Rotating electric machine having a toroidal wound motor winding

Claim 2

A rotating electric machine comprising, in combination: a metallic housing having a pair of apertures; a toroidal winding assembly coaxially mounted within said housing, said toroidal winding assembly having a cylindrical shaped ring, and first, second, third, and fourth coils, each coil of which is wound in a toroidal helix configuration around said cylindrical shaped ring, and each coil of which has first and second terminals with the second terminal of said first coil connected to the first terminal of said third coil, and the second terminal of said second coil connected to the first terminal of said fourth coil; a rotor coaxially rotatable within said toroidal winding assembly and having on the periphery thereof a magnetic assembly, said magnetic assembly having alternately a plurality of north pole magnets and a plurality of south pole magnets generating a magnetic field having a predetermined magnetic flux density, said rotor having a nonmagnetized gap between each alternate north pole and south pole magnet and defining a gap between said rotor and said toroidal winding assembly; first detecting means, mounted upon said housing and having an output, for sensing the flux density of the magnetic field generated by said magnetic assembly and for providing a first analog signal proportional to the flux density of the magnetic field sensed thereby; second detecting means having an output, mounted upon said housing, and positioned upon said housing such that when said first detecting means is positioned adjacent one of said nonmagnetic gaps, said second detecting means will be positioned at the center of the adjacent north or south pole of said magnetic assembly, said second detecting means for sensing the flux density of the magnetic field generated by said magnetic assembly, and for providing a second analog signal proportional to the flux density of the magnetic field sensed thereby; and circuit means having a first terminal connected to the output of said first detecting means, a second terminal connected to the output of said second detecting means, a third terminal connected to the first terminal of said first coil, a fourth terminal connected to the first terminal of said second coil, and a ground terminal connected to the second terminal of said third coil and the second terminal of said fourth coil providing a first winding excitation signal in response to said first analog signal, and a second winding excitation signal in response to said second analog signal, said first winding excitation signal to effect the excitation of the first and third coils of said toroidal winding assembly, and said second winding excitation signal to effect the excitation of the second and fourth coils of said toroidal winding assembly so as to cause the rotation of said rotor in a predetermined direction at a constant speed.

Claim 3

The rotating electric machine of claim 1, wherein said plurality of north pole magnets and said plurality of south pole magnets comprise eight north pole permanent magnets and eight south pole permanent magnets.

Claim 4

The rotating electric machine of claim 1, wherein said plurality of north pole magnets and said plurality of south pole magnets define sixteen nonmagnetic gaps.

Claim 5

The rotating electric machine of claim 1, wherein said first and second detecting means each comprise a hall effect sensor.

Claim 6

The rotating electric machine of claim 1, wherein said circuit means comprises: a first signal multiplier having a first input connected to the output of said first detecting means, a second input, and an output; a second signal multiplier having a first input connected to the output of said second detecting means, a second input, and an output; a direct current voltage source having an output connected to the second input of said first signal multiplier and the second input of said second signal multiplier; a first amplifier having an input connected to the output of said first signal multiplier and an output connected to the first terminal of said first coil; a second amplifier having an input connected to the output of said second signal multiplier, and an output connected to the first terminal of said second coil; and a ground connected to the second terminal of said third coil and the second terminal of said fourth coil.

Claim 7

The rotating electric machine of claim 1, in which said rotor includes at the center thereof a shaft, one end of which passes through the first of the pair of apertures of said metallic housing, and the opposite end of which passes through the second of said pair of apertures of said metallic housing.

Claim 8

An electric motor comprising, in combination: a metallic housing having a pair of apertures; a toroidal winding assembly coaxially mounted within said housing, said toroidal winding assembly having a cylindrical shaped ring and first, second, third, and fourth coils, each coil of which is wound in a toroidal helix configuration around said cylindrical shaped ring, and each coil of which has first and second terminals with the second terminal of said first coil connected to the first terminal of said third coil, and the second terminal of said second coil connected to the first terminal of said fourth coil; a ground effectively connected to the second terminal of said third coil and the second terminal of said fourth coil; a rotor coaxially rotatable within said toroidal winding assembly, and having on the periphery thereof a magnetic assembly, said magnetic assembly having alternately eight north pole permanent magnets, and eight south pole permanent magnets generating a magnetic field having a predetermined magnetic flux density, said magnet assembly defining sixteen nonmagnetic gaps, each nonmagnetic gap of which is located within said rotor between one of the north pole permanent magnets, and one of the south pole permanent magnets of said magnetic assembly, said rotor and said toroidal winding assembly defining a gap therebetween; a first hall effect sensor mounted upon said housing and having an output for sensing the flux density of the magnetic field generated by said magnetic assembly, and for providing a first analog signal proportional to the flux density of the magnetic field sensed thereby; a second hall effect sensor having an output, mounted upon said housing, and positioned upon said housing such that when said first hall effect sensor is positioned adjacent one of said nonmagnetic gaps, said second hall effect sensor will be positioned at the center of the adjacent north or south pole permanent magnet of said magnetic assembly, said second hall effect sensor for sensing the flux density of the magnetic field generated by said magnetic assembly, and for providing a second analog signal proportional to the flux density of the magnetic field generated by said magnetic assembly; a direct current voltage source having an output for producing a direct current voltage signal; and a multiplier circuit having a first input connected to the output of said first hall effect sensor, a second input connected to the output of said second hall effect sensor, a third input connected to the output of said direct current voltage source, a first output connected to the first terminal of said first coil, and a second output connected to the first terminal of said second coil for multiplying said first analog signal by said direct current voltage signal so as to provide a first winding excitation signal, and for multiplying said second analog signal by said direct current voltage signal so as to provide a second winding excitation signal, said first winding excitation signal to effect the excitation of the first and third coils of said toroidal winding assembly, and said second winding excitation signal to effect the excitation of the second and fourth coils of said toroidal winding assembly so as to cause the rotation of said rotor in a predetermined direction at a constant speed.

Claim 9

An electric motor comprising, in combination: a metallic housing having a pair of apertures; a toroidal winding assembly coaxially mounted within said housing, said toroidal winding assembly having a cylindrical shaped ring and first, second, third, and fourth coils, each coil of which is wound in a toroidal helix configuration around said cylindrical shaped ring, and each coil of which has first and second terminals with the second terminal of said first coil connected to the first terminal of said third coil, and the second terminal of said second coil connected to the first terminal of said fourth coil; a ground effectively connected to the second terminal of said third coil and the second terminal of said fourth coil; a rotor coaxially rotatable within said toroidal winding assembly, and having on the periphery thereof a magnetic assembly, said magnetic assembly having alternately eight north pole permanent magnets, and eight south pole permanent magnets generating a magnetic field having a predetermined magnetic flux density, said magnet assembly defining sixteen nonmagnetic gaps, each nonmagnetic gap of which is located within said rotor between one of the north pole permanent magnets, and one of the south pole permanent magnets of said magnetic assembly, said rotor and said toroidal winding assembly defining a gap therebetween; a first hall effect sensor mounted upon said housing and having an output for sensing the flux density of the magnetic field generated by said magnetic assembly, and for providing a first analog signal proportional to the flux density of the magnetic field sensed thereby; a second hall effect sensor having an output, mounted upon said housing, and positioned upon said housing such that when said first hall effect sensor is positioned adjacent one of said nonmagnetic gaps, said second hall effect sensor will be positioned at the center of the adjacent north or south pole permanent magnet of said magnetic assembly, said second hall effect sensor for sensing the flux density of the magnetic field generated by said magnetic assembly, and for providing a second analog signal proportional to the flux density of the magnetic field generated by said magnetic assembly; a direct current voltage source having an output for producing a direct current voltage signal; and a multiplier circuit having a first input connected to the output of said first hall effect sensor, a second input connected to the output of said second hall effect sensor, a third input connected to the output of said direct current voltage source, a first output connected to the first terminal of said first coil, and a second output connected to the first terminal of said second coil for multiplying said first analog signal by said direct current voltage signal so as to provide a first winding excitation signal, and for multiplying said second analog signal by said direct current voltage signal so as to provide a second winding excitation signal, said first winding excitation signal to effect the excitation of the first and third coils of said toroidal winding assembly, and said second winding excitation signal to effect the excitation of the second and fourth coils of said toroidal winding assembly so as to cause the rotation of said rotor in a predetermined direction at a constant speed.

Claim 10

The electric motor of claim 7, wherein said multiplier circuit comprises: a first signal multiplier having a first input connected to the output of said first hall effect sensor, and a second input connected to the output of said direct current voltage source; and a second signal multiplier having a first input connected to the output of said second hall effect sensor, and a second input connected to the output of said direct current voltage source.

Claim 11

The electric motor of claim 7, in which said rotor includes at the center thereof a shaft, one end of which passes through the first of the pair of apertures of said metallic housing, and the opposite end of which passes through the second of said pair of apertures of said metallic housing.

Claim 12

The electric motor of claim 7, further characterized by: a first amplifier connected between the first output of said multiplying circuit and the first terminal of said first coil; and a second amplifier connected between the second output of said multiplying circuit and the first terminal of said second coil.