-coordinate drives with a fully magnetically levitated platform capable to perform planar movement. Further topics focus on design considerations for a single actuator with regard to power dissipation. The static magnetic reluctance force is derived in relation to the ohmic losses of the EM-coil. Two permanent magnet (PM) biased flux path structures are designed for a given point of operation at zero current. They are compared with regard to the force gradients at excitation and air gap variation. The active feedback control system is described as it is the key element to realize low power dissipation in combination with polarised EMs. The reduction of power dissipation by replacing an EM by a polarised EM is shown experimentally.
机译：用于多坐标驱动器的平面主动磁性轴承通常意味着几个电磁（EM）执行器，它们使用磁阻力将可移动平台悬浮在六个自由度（DOF）中。在真空条件下对精度有较高要求的情况下，需要低功耗。本文介绍了多坐标驱动器的两个系统结构，它们具有能够进行平面运动的全磁悬浮平台。进一步的主题集中在单个执行器的功耗方面。相对于EM线圈的欧姆损耗得出静磁阻力。针对在零电流下的给定工作点设计了两个永磁（PM）偏置的磁通路径结构。将它们在激励和气隙变化时的力梯度进行比较。描述了有源反馈控制系统，因为它是结合极化EM实现低功耗的关键要素。实验证明了通过用极化EM代替EM来降低功耗。

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