MAGNETIC ALIGNMENT SYSTEM AND ALIGNMENT METHOD THEREFOR
First Claim
1. A magnetic alignment system, comprising:
- a magnet array configured to produce a magnetic field;
a motor rotor disposed over the magnet array, wherein;
the motor rotor comprises four coil assemblies arranged in a matrix, and among each two adjacent ones of the four coil assemblies, one is oriented along a first direction and the other is oriented along a second direction perpendicular to the first direction;
a fixed tooling fixed in position with respect to the magnet array; and
a force sensor unit connected between the motor rotor and the fixed tooling, wherein the force sensor unit is configured to, in the event of one of the four coil assemblies being supplied with a three-phase current, measure a force generated by the one of the four coil assemblies under an effect of the magnetic field.
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Accused Products
Abstract
A magnetic alignment system is disclosed, including a magnet array (10), a motor rotor (20), a fixed tooling (30) and a force sensor (40). The motor rotor (20) is disposed over the magnet array (10) and is connected via the force sensor (40) to the fixed tooling (30) that is positionally fixed relative to the magnet array (10). By varying an angle of a three-phase current supplied to a specific one of three-phase coil assemblies in the motor rotor (20) within an angular range for magnetic alignment and measuring a force generated by the specific one of three-phase coil assemblies using the force sensor (40), an angle of magnetic alignment for the specific one of three-phase coil assemblies is determinable based on the angle of three-phase current that causes the specific one of three-phase coil assemblies to generate a maximum force.
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Citations
11 Claims
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1. A magnetic alignment system, comprising:
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a magnet array configured to produce a magnetic field; a motor rotor disposed over the magnet array, wherein;
the motor rotor comprises four coil assemblies arranged in a matrix, and among each two adjacent ones of the four coil assemblies, one is oriented along a first direction and the other is oriented along a second direction perpendicular to the first direction;a fixed tooling fixed in position with respect to the magnet array; and a force sensor unit connected between the motor rotor and the fixed tooling, wherein the force sensor unit is configured to, in the event of one of the four coil assemblies being supplied with a three-phase current, measure a force generated by the one of the four coil assemblies under an effect of the magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A magnetic alignment method, comprising:
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providing a magnet array configured to produce a magnetic field; providing a motor rotor disposed over the magnet array, wherein;
the motor rotor comprises four coil assemblies arranged in a matrix, and among each two adjacent ones of the four coil assemblies, one is oriented along a first direction and the other is oriented along a second direction perpendicular to the first direction;mounting a fixed tooling in a fixed position with respect to the magnet array; and connecting a force sensor unit between the motor rotor and the fixed tooling, and performing an initial magnetic alignment process on each of the four coil assemblies, the initial magnetic alignment process comprising; varying an angle of a three-phase current supplied to one of the four coil assemblies within an angular period for magnetic alignment and measuring a horizontal or vertical force generated by the one of the four coil assemblies using the force sensor unit; and determining an angle of magnetic alignment for the one of the four coil assemblies based on the angle of the three-phase current that causes the one of the four coil assemblies to generate a maximum horizontal or vertical force. - View Dependent Claims (9, 10, 11)
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Specification