Abstract: A brushless motor including a stator having teeth and a rotor having magnetic pole portions is disclosed. The magnetic pole portions are arranged to have the same polarities as each other. The rotor includes gaps that function as magnetic resistance at circumferential ends of each of the magnetic pole portions so that an iron core portion is formed between the circumferentially adjacent magnetic pole portions. Magnetic flux of the magnetic pole portions passes through the iron core portion along the radial direction. The gaps include a first gap located on the leading end of the magnetic pole portion in the rotation direction of the rotor and a second gap located on the trailing end of the magnetic pole portion in the rotation direction of the rotor. The circumferential width of the first gap is set to be greater than the circumferential width of the second gap.

Abstract: A motor includes a base, a stator and a rotor. The base is equipped with a shaft tube having an outer circumferential wall. The stator is coupled with the shaft tube of the base and has an assembly hole. A plurality of close-fitting portions is formed between an inner circumferential wall of the assembly hole and the outer circumferential wall of the shaft tube, and an adjustment gap is formed between each two adjacent close-fitting portions. The rotor has a shaft rotatably coupled within the shaft tube of the base.

Abstract: Disclosed is a stator for an electric motor, especially a stepping motor, comprising at least two stator parts (14, 16, 18) which jointly surround a stator hole (12) and are interconnected, connecting sections being provided for connecting the stator parts (14, 16, 18). The stator is characterized in that the connecting sections (13, 15, 17) are tapered relative to the adjacent sections of the adjoining stator parts (14, 16, 18) in an axial direction, parallel to the axis (A) of the stator hole (12), and form isthmi between the adjoining stator parts.

Abstract: A linear stage system is provided. The linear stage system includes a base, a carriage plate, a first shaft, a first air bushing coupled to the base, a first motor coupled to the base and the carriage plate, and a first position encoder. The first air bushing is configured to support the carriage plate via the first shaft, wherein the first air bushing utilizes the first shaft as a guide surface and is configured to support positioning of the carriage plate along an axis. The first motor is configured to create a linear motion parallel to the axis in a first motor element coupled to the carriage plate to position the carriage plate along the axis in response to a first control signal. The first position encoder is configured to determine a position of the carriage plate relative to the base.

Abstract: A stator having a stator core and coils is disclosed. The stator core includes split core pieces each having a tooth portion. The split core pieces are arranged annularly such that the distal ends of the tooth portions face radially inward. A lead wire is continuously wound about an adjacent pair of the tooth portions such that coils of different phases are formed in the circumferentially adjacent tooth portions, so that a plurality of connecting wires are provided, each connecting wire connecting coils of different phases. The connecting wires are connected to one another while being connected to one another, such that a neutral point is created.

Abstract: A vibration motor comprises a permanent magnet supported by a spring and an electromagnet. The electromagnet generates an alternating second magnetic field which exerts a torque on the permanent magnet and causes said permanent magnet to rotate and vibrate. The supporting spring transfers the vibration energy from the permanent magnet to the housing and ultimately to the user.

Abstract: An armature for a rotating electrical machine, the armature includes a cylindrical core having a plurality of longitudinally extending slots that are dispersedly arranged in a circumferential direction; and coils wound around the slots, wherein each of the slots is formed such that an inner circumferential opening thereof that is open radially inwardly is smaller in a circumferential width than a slot interior positioned on a radially outer side of the inner circumferential opening, and linear conductors forming the coils are each formed to be larger in the circumferential width than the inner circumferential opening.

Abstract: The present disclosure is related to a power control apparatus and a method for controlling power, more specifically to a power control apparatus that controls the risk of overcurrent in a power generator when the voltage in the power grid is low. In accordance with an embodiment of the present disclosure, a power control apparatus that controls power in a power generation system including a generator generating power can include a current comparator, which calculates an error current by using a difference between a current measured at the generator and a rated current of the generator, a controlling unit, which calculates a real power value by receiving the error current and outputs a switch driving signal corresponding to the calculated real power value, a switch, which is operated by the switch driving signal, and a resistance device, which is coupled to the switch to consume the error current.

Abstract: A motor control apparatus including: a motor including a rotating member and a stator; a housing member including a motor housing portion and a power system substrate housing portion, the motor housing portion enclosing the motor and extending in an axial direction of the rotating member, the power system substrate housing portion being integrally formed with the motor housing portion and being located is radially outside of the motor; a control system board supporting a component of a control circuit to control the motor, and including a first board portion facing the motor in the axial direction, and a second board portion extending radially from the first board portion; and a power system substrate supporting a component of a power supply circuit to supply power to the motor, the power system substrate being provided in the power system substrate housing portion.

Abstract: A coil assembly for a linear motor includes a coil unit which has multiple adjacently arranged coils, a base, and a resin encapsulated layer. The coils have two corresponding vertical action sides, a first non-action side, and a second non-action side. The coils further form multiple interlaced first bending sections on the first non-action side. Plural conducting wires disposed on the second non-action side could connect to an external cable on an end section of the coil unit. The base has a receiving slot thereon. The cross-section of the receiving slot corresponds in shape to that of the first bending sections for insertion of the coils. The resin encapsulated layer covering the coils and sealing the receiving slot of the base increases the contacting area between the coils and the inner wall of the receiving slot of the base to enhance the heat dissipation rate.

Abstract: A drive device control unit that controls a drive device including a rotating electrical machine, the drive device control unit includes a control substrate that controls the drive device; a switching element module that forms an inverter that drives the rotating electrical machine; a smoothing capacitor that smoothes an input power supply of the inverter; a first base having the switching element module fixed thereto; and a second base supported by the first base and having the smoothing capacitor fixed to a first surface of the second base, wherein the control substrate is fixed to a second surface of the second base opposite to the first surface having the smoothing capacitor fixed thereto.

Abstract: Airflow regeneration device, which generates electricity from air resistance, but only when the vehicle is in the speed reduction mode. In the non-speed reduction mode, the air resistance is minimally increased. In the speed reduction mode, the air resistance is intentionally increased.

Abstract: A PMDC motor, particularly for driving an automobile liftgate, comprises a stator and a rotor rotatably mounted to the stator. The stator comprises a housing and an end cap mounted to one end of the housing. The end cap comprises: a first brush, a second brush, a first terminal, a second terminal, a first choke connected in series with the first brush and the first terminal, a second choke connected in series with the second brush and the second terminal, an overcurrent protection component connected in series with the second brush, and a set of capacitors. Each of the chokes comprises an inductor core extending axially and a winding wound about the inductor core.

Abstract: A drive arrangement with a first motor and a second motor is described, the first and second motor being coupled via a first coupling unit. The first motor is provided to generate uniform low-frequency movements and the second motor performs a higher frequency alternating movement to be overlapped. The total movement is transmitted from the second motor to a machine component coupled via a second coupling unit. The first coupling unit is configured to transfer the uniform low-frequency movement of the first motor to the second motor, wherein a transmission of the higher frequency alternating movement of the second motor to the first motor is suppressed.

Abstract: A superconducting machine device is disclosed including a machine; a rotor including a superconductive coil; and a cooling system including at least one incline-intolerant component for cooling the coil. In at least one embodiment, at least one component is held by a carrier compensating for an incline of the machine device.

Abstract: A rotary actuator including: a housing that rotatably supports thereinside a rotor shaft of an electric motor; an eccentric shaft portion that is provided on a protruding end portion of the rotor shaft that protrudes outside the housing; an external gear that is rotatably supported on the eccentric shaft portion via a bearing; an internal gear that is fixed to an outer surface of the housing and meshes with the external gear; and a transmitting portion that is provided on the external gear, and transmits rotation force to an external output shaft.

Abstract: A pulse adapter assembly that includes a pulse assembly that has a housing with a cavity disposed therein that receives a sensing device and a driven magnet. The adapter assembly has a shaft having a bearing assembly thereon and driver magnet wherein the shaft is disposed within the cavity of the pulse assembly such that the driven magnet and driver magnet couple to position the driven magnet at a predetermined distance from the sensing device. A workpiece such as a flow meter is attached to the adapter assembly wherein the sensing device monitors the driven magnet to determine an operational parameter of the workpiece.

Abstract: The present invention provides, as one aspect, an apparatus for controlling electric power generation for vehicles, which controls energization of an excitation winding of a generator driven by an internal-combustion engine controlled by a controller to control output voltage of the generator. The apparatus includes a restraining unit that restrains electric power generation of the generator in response to a given signal, and a releasing unit the releases the restraint by the restraining unit when generated voltage of the generator is equal to or less than a first predetermined value. The apparatus further includes a detecting unit that detects starting of the internal-combustion engine, a measuring unit that measures elapsed time from the detection of the starting by the detecting unit, and a prohibiting unit that prohibits the release of the restraint by the releasing unit until a predetermined time is measured by the measuring unit.

Abstract: Disclosed herein is a linear vibrator. The linear vibrator includes a stationary unit which has on an upper portion thereof a magnet generating a predetermined magnetic force and a yoke, and defines an internal space. A vibratory unit includes a coil mounted to face the magnet and applying an electric current, and a mass body. A spring is secured at a lower end thereof to the stationary unit and secured at an upper end thereof to the vibratory unit, thus elastically supporting the linear motion of the vibratory unit. A lubricating part is provided between an outer circumference of each of the magnet and the yoke and the coil, thus preventing noise and abrasion when the vibratory unit moves linearly, in addition to maintaining a vibration.

Abstract: An electrostatic comb actuator having reduced in-plane rotation of a tiltable element is disclosed. The actuator has a stator comb electrode and a tiltable rotor comb electrode. The rotor comb electrode fingers extend from an anchor wall running parallel to the axis of rotation of the rotor at a first distance from the axis of rotation. The rotor comb electrode fingers extend towards the axis of rotation for a length that is smaller than the first distance. The stator electrodes are shifted towards the axis of rotation, so that the stator electrode fingers are only partially overlapping with the rotor electrodes fingers.