Abstract: A positioning system that includes (a) a linear motor that includes a movable magnetic unit and a coil stator, the coil stator includes a group of coil stator segments; wherein the mechanical support unit is mechanically coupled to the movable magnetic unit; (b) a mechanical support element for supporting a sample within a vacuum chamber; (c) a power supply that is configured to independently supply power to different coil stator segments of the coil stator segments to induce a movement of the movable magnetic unit in relation to the coil stator, along a axis; (d) a heat reduction element that is configured to reduce a temperature of the coil stator; and (e) a controller that is configured to control the movement of the movable magnetic unit by controlling the supply of power to the different coil stator segments.

Abstract: An electronic device includes a housing. The housing includes a first plate defining a first wall; a cover defining a second wall opposite the first wall, a first sidewall, and a second sidewall opposite the first sidewall; and a second plate and a third plate, respectively defining a third sidewall, and a fourth sidewall opposite the third sidewall. The first, second, third, and fourth sidewalls extend between the first wall and the second wall. The electronic device further includes a movable mass disposed within the first, second, third, and fourth sidewalls of the housing; a first spring and a second spring, respectively attached to first and second opposite ends of the movable mass; and a first material and a second material, respectively joining the first spring to the second plate and the second spring to the third plate.

Abstract: The patent application discloses a rotor for a motor. The rotor may comprise a shaft body, a shaft, a rotor magnet, and a plurality of air holes. The shaft body may have a first end, a second end, and a cylindrical body between the first end and the second end. The shaft may extend along a central axis of the shaft body. The rotor magnet on a magnetic slot inside the cylindrical body may be configured to rotate together with the shaft. The plurality of air holes on the first end of the shaft body may run through the cylindrical body and end in the second end of the shaft body.

Abstract: A slip ring device for motor includes a shaft having a hollow therein, a slip terminal assembly including a first slip terminal portion and a second slip terminal portion and a body portion coupled to the shaft and electrically isolating the first slip terminal portion from the second slip terminal portion, and a fixing ring disposed on the slip terminal assembly and fixing the slip terminal assembly to the shaft and further includes a guide portion formed on an outer surface of the coupling portion in an insertion direction of the slip terminal assembly.

Abstract: Provided is a synchronous electrical machine that includes a machine housing having a stator and a rotor lodged in the stator, the rotor being separated from the stator by an airgap, and the machine housing dissipating thermal losses generated by the stator. The stator having stacks of laminations and at least one channel extending along a longitudinal direction of the stator and formed in the laminations, two adjacent stacks of laminations being separated by pins or spacers to form an extraction duct connected to the channel, the machine housing further having an extraction opening so that a fluid injected in the air gap at the ends of the stator flows in the extraction duct and in the channel, and is extracted from the machine through the opening to cool the stator and the rotor.

Abstract: A motor may include a rotor; a stator comprising a stator core and a coil; a housing that houses the rotor and the stator; and a first annular member that provides a seal between a first end face of the stator core in an axial direction of the stator core and an inner wall surface of the housing. The first annular member may include a plurality of first holes through which refrigerant is injected toward a first coil end of the coil protruding from the first end face of the stator core. At least one of the plurality of first holes may be covered with at least one mesh filter.

Abstract: A stator of an electric machine of axial flux design, with and a stator core, which forms a structural unit and includes a first region oriented towards a first axial outer side, and a second region oriented towards a second axial outer side. In the first region, stator teeth and winding grooves are formed on the first outer side alternately in the peripheral direction. In the second region, stator teeth) and winding grooves are formed on the second outer side alternately in the peripheral direction. The stator teeth of the first and second regions are oriented offset to each other. The winding grooves of the first and second regions are radially distanced from one another in the peripheral direction such that there is no overlap of the winding grooves of the first and second regions in the axial direction in the outer surface that runs around radially.

Abstract: According to one embodiment, a rotary electric machine includes a rotor and a stator. The rotor includes a rotary shaft, a first core, a permanent magnet, and an intermediate member. The rotary shaft extends in a first direction. The first core is provided around the rotary shaft in a first plane perpendicular to the first direction. The permanent magnet is provided around the first core in the first plane. The intermediate member is provided between the rotary shaft and the first core. The intermediate member includes a first portion containing a carbon fiber, and a second portion aligned with the first portion in the first direction and containing a metal. The stator is provided around the rotor in the first plane.

Abstract: An axial motor includes a fastening plate and a plurality of magnetic cores. The plurality of magnetic cores are spaced apart around the inner shaft sleeve. A magnetic core end part of the magnetic core covers a part of an end surface of a magnetic core winding part of the magnetic core, and an end surface, of the magnetic core winding part, that is not covered by the magnetic core end part forms a step surface. The fastening plate is fastened to an end surface of the inner shaft sleeve. The fastening plate includes an accommodating groove that is concave relative to the end surface of the inner shaft sleeve. A plurality of magnetic core accommodating holes are provided in the accommodating groove. The plurality of magnetic core accommodating holes respectively correspond to magnetic core end parts that accommodate the plurality of magnetic cores.

Abstract: A motor unit disclosed herein may comprise: a rotor supported rotatably; a stator core facing the rotor in a radial direction; a stator coil disposed on the stator core; and a first busbar having a plate shape and including a base end connected to the stator coil and a distal end including a connection terminal. The first busbar may include a linear section extending along a straight line. The linear section of the first busbar may include a reinforced section where a thickness direction of the first busbar varies along a width direction of the first busbar.

Abstract: A case (1) that houses a rotary electric machine (2) and an inverter device (INV) has an inlet (11) through which coolant flows, and a channel (4) along which the coolant flows. The channel (4) includes a first heat exchange portion (41) where heat is exchanged between the inverter device (INV) and the coolant, and a turbine disposition portion (43) where a turbine (7) is disposed. The turbine (7) is rotated by a flow of the coolant passing through the turbine disposition portion (43), and a pump rotor (88) of an oil pump (8) that discharges oil to be supplied to the rotary electric machine (2) is drivingly connected to the turbine (7).

Abstract: Provided are a rotor, and a propeller driving device and an aircraft using same. The propeller driving device includes: a housing in which an upper cover and a lower cover having a plurality of through holes are respectively coupled to an upper portion and a lower portion of a cylindrical case; a stator arranged inside the case; a rotor arranged at a distance from the stator; and a rotary shaft connected to the rotor through a plurality of bridges and having both ends rotatably supported by an upper bearing and a lower bearing positioned at respective centers of the upper cover and the lower cover, wherein inner cooling of a motor is formed by an air flow passage that passes through a plurality of through holes of the upper cover and the lower cover and a plurality of spaces formed between the plurality of bridges.

Abstract: A stator assembly for an electric machine, including a sheet metal package, a winding assembly, and a collimator. The sheet metal package includes sheets and extends between a first and second axial end. The sheets include grooves forming groove pockets in the sheet metal package. The winding assembly extends through the groove pockets, the groove pockets at least partially including a first plurality of grooves configured as open grooves in a first axial region provided at the first axial end, a second plurality of grooves configured as open grooves in a second axial region provided at the second axial end, and a third plurality of grooves in at least one third axial region, the at least one third axial region lying between the first axial region and the second axial region. The third plurality of grooves are configured as closed grooves.

Abstract: A rotor punching sheet includes a sheet body and a plurality of magnet slots defined in the sheet body. Each magnet slot includes a first section and a second section arranged opposite to each other and each configured to extend in a first direction; and a third section and a fourth section arranged opposite to each other and each adjacent to and connected to the first section and the second section, to form the magnet slot together with the first section and the second section. The first section and the third section are connected to each other through a curved section, the curved section is configured to arch towards a side away from a center of the sheet body in a second direction relative to the first section, and the second direction is perpendicular to the first direction.

Abstract: A transducer includes a substrate, a lower electrode, an insulating layer, an oscillating membrane, and an upper electrode. The substrate has a cave and an island-shaped protrusion defining the cave. The lower electrode is disposed in the cave and on the island-shaped protrusion of the substrate. The insulating layer is disposed on the lower electrode. The oscillating membrane includes a contact portion and an oscillating portion. The contact portion is in contact with the insulating layer and is located between the oscillating portion and the insulating layer. A cavity is located between the oscillating portion and the cave of the substrate. The upper electrode is disposed on the oscillating membrane. Moreover, a manufacturing method of the transducer is also provided.

Abstract: A rotary electromagnetically controlled resistance device not only installs a high-precision sensor module in the resistance device only, but also writes integrated 3-parameter actual measured data (speed, torque and current) into an EEPROM of the sensor module and installs the EEPROM in the resistance device. Software and hardware of a controller are installed externally, such that a signal cable of the sensor module can be passed through the rotary resistance device and connected to the external controller. Therefore, this invention can overcome the issue of setting the controller in the resistance device in the related art, and the resistance device can be developed independently and completely without being limited by the controller to greatly improve the flexibility in mass production and maintenance of the resistance device, while the high-precision 3-parameter real measured data can be moved and kept together with the resistance device to achieve a long-term high-precision effect.

Abstract: An inverter unit at an end portion of a motor in a rotation shaft direction, the motor includes a conductive member electrically connected to the inverter unit, the inverter unit includes a control component connected to the conductive member and configured to control driving of the motor, the conductive member extends from the end portion of the motor along a rotation shaft of the motor in a state of being adjacent to the rotation shaft, and the control component is disposed on a radially outer side of the conductive member.

Abstract: A rotating electric machine system includes a rotor and a stator. A partition wall member is interposed between the rotor and the stator. The partition wall member forms a rotor chamber and a housing internal oil passage in a rotating electric machine housing. A separation distance between the rotor and an inner circumferential wall of the partition wall member is defined as an inner side separation distance. A separation distance between an outer circumferential wall of the partition wall member and a stator is defined as an outer side separation distance. The inner side separation distance is greater than the outer side separation distance.

Abstract: Disclosed rotor assemblies can be configured to address differential thermal expansion in the rotor assembly during ESP motor use. Some rotor assembly embodiments can employ an improved stacking technique to minimize differential thermal expansion issues by removing certain components from the axial stack of supporting components of the rotor assembly. Alternatively, or in conjunction, some rotor assembly embodiments can use a biasing element which is configured to compensate for the differential axial thermal expansion, tolerance stack-up, and/or gravity.

Abstract: A motor, a powertrain, and a device. A plurality of first oil channels are formed between an inner surface of a housing and an outer surface of a stator core, second oil channels are formed at groove roots of coil slots of the stator core, to form double-layer oil channels at the outer surface of the stator core and the root of the coil slot of the stator core, and ensure effective cooling of the stator core and a coil winding. After cooling oil is injected from an oil filling port, a flow direction of the cooling oil in some of the second oil channels is opposite to that of cooling oil in a remaining second oil channel, so that interleaved reverse flows are implemented, and axial temperature of the stator core and the coil winding is more even.