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本文旨为开发应用于线性压缩机之磁浮型磁驱式线性致动器。磁浮型磁驱式线性致动器主要包含一磁驱式线性致动器与一对混合式磁浮轴承。线性致动器其驱动推杆配有Halbach排列之永久磁铁,可产生周期性磁场并可集中磁通于磁作用区间,可大幅增加所产生之磁力大小。定子磁极由七个方向交替缠绕之线圈所构成,其与驱动推杆所产生之磁通密度作用,可产生弦波式之轴向磁推力以驱动推杆往复运动。此外,于径向磁力方面,本设计具有“离心复位”之特性,当驱动推杆稳定地往复运动时,驱动推杆之周期性磁场会于定子产生一变换电动势,此电动势之磁场在与驱动推杆之周期性磁场相互作用而产生一相斥性磁力,当驱动推杆径向偏移中心位置时,此磁斥力便会产生并自动地将驱动推杆节制至中心位置。另一方面,混合
The purpose of this paper is to develop a maglev linear magnetic actuator for linear compressors. Maglev type magnetic drive linear actuator mainly consists of a magnetic drive linear actuator and a pair of hybrid magnetic bearings. Linear Actuators Driven push-rods are equipped with Halbach-aligned permanent magnets that generate a periodic magnetic field and concentrate the flux in the magnetically active range, dramatically increasing the amount of magnetic force generated. The stator poles are composed of coils alternately wound in seven directions, which act on the magnetic flux density generated by driving the push rod to generate a sine wave axial magnetic thrust to drive the push rod to reciprocate. In addition, the radial magnetic force, the design has a “centrifugal reset ” characteristics, when the driving rod steady reciprocating movement, the driving rod of the periodic magnetic field will produce a stator in the transformation of electromotive force, the emf of the magnetic field in the Which interacts with the periodic magnetic field that drives the push rod to generate a repulsive magnetic force that generates and automatically controls the push rod to the center position when the push rod is radially displaced from the center position. On the other hand, mix