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公开(公告)号：US10819183B1
公开(公告)日：2020-10-27
申请号：US16404952
申请日：2019-05-07
摘要： A spherical resolver system includes a spherical body, an outer body, a first sensor coil, a second sensor coil, a third sensor coil, a first primary coil, and a circuit. The spherical body has a first axis of symmetry, a second axis of symmetry, and a third axis of symmetry, and the first, second, and third axes of symmetry are disposed perpendicular to each other. The circuit is coupled to the first primary coil and is operable to supply a first alternating current (AC) reference signal (Vr1) to the first primary coil, whereby a first sensor signal (Vx) is selectively induced in the first sensor coil, second sensor signal (Vy) is selectively induced in the second sensor coil, and a third sensor signal (Vz) is selectively induced in the third sensor coil, and supplies one or more signals representative of the sensor position.
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公开(公告)号：US20200227989A1
公开(公告)日：2020-07-16
申请号：US16721110
申请日：2019-12-19
发明人： Saurabh Agrawal , Deena Dayalan Kothandaraman , Renju Chandrasekhara Panicker , Ramakrishna Rao Pavanje Vishwanatha
摘要： A spherical brushless direct current (BLDC) machine includes a first stator, a second stator, and a spherical rotor. The first stator is symmetrically disposed about a first axis and includes a first multi-pole stator core having a first multi-phase winding wound thereon. The second stator is symmetrically disposed about a second axis and includes a second multi-pole stator core having a second multi-phase winding wound thereon. The second stator core is coupled to the first stator core, and the second axis intersects the first axis. The spherical rotor is disposed adjacent to, and is moveable relative to, the first and second stators. The spherical rotor includes a plurality of magnets that emanate a magnetic field, and each magnet has at least one of its magnetic poles facing the first and second stators.
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公开(公告)号：US11602781B2
公开(公告)日：2023-03-14
申请号：US16721089
申请日：2019-12-19
IPC分类号： B21C47/00 , B21C47/04 , B65H54/44 , B65H54/10 , H01F41/071
摘要： An apparatus for winding coils onto a spherical body includes a frame, a feeder spool, a first hemispherical bobbin, a second hemispherical bobbin, a first spring-loaded pin, a second spring-loaded pin, and a motor arrangement. The feeder spool is rotationally mounted on the frame, has first and second wires wound thereon, and is configured to rotate about a first rotational axis. The first and second hemispherical bobbins are rotationally mounted on the frame and configured to rotate about a second rotational axis that is parallel to the first rotational axis. The bobbins are spaced apart from each other to define a wire-feeder gap through which the first and second wires may be fed. The motor arrangement is coupled to the first and second hemispherical bobbins and is configured to cause the first and second hemispherical bobbins to rotate in opposite directions about the second rotational axis.
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公开(公告)号：US11336162B2
公开(公告)日：2022-05-17
申请号：US16721110
申请日：2019-12-19
发明人： Saurabh Agrawal , Deena Dayalan Kothandaraman , Renju Chandrasekhara Panicker , Ramakrishna Rao Pavanje Vishwanatha
摘要： A spherical brushless direct current (BLDC) machine includes a first stator, a second stator, and a spherical rotor. The first stator is symmetrically disposed about a first axis and includes a first multi-pole stator core having a first multi-phase winding wound thereon. The second stator is symmetrically disposed about a second axis and includes a second multi-pole stator core having a second multi-phase winding wound thereon. The second stator core is coupled to the first stator core, and the second axis intersects the first axis. The spherical rotor is disposed adjacent to, and is moveable relative to, the first and second stators. The spherical rotor includes a plurality of magnets that emanate a magnetic field, and each magnet has at least one of its magnetic poles facing the first and second stators.
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公开(公告)号：US20200222960A1
公开(公告)日：2020-07-16
申请号：US16721089
申请日：2019-12-19
摘要： An apparatus for winding coils onto a spherical body includes a frame, a feeder spool, a first hemispherical bobbin, a second hemispherical bobbin, a first spring-loaded pin, a second spring-loaded pin, and a motor arrangement. The feeder spool is rotationally mounted on the frame, has first and second wires wound thereon, and is configured to rotate about a first rotational axis. The first and second hemispherical bobbins are rotationally mounted on the frame and configured to rotate about a second rotational axis that is parallel to the first rotational axis. The bobbins are spaced apart from each other to define a wire-feeder gap through which the first and second wires may be fed. The motor arrangement is coupled to the first and second hemispherical bobbins and is configured to cause the first and second hemispherical bobbins to rotate in opposite directions about the second rotational axis.
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