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    • 9. 发明授权
    • X-Y stage with rotation
    • US10461620B2
    • 2019-10-29
    • US15479054
    • 2017-04-04
    • Kim Rubin
    • Kim Rubin
    • H02K41/03H02P25/066B23Q1/26
    • An X-Y movable stage with rotation is described. A fixed base comprises a magnetic bed with a checkerboard pattern of alternating north and south poles on a grid. A movable puck moves and rotates on the base. The puck comprises three or more nodes where each node may be energized for a north, south, or off magnetic field, with varying field strength. The nodes are arranged on an X-Y motion grid on the puck that are rotated 45° from the magnetic base grid. A first set of node locations on the puck may be each centered between a pair of opposite poles on the magnetic base. One arrangement of nodes is at the corners of a rectangle aligned with the motion grid. An optional second set of one node locations on the puck may be each centered between a pair of opposite poles on the magnetic base, when the first set of nodes is aligned over poles. Methods of mapping node locations, controllers, and applications are described.