Gliding field linear motor
    35.
    发明授权
    Gliding field linear motor 有权
    滑翔场线性马达

    公开(公告)号:US07429808B2

    公开(公告)日:2008-09-30

    申请号:US10550599

    申请日:2004-03-23

    IPC分类号: H02K41/00

    摘要: The invention relates to a three-phase linear synchronous motor with an armature having an axial bore through the middle, into which the optical element—for example an optical lens—can be installed. The armature comprises a sliding sleeve inside which an axially polarized permanent magnet with an unobstructed center bore is located. The armature is guided inside a stationary outer sheath. The armature is displaced by interaction between the permanent magnet and a magnetic field that is moved along the optical axis. The traveling field is generated by at three adjacent stator coils wound around the outer sheath and each having a separate and variable supply of current. The position of the armature is defined by self-holding forces of the permanent magnet in the magnetic field of the coils. The traveling wave magnetic field and hence the armature can be axially displaced with as much precision as desired. The track of the armature can be made as long as desired by changing the number of coils. The system is suitable for miniaturization of optical systems.

    摘要翻译: 本发明涉及一种具有电枢的三相线性同步电动机,该电枢具有贯穿中间的轴向孔,光学元件(例如光学透镜)可以安装在该中心内。 电枢包括滑动套筒,在该滑动套筒内部具有无障碍中心孔的轴向极化永磁体。 衔铁在固定的外护套内引导。 电枢通过永磁体与沿着光轴移动的磁场之间的相互作用而移位。 行星场是通过缠绕在外护套周围的三个相邻的定子线圈产生的,并且每个具有单独且可变的电流供应。 电枢的位置由永磁体在线圈的磁场中的自保持力限定。 行波磁场,因此电枢可以根据需要以精确度轴向移位。 通过改变线圈的数量,可以根据需要制造衔铁的轨道。 该系统适用于光学系统的小型化。