High performance linear motor and magnet assembly therefor
AssigneeAnorad Corporation
InventorsNandakumar Thirunarayan, James Smith
Life of this patent
Estimating the term…
Abstract
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.
Claims23
1-11. (canceled)
A method to reduce leakage flux in a back iron, comprising:
- assembling a plurality of magnets to create a magnet assembly, wherein a gap exists between each magnet and the magnets are located along an axis on a common side of the back iron;
- fabricating the back iron such that it is dimensioned and configured to substantially conform to magnetic flux that travels through the back iron when the magnet assembly is exposed to a magnetic field;
- integrating the magnet assembly with a linear motor stage in a linear motor.
(canceled)
A system that facilitates reducing leakage flux in a back iron, comprising:
- a plurality of magnets assembled with a gap between each pair of magnets and along an axis on a common side of the back iron;
- the back iron is dimensioned and configured to substantially conform to magnetic flux that travels through the back iron when the plurality of magnets is exposed to a magnetic field
A motor magnet assembly, comprising:
- means for generating magnetic fields that travel in opposite directions at spaced apart locations between spaced apart ends of the means for generating magnetic fields;
- and
- means for supporting the means for generating magnetic fields at a desired orientation and for providing a path through which magnetic flux from the means for generating magnetic fields can travel, the means for supporting is dimensioned and configured to substantially conform to the magnet flux from the means for generating magnetic fields.
Dependencies are inferred from the claim text.