Abstract: A passive haptic interface includes a first element which is rotatably movable about an axis or translatably movable along an axis, the first movable element rotating or moving opposite a second fixed element. The first movable element has a first plurality of magnetic poles spaced periodically at a pole pitch Ps and in the direction of movement, and the second fixed element has a second plurality of magnetic poles periodically spaced at a pole pitch Pr and in the direction of movement, where Ps and Pr are different numbers. A periodic stress is created by the magnetic interaction between the first movable element and the second fixed element in a period Pt. The pole pitches Ps and Pr are chosen such that Pt is strictly less than the smallest of the pitches Ps and Pr.

Abstract: The method provides for the manufacturing a sensor bearing unit including a bearing having a first ring and a second ring capable of rotating concentrically relative to one another, and an impulse ring provided with a target holder secured to the first ring and with a magnetic target mounted on the target holder. The method further includes securing the target holder to the first ring, and magnetizing the magnetic material of the magnetic target after the step of securing the target holder to the first ring.

Abstract: A switched reluctance motor for an electric vehicle. The switched reluctance motor includes an inverter with switchable windings to control the inductance of the motor. The motor also includes a high speed and low speed mode corresponding to the inductance of the motor. The inverter may include parallel switches, selectively running current to the windings in order to control the inductance.

Abstract: A step motor comprises both a rotor and a stator winding assembly. The rotor has a plurality Nr of rotor teeth. The rotor fits within the stator winding assembly and is seated by bearings on an axial shaft to rotate within the stator winding assembly. The stator winding assembly includes a stator with a plurality of stator poles and is wound with coils that can be driven in a series of phases to magnetically interact with the rotor. Each stator pole has a plurality of stator teeth. The total number Ns of stator teeth on all poles of the stator is equal to or greater than the number of rotor teeth (Ns?Nr) to deliver more torque. Various embodiments of two-phase, three-phase and five-phase bipolar step motors having 8, 9 and 10 stator poles, respectively, and different numbers of teeth are provided, including two embodiments with nonuniform stators.

Abstract: An electric machine for a motor vehicle, includes a rotor, and a stator. The stator has a coil device for generating a magnetic rotary field for driving the rotor. the coil device has a soft magnetic flux-guiding device for guiding the rotary field, wherein the coil device is only partially arranged in the flux-guiding device, wherein at least one winding overhang of the coil device extends out of the flux guiding device into an environment of the stator. The electric also includes and an electrically conductive shielding element arranged on the at least one winding overhang and configured to electrically and/or electromagnetically shield the winding overhang against an environment, wherein the shielding element is connected to a frame potential connection of the electric machine.

Abstract: A rotor includes a first rotor core, a second rotor core, a field magnet, and a back magnet. The first rotor core includes a disk-shaped first core base and a plurality of first claw-poles. The second rotor core includes a disk-shaped second core base and a plurality of second claw-poles. The field magnet has the first claw-poles function as first magnetic poles and the second claw-poles function as second magnetic poles. The back magnet is arranged along back surfaces of the first and second claw-poles. The back magnet is magnetized such that radially outer sections have the polarities that are the same as the first and second magnetic poles. The back magnet is formed integrally, has an annular shape, and is in contact with all of the back surfaces of the first and second claw-poles.

Abstract: A rotor and a rotary electric machine containing the rotor are provided. The rotor includes a shaft, a rotor core coaxially connected to the shaft, a first axial magnetic steel and a second axial magnetic steel disposed at an end surface of the rotor core, a rotor bushing, and a first magnetic isolation groove. The first axial magnetic steel has a first magnetic pole facing the rotor core. The second axial magnetic steel has a second magnetic pole facing the rotor core. The rotor bushing is disposed at a side of the first and second axial magnetic steels opposite to the rotor core. The first magnetic isolation groove is formed in the rotor core along a radius direction of the rotor core. The first magnetic isolation groove is disposed between the first axial magnetic steel and the second axial magnetic steel to isolate the first pole and the second pole.

Abstract: A rotor and a rotary electric machine containing the rotor are provided. The rotor includes a shaft, a rotor core coaxially connected to the shaft, a first axial magnetic steel and a second axial magnetic steel disposed at an end surface of the rotor core, a rotor bushing, and a first magnetic isolation groove. The first axial magnetic steel has a first magnetic pole facing the rotor core. The second axial magnetic steel has a second magnetic pole facing the rotor core. The rotor bushing is disposed at a side of the first and second axial magnetic steels opposite to the rotor core. The first magnetic isolation groove is formed in the rotor core along a radius direction of the rotor core. The first magnetic isolation groove is disposed between the first axial magnetic steel and the second axial magnetic steel to isolate the first pole and the second pole.

Abstract: An apparatus is provided having a cylindrical stator and a rotor that is spaced from a stator to define an annular primary air gap that receives AC flux from the stator. The rotor has a plurality of longitudinal pole portions disposed parallel to the axis of rotation and alternating in polarity around a circumference of the rotor. Each longitudinal pole portion includes portions of permanent magnet (PM) material and at least one of the longitudinal pole portions has a first end and an opposing second end and a side magnet is disposed adjacent the first end and a side pole is disposed adjacent the second end.

Abstract: There is provided an axial gap motor including a rotor rotatable around a rotation axis; and a first stator and a second stator arranged to face each other with the rotor therebetween from both sides of the rotor in the rotation axis direction of the rotor, wherein the rotor includes a plurality of main permanent magnets having magnetizing directions in the rotation axis direction of the rotor and arranged in a peripheral direction of the rotor; a partition member arranged between the main permanent magnets which are adjacent to each other in the peripheral direction of the rotor, the partition member including a nonmagnetic material; and auxiliary permanent magnets having a magnetizing direction that is orthogonal both to the rotation axis direction of the rotor and a radial direction of the rotor, and arranged on both sides of the partition member in the rotation axis direction of the rotor.

Abstract: The rotor 11 of an axial gap type motor 10 is provided with a plurality of main magnets 41 respectively magnetized in an axial direction of a rotational axis and disposed at predetermined intervals in a peripheral direction, a plurality of yokes 42 structured by a laminated member 71 produced by winding a tape-shaped electromagnetic steel plate 60 and respectively disposed on both sides of the main magnets 41 in the axial direction, and a rotor frame 30 made of a die-cast alloy and including a plurality of ribs 31 respectively interposed between the main magnets 41 adjoining each other in the peripheral direction and extending in the radial direction, and an inner cylindrical portion 32 and an outer cylindrical portion 33 respectively formed on the radially inner side of the ribs 31 and on the radially outer side of the ribs 31.

Abstract: The invention concerns a rotary single-phase electromagnetic servo actuator consisting of a rotary actuator designed to move a mobile member along a limited travel, including a 2N pole stator structure, N being equal to 1 or 2, and at least one field coil, said stator structure being made of a material with high magnetic permeability, and a rotor having a ferromagnetic yoke and a thin magnetized portion consisting of 2N pairs of axially magnetized poles, in alternate directions and a rotor angular position sensor. The invention is characterized in that the position sensor has a magnetic field emitter integral with the yoke and a receiver for the magnetic field stationary relative to the stator structure.

Abstract: The magnetic bearing device contains soft-magnetic rotor disc elements, which radially engage inside one another, and soft-magnetic stator disc elements. These elements are, on their sides facing one another, provided with annular tooth-like projections that are opposite one another on either side of an air gap. In addition, magnetic field generators for generating a magnetic flux oriented in an axial direction between the disc elements are assigned to the rotor disc elements or to the stator disc elements.

Abstract: The present axial gap motor is provided with: a rotor that is rotatable around a rotation axis; and a pair of stators that are opposed to each other with the rotor interposed therebetween from both sides in a rotation axis direction which is parallel with the rotation axis of the rotor. The rotor includes: a plurality of main magnets arranged in a circumferential direction so that a flux direction is parallel with the rotation axis direction; a sub permanent magnet which is disposed in the vicinity of a circumferential end portion of the main magnet and is magnetized in a direction perpendicular to the rotation axis direction and a radial direction; and a magnetic member which is provided on a surface of at least one of the one side and the other side in the rotation axis direction of the main magnet. A length of the magnetic member in the rotation axis direction is larger than a length of the sub permanent magnet in the rotation axis direction.

Abstract: An axial gap motor includes a rotor and a stator, and the rotor includes within a rotor frame a plurality of main magnet pieces which are disposed in a circumferential direction in such a manner that their magnetized direction is in a rotational axis direction and magnetic members which are disposed on surfaces of at least one sides in the rotational axis direction of the main magnet pieces. The magnetic member has a fitting portion on one end face in a radial direction of the rotor thereof which is adapted to fit in the rotor frame.

Abstract: The invention relates to a generator, to a magnetic flux conducting unit for a generator, and to a power generation machine comprising such a generator. In an embodiment of the invention, a generator is disclosed which comprises at least one coil assembly and at least one magnetic flux conducting unit. The magnetic flux conducting unit comprises at least one magnet, a pair of opposed magnetic flux conducting elements defining a space therebetween for receiving the coil assembly, and at least one connection portion extending between the opposed magnetic flux conducting elements. The at least is arranged relative to the opposed magnetic flux conducting elements such that the magnetic attraction forces between the elements are redacted through and balances with the connection portion.

Abstract: A magnetic field element includes magnetic field portions and a coupling portion and is rotatable on a rotation axis along a given direction. Each magnetic field portion includes a magnet and magnetic plates. The magnet includes first and second pole faces having different polarities from each other in the given direction. The magnetic-material plates are provided on the first and second pole faces. The magnetic field portions are annularly arranged along a circumferential direction around the rotation axis and spaced in the circumferential direction from one another. The coupling portion is made of a non-magnetic material and couples the magnetic field portions to one another.

Abstract: A rotor includes a rotor frame having a plurality of ribs which are disposed at predetermined intervals in a circumferential direction and which extend in a radial direction, and a shaft portion and a rim portion which are provided at inside diameter sides and outside diameter sides of the plurality of ribs, respectively, main magnet portions which are disposed individually between the ribs which are adjacent to each other in the circumferential direction, and a plurality of sub-magnet portions which are disposed on at least one sides of the ribs in the rotational axis direction, and wherein a rigid portion is formed in an area where the sub-magnet portions are projected in the radial direction relative to an area where the rib is projected in the radial direction in a cross section of the rim portion taken along the rotational axis direction.

Abstract: The invention relates to a generator, to a magnetic flux conducting unit for a generator, and to a power generation machine comprising such a generator. In an embodiment of the invention, a generator is disclosed which comprises at least one coil assembly and at least one magnetic flux conducting unit. The magnetic flux conducting unit comprises at least one magnet, a pair of opposed magnetic flux conducting elements defining a space therebetween for receiving the coil assembly, and at least one connection portion extending between the opposed magnetic flux conducting elements. The at least is arranged relative to the opposed magnetic flux conducting elements such that the magnetic attraction forces between the elements are redacted through and balances with the connection portion.

Abstract: Provided is a vibration generating stepping motor, which is ensured for holding a stop position by increasing a detent torque. The pole teeth of one stator yoke of a single-phase stator yoke assembly includes two kinds of pole teeth made different in the outermost side faces in the radial direction, and the pole teeth of the other stator yoke are comprised of two kinds of pole teeth made different in the outermost side faces in the radial direction. The pole teeth of one kind of the aforementioned individual stator yokes are made to have the same shape. The pole teeth of the remaining two kinds not given the same shape are combined and arranged to increase the detent torque.

Abstract: A multi-polar rotary machine comprises a cylindrical outer rotor arranged concentrically with the stator and with an air gap therebetween. The stator has two spaced stator elements and a ring shaped permanent magnet held between the stator elements and magnetized so as to form N and S poles in the axial direction of the stator. Small axially separated stator teeth A and ? and B and B are formed on the outer peripheral surface of the spaced stator elements. Stator windings for A phase and B phase are wound around the respective stator elements. The small stator teeth A, ?, B and B are circumferentially shifted from corresponding small rotor teeth by a ¼ pitch of the small stator teeth, respectively. Each of the stator and rotor is formed of pressed powder comprising a soft magnetic material at least one of a resin and an inorganic material.

Abstract: A hybrid step motor has axially spaced first and second sets of rotor sections (or alternatively different sets of stator sections) characterized by different tooth widths. The rotor/stator tooth width ratio in one set is optimized for one-phase ON operation while the rotor/stator tooth width ratio for the other set is optimized for two-phase ON operation. More generally, the two sets are optimized together for near sinusoidal, torque profile and substantially equal microsteps.

Abstract: A multi-polar rotary machine comprises a and a cylindrical outer rotor arranged concentrically with the stator and with an air gap therebetween. The stator has two splitted stator elements and a ring shaped permanent magnet held between the stator elements and magnetized so as to form N and S poles in the axial direction of the stator. Small axially separated stator teeth A and ? and B and B are formed on the outer peripheral surface of the splitted stator elements. Stator windings for A phase and B phase are wound around the respective stator elements. The small stator teeth A, ?, B and B are circumferentially shifted from corresponding small rotor teeth by a ¼ pitch of the small stator teeth, respectively. Each of the stator and rotor is formed of pressed powder consisting of soft magnetic material, and of resin and/or inorganic material.

Abstract: A permanent magnet type three-phase stepping motor that is simple in construction, with reduced vibration, a reduced unbalanced force in the radial direction, and high torque that can be manufactured at a low cost.

Abstract: The invention refers to magnetoelectric machines and comprises a rotor made in the form of at least two disks, the magnetized disks have circumferential arrayed like poles and an axially magnetized polygon or cylindrical magnet placed between the disks. The stator comprises a winding selected from the group consisting of a coil winding and a wave winding coils that are distributed over the circumference and are installed predominantly in the space between the rotor poles provides for the possibility of the end face interaction with the rotor poles. Each of at least two disks could be made of a non-ferrous material with embedded magnets, and rotor further comprises ferrous metal plates, each of the plates is attached on an outer surface of each disk and comprises a ferrous metal cylinder for interconnecting a magnetic flux between ferrous metal plates. The rotor could be made as a multi-sectional unit. The disks could be made integral with a magnet in such a manner that they serve as magnet's poles.

Abstract: A permanent magnet type three-phase stepping motor that is simple in construction, with vibration, a reduced unbalance force in the radial direction, and high torque that can be manufactured at a low cost is disclosed. The permanent magnet type three-phase stepping motor has a stator having 3L pieces of stator pole and a rotor having a permanent magnet magnetized so as to form a plurality (Nr) of N and S pole pairs, wherein a condition of 0.3?{(Nr/?) (Ws+Wr)/(Ds+Dr)}?0.5 is established, where L is an integer not less than 1, Nr is L (3n±1), n is an integer not less than 1, Da is an inner diameter of the stator, Dr is an outer diameter of the rotor, Ws is a width of the stator pole tooth, and Wr is a width of the rotor tooth.

Abstract: In a unipolar transverse flux machine, in particular a motor, having a rotor, which is comprised of two coaxial, ferromagnetic, toothed rotor rings, and a permanent magnet ring, which is magnetized in an axially unipolar fashion and is clamped axially between these rotor rings, and having a stator, which is concentric to the rotor shaft and has U-shaped stator yokes that represent the magnet poles, yoke elements, and a stator winding, in order to achieve an extremely flat design and to assure a definite start in a particular direction, the stator winding is embodied with two coils, whose one coil side extends respectively over a group of stator yokes and yoke elements arranged in succession in the circumference direction, along the side of the yoke elements remote from the rotor shaft, between the yoke legs, where the group spanned by the coil side of the one coil is disposed spatially offset on the stator circumference and electrically offset by 90° in relation to the group spanned by the coil side of the ot

Abstract: In order to construct a brushless electric motor comprising a housing, comprising a rotor and comprising a stator, each stator unit including pole shoes, formed as claw poles, as well as a coil positioned following the rotor in the direction of the rotor axis, by means of which the pole shoes can be magnetized, at the lowest possible cost and as simply as possible, it is proposed that the stator unit has two pole shoe elements of which a first pole shoe element has a first pole shoe carrier as well as first pole shoes formed integrally onto this carrier and of which a second pole shoe element has a second pole shoe carrier as well as the second pole shoes formed integrally onto this carrier and that a bearing support made of plastics is molded onto the second pole shoe carrier of the stator unit and is thereby secured to it.

Abstract: The invention refers to magnetoelectric machines. It can be used when manufacturing different-purpose electric drives—for instance, in fans, compressors, electromobile's wheels, and so forth. It comprises a rotor made in the form of two disks, the teeth of which on the outer or inner circumference make up rotor poles and an axially magnetized cylindrical magnet (placed between said disks). The stator (made in the form of coils that are distributed over the circumference and that are installed predominantly in the space between the rotor poles) provides for the possibility of the end face interaction with the rotor poles. The rotor could be made as a multi-sectional unit. In this case said disks have the plate-like shape, owing to which fact the poles of one disk are located between the poles of another disk in one plane, while the magnets of adjacent section are oriented towards one another with like poles.

Abstract: To obtain the magnetic flux increase of the air gap, a radial slit for inserting a magnet is provided in a respective pole iron core, and the length of the magnet is adjusted to a radial direction and to an axial direction. In particular, when it is desired to strengthen the magnetic flux, a strong magnetic flux magnet and a magnet which is inserted fully into the slit are used. Further, forming an attachment and detachment structure, it is possible to carry out easily the alternation and the adjustment of the characteristics of a magnet type electric motor and a generator.