Motor, dual stroke stage and lithographic apparatus

    公开(公告)号:US11112705B2

    公开(公告)日:2021-09-07

    申请号:US16756629

    申请日:2018-09-05

    Abstract: The invention relates to a motor (LD) comprising: a stationary part (STP), comprising: a row of coil assemblies (UCA,LCA), the coil assemblies having multiple phases, a movable part (MP), comprising: a row of permanent magnets (UPM,LPM), wherein the row of coil assemblies has a first length and the row of permanent magnets has a second length, wherein the second length is smaller than the first length, wherein the coil assemblies are arranged to interact with permanent magnets aligned with the coil assemblies to generate a driving force, a comparator to compare a position measurement signal representative for an actual position of the movable part with a set-point signal representative for a desired position of the movable part to provide an error signal; a motion feedback controller configured to provide a control signal on the basis of the error signal; at least one current amplifier configured to provide an actuation signal to the coil assemblies on the basis of the control signal, wherein the motor comprises a feedforward device, wherein the feedforward device is configured to provide a current amplifier feedforward signal on the basis of the set-point signal, or a derivative thereof, wherein the current amplifier feedforward signal is provided to the at least one current amplifier to compensate for unbalanced back electromotive forces on one or more of the coil assemblies due to the one or more coil assemblies being only partly aligned with the permanent magnets.

    Lithographic apparatus and lorentz actuator
    5.
    发明授权
    Lithographic apparatus and lorentz actuator 有权
    光刻设备和洛伦兹致动器

    公开(公告)号:US09293951B2

    公开(公告)日:2016-03-22

    申请号:US13737848

    申请日:2013-01-09

    CPC classification number: H02K1/06 G03F7/70758

    Abstract: A lithographic apparatus includes an actuator for producing a force in a first direction between a first and a second part including a first magnet assembly and a second magnet assembly each attached opposite to each other to the first part of the apparatus, the first magnet assembly including a first main magnet system and a first outer subsidiary magnet system, and the second magnet assembly including a second main magnet system and a second outer subsidiary magnet system, the first and second main magnet system defining a space between them in a second direction perpendicular to the first direction. The actuator includes a coil attached to the second part. The distance between the first outer subsidiary magnet system and the second outer subsidiary magnet system in the second direction is substantially zero.

    Abstract translation: 光刻设备包括用于在包括第一磁体组件和第二磁体组件的第一和第二部分之间沿第一方向产生力的致动器,每个第一磁体组件和第二磁体组件彼此相对地安装到装置的第一部分,第一磁体组件包括 第一主磁体系统和第一外部辅助磁体系统,第二磁体组件包括第二主磁体系统和第二外部辅助磁体系统,第一和第二主磁体系统在垂直于第二主磁体系统的第二方向上在它们之间限定空间 第一个方向。 致动器包括附接到第二部件的线圈。 第一外辅助磁体系统和第二外辅助磁体系统在第二方向上的距离基本为零。

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