Abstract: This invention relates to a positioning system for positioning a positioning unit along a longitudinal axis. The positioning system comprises a linear guide arrangement for enabling a linearly guided motion parallel to said axis, wherein the positioning unit is operatively connected to said guide arrangement. Furthermore, the positioning system comprises a motor, wherein the motor comprises a moving motor member operatively connected to said linear guide arrangement and an elongated stationary motor member extending parallel to said axis. The moving motor member is adapted to move along the stationary motor member for providing motion parallel to said axis. Moreover, the positioning system further comprises a force transmission arrangement which operatively connects said moving motor member to the positioning unit. The force transmission arrangement is arranged to provide an engagement between said positioning unit and said moving motor.

Abstract: A motor rotor includes an annular body and a plurality of magnetic bodies installed on an inner lateral surface of the annular body in an irregular manner, to prevent a rotating motor from generating a cogging effect, disperse the frequency of the cogging torque, and reduce the amplitude. Accordingly, noises generated while the motor is operating are reduced, the periodicity of a cogging torque is changed, and cogging torque is reduced.

Abstract: An electrical connector/cable harness includes an electrically insulative housing and first and second passageways extending from a first end of the connector/cable harness to a second end thereof, first and second electrically conductive wires disposed in the passageways, respectively, wherein the passageways and the wires therein reverse their dispositions in the connector/cable harness such that at the second end of the connector/cable harness the two wires are disposed oppositely to their disposition at the first end of the connector/cable harness.

Abstract: A rotating electrical machine includes a stator including at least two element coils of the same phase each having a plurality of turns and connected to each other through a coil-to-coil connection wire, the element coils being arranged in adjacent slots, respectively; and a rotor rotatably provided to the stator through a gap. The element coils of the same phase are fitted in the adjacent slots so that wound around portions of the element coils partially overlap each other. The coil-to-coil connection wire connects at a coil end portion conductor wires extending from linear conductor wire portions of innermost wires of the element coils contained in the slots.

Abstract: The invention relates to a DC motor, particularly for a fan device of a motor vehicle, having a stator and a metal grounding plate arranged on the stator, for receiving at least one leadthrough capacitor of an interference suppressor device. The capacitor being arranged in a connection line of the motor. According to the invention, the leadthrough capacitor includes a metal housing with at least one contact section for contacting the stator and/or the metal grounding plate. Thus, a compact interference suppressor device, which can be produced in a cost-effective way and is easy to install, is achieved.

Abstract: A system for a wind energy installation. The wind energy installation feeds electrical power into a power supply system. A phase control device can include a power supply system fault detector, a phase angle detector, and a signal processing module. When a power supply system fault is detected, a phase error signal can be determined. A preset angle signal can be determined based on the phase error signal. The preset angle signal can be provided to a converter which can emit electrical power having a phase angle corresponding to the preset angle signal into the power supply system. Accordingly, an undesirable sudden surge in power output resulting from a phase change occurring at the end of the power supply system disturbance can be avoided.

Abstract: A manufacturing method of a rotating electric machine includes the steps of: preparing a plurality of split stator cores annularly arranged at intervals in a circumferential direction so that their inner end portions are aligned with an imaginary circle and a support member positioned inside the imaginary circle in a radial direction to support the inner end portions of split stator cores; mounting a fastening member on outer peripheries of split stator cores to press respective split stator cores inward in the radial direction; and displacing split stator cores pressed by fastening member inward in the radial direction while the support member is supporting split stator cores.

Abstract: An electrical rotary machine is provided comprising a first stator core section being substantially circular and including a plurality of teeth, a second stator core section being substantially circular and including a plurality of teeth, a coil arranged between the first and second circular stator core sections, and a rotor including a plurality of permanent magnets. The first stator core section, the second stator core section, the coil and the rotor are encircling a common geometric axis, and the plurality of teeth of the first stator core section and the second stator core section are arranged to protrude towards the rotor. Additionally, the teeth of the second stator core section are circumferentially displaced in relation to the teeth of the first stator core section, and the permanent magnets in the rotor are separated in the circumferential direction from each other by axially extending pole sections made from soft magnetic material.

Abstract: An electromagnetic actuator generates electromagnetic forces across large radial gaps to support a body. The actuator has an actuator target having a rotational axis, and a target magnetic element arranged circumferentially around the rotational axis that has inner and outer magnetic poles. A cylindrical soft-magnetic target pole is magnetically coupled to the outer cylindrical magnetic pole of the target magnetic element. An actuator base includes radial poles arranged circumferentially around and radially spaced apart from the cylindrical soft-magnetic target pole. The radial poles and the cylindrical soft-magnetic target pole are magnetically coupled and define a plurality of magnetic control circuits. Control coils around the radial poles are configured to produce magnetic fluxes in the magnetic control circuits.

Abstract: Each of a plurality of brushes is tilted relative to an imaginary plane that is perpendicular to a rotational axis of an armature and is placed on one axial side of a brush holder, at which an interior of a yoke housing is located. A radial inner end part of each brush has a slide contact surface, which is generally parallel to the rotational axis of the armature and slidably contacts an outer peripheral surface of a commutator. At least a portion of the slide contact surface of each brush is axially disposed outside of an opening of the yoke housing.

Abstract: Actuator apparatus having a drive element (26) which can tilt and/or pivot in a predetermined manner in response to electrical activation and which is formed such that it can be contacted by an output partner in order to transmit mechanical drive energy, wherein the drive element, as a connection element, is operatively connected to two expansion units (10, 12; 40, 42), which are formed by means of magnetic shape-memory alloy material, such that the connection element executes a tilting and/or pivoting movement in response to an expansion or contraction movement of one of the expansion units, expansion or contraction movement being produced by the electrical activation and also a magnetic field which is generated by said electrical activation.

Abstract: A magnetic radial bearing and a bearing system for supporting a rotating shaft are disclosed. The bearing has a number of electromagnets circumferentially arranged around a rotating shaft. Each of the electromagnets has a coil which is electrically connected so as to generate both a magnetic bias and a rotating three-phase field. First terminals of opposing coils are connected in common to a corresponding phase of a three-phase controller for generating the rotating field, whereas second terminals of the coils not connected to the same phase are connected at corresponding star points. The star points are connected to DC power for generating the magnetic bias.

Abstract: A flat vibration motor for suppressing deformation of coils even in a reflow at a high temperature, having a stator structure 10 fixing a shaft 1 and having no-core coils C1 and C2; a cover case 20 covered by the stator structure 10 and supporting the other end of the shaft 1; and a rotor frame 30; wherein the stator structure 10 includes: a board 12 having a first face 12a being provided with electrode patterns E1-E3 and a second face 12b being provided with a wiring pattern to be connected to the electrode patterns and to the no-core coils; and a base frame 14 having a burring part 15a into which one end of the shaft 1 is fitted, and being sandwiched between the rotor frame 30 and the upper surfaces of the coils C1 and C2 by abutting against the coils C1 and C2.

Abstract: A hand tool RFI suppression system comprising a DC motor having a conductive housing, a power supply and a suppression circuit board supporting at least one suppression assembly and at least one ground circuit electrically coupled to the suppression assembly. The suppression circuit board is mounted to the motor housing with the at least one suppression assembly electrically coupled in parallel between the power supply and the DC motor and the ground circuit is electrically coupled to the motor housing. A method of suppressing RFI in a power hand tool is also provided.

Abstract: A field element core includes field magnet through holes and coupling part. The field magnet through holes are circularly disposed in a peripheral direction around a predetermined direction and are adjacent to each other in the peripheral direction to form a set. The field magnet through holes forming the same pair both extend along a given direction that is defined for each pair, when viewed from the predetermined direction. The coupling part 11 is provided between the field magnet through holes forming the same set and has ends as lateral surfaces, respectively. The entire lateral surfaces of the coupling part are curved to form a concave shape. Specifically, viewed from the predetermined direction, only at a given position between both ends of the lateral surface, a tangent of the lateral surface extends along an extending direction of the coupling part. The same holds true for the lateral surface.

Abstract: An axial gap motor includes a stator having stator teeth, and also includes a rotor opposed to the stator with a gap in an axial direction of the stator. Each of the stator teeth includes a stator tooth body, a stator tooth end joined to at least one axial-direction end of the stator tooth body, and a stator coil disposed around the stator tooth body. The stator tooth body includes a wound core comprised of a multi-layered amorphous foil strip winding. The stator tooth end is formed by a compact including a powder magnetic core, and the stator tooth end includes a surface opposed to the rotor. A cross-sectional area of the stator tooth end perpendicular to an axis of the amorphous foil strip winding is larger than a cross-sectional area of the stator tooth body perpendicular to the axis of the amorphous foil strip winding.

Abstract: A motor, including: a body, including a housing, a stator, and a rotor; and a controller, including a control box, and a control board. The body is disposed at the top of the motor. The controller is disposed at the bottom of the motor. The control board is disposed in the control box. A debug window is disposed on side wall or at the bottom of the control box. A sealing cover is disposed on the debug window. The sealing cover can be opened. The control board can be exposed for wire connection, adjustment of parameters of electronic components, and fixation of a rotating shaft according to requirements of users for installation and use.

Abstract: In an electromechanical transducer which includes a vibration membrane provided with an upper electrode, a substrate provided with a lower electrode, and a support member adapted to support the vibration membrane in such a manner that a gap is formed between the vibration membrane and the substrate with these electrodes being arranged in opposition to each other, it is constructed such that a part of the vibration membrane and a region of the substrate are kept in contact with each other without application of an external force, and a remaining region of the vibration membrane other than its region in which the contact state is kept is able to vibrate.

Abstract: The present invention relates to a linear motor provided with a magnetic body and an armature and adapted to produce a force causing the magnetic body and the armature to be relatively displaced in a given moving direction by interaction of magnetic fluxes generated between the magnetic body and the armature during an operation of supplying electric power to the armature.

Abstract: A power tool includes a motor housing, a motor, a motor-side terminal, a switch block, and a switch-side terminal provided on the switch block to be connected to the motor-side terminal. A hollow tubular member is provided on one of the motor housing and the switch block and extends in a longitudinal direction of the motor housing, and a fitting member is provided on the other of the motor housing and the switch block and fitted in the tubular member. The motor-side terminal and the switch-side terminal are connected to each other within a hollow of the tubular member. As long as the motor-side terminal and the switch-side terminal are at least connected to each other, the tubular member and the fitting member are held in the fitted state so that a connection between the terminals is isolated from the outside of the tubular member.