发明名称 |
METHODS AND SYSTEMS FOR CONTROLLABLY MOVING MULTIPLE MOVEABLE STAGES IN A DISPLACEMENT DEVICE |
摘要 |
Aspects of the invention provide methods and systems for moving a plurality of moveable stages relative to a stator. The stator comprises a plurality of coils shaped to provide pluralities of coil trace groups where each coil trace group comprises a corresponding plurality of generally linearly elongated coil traces which extend across a stator tile. Each moveable stage comprises a plurality of magnet arrays. Methods and apparatus are provided for moving the moveable stages relative to the stator, where a magnet array from a first moveable stage and a magnet array from a second moveable stage both overlap a shared group of coil traces. For at least a portion of the time that the magnet arrays from the first and second moveable stages overlap the shared group of coil traces, currents are controllably driven in the shared coil trace group based on the positions of both the first and second moveable stages. The positions of the first and second moveable stages may be ascertained by feedback. |
申请公布号 |
WO2015184553(A1) |
申请公布日期 |
2015.12.10 |
申请号 |
WO2015CA50523 |
申请日期 |
2015.06.05 |
申请人 |
THE UNIVERSITY OF BRITISH COLUMBIA |
发明人 |
LU, XIAODONG |
分类号 |
H02K41/02;B23Q16/00;H02P31/00 |
主分类号 |
H02K41/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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