Abstract: An axial flux machine includes a rotor mounted rotatably relative to a stator. The stator has at least one first disc-shaped stator body, and the rotor and also the first stator body are arranged such that a first magnetically active gap running in a radial plane is formed axially between the first stator body and the rotor. The stator is surrounded at least in portions by a motor housing; a ring-segment-shaped groove which is open towards the first stator body and extends in a radial plane is formed; and a plurality of cooling openings are provided in the motor housing in the region of the ring-segment-shaped groove, by means of which cooling openings a cooling fluid that can be introduced into the ring-segment-shaped groove can be applied to the first stator body.

Abstract: A rotor for an electric machine, including a rotor shaft (1) on which an axial stop is provided, which is formed by a securing ring (3) received in a slot (4) in the shaft, and a rotor body (6) pushed onto the rotor shaft (1) and supported axially on the stop. The securing ring (3) is received in a recess (10) in the rotor body (6) and is radially surrounded by the latter.

Abstract: A rotary actuator for a flight control surface includes a first electric motor connected to a first geartrain having planetary gearsets in series and a first drive gear driven by the first electric motor via the first geartrain. The first geartrain and the first drive gear define a first powertrain. The rotary actuator also includes a second electric motor connected to a second geartrain having planetary gearsets in series. The second geartrain is separate from the first geartrain. The rotary actuator further includes a second drive gear driven by the second electric motor via the second geartrain. The second geartrain and the second drive gear define a second powertrain that is coaxial with the first powertrain. Additionally, the rotary actuator includes an output shaft parallel to the first and second powertrains. The output shaft is driven simultaneously via the first and second drive gears.

Abstract: A drive system for a motor vehicle includes a first axle drive train which drives a first vehicle axle and is accommodated in a first drive train housing. A first electric machine and a first transmission arrangement form a first structural unit with the first electric machine. A second axle drive train drives a second vehicle axle and is accommodated in a second drive train housing and has a second electric machine and a second transmission arrangement forming a second structural unit with the second electric machine. The first electric machine and the second electric machine as well as the first transmission arrangement and the second transmission arrangement are substantially identically constructed.

Abstract: AR glasses comprise a frame with a front frame part (1), mounting means (2, 3, 8) and an optical unit (5). The optical unit (5) is held in the front frame part (1), wherein the optical unit (5) forms a module mountable to the eyeglass frame as a single component. The optical unit (5) comprises at least a display source (56), at least one refractive device, such as triplet lens (54), and a beamsplitter (51, 52). These AR glasses are robust, compact and affordable.

Abstract: A linear actuator for a flight control surface including at least one electric motor, a threaded shaft rotationally driven via the at least one motor about a threaded shaft pivot axis, first and second threaded nuts axially displaced via rotation of the threaded shaft, and an output shaft coupled to the threaded shaft, such that axial displacement of the first and second threaded nuts rotates the output shaft about an output shaft pivot axis that is substantially parallel with the threaded shaft pivot axis. Rotation of the threaded shaft in a first rotational direction via the at least one motor prompts movement of the first and second threaded nuts axially toward each other. Further, rotation of the threaded shaft in a second rotational direction opposite the first rotational direction via the at least one motor prompts movement of the first and second threaded nuts axially away from each other.

Abstract: An electrical machine for a motor vehicle drive, including a main housing body a stator, which is fastened to the main housing body by at least one fastening element and a rotor connected to a connection shaft for conjoint rotation. The connection shaft is radially and axially supported by a main rolling element bearing, either on the main housing body directly or on the main housing body indirectly the stator.

Abstract: A module, in particular a rotor assembly (2) or stator assembly (49), for an electrical machine (1, 45), including multiple components (3), wherein at least one volume filled with a damping fluid is formed between at least two of the components (3), wherein, for the purpose of vibration damping, the damping fluid is displaceable as a result of a change in the geometry of the volume resulting from an elastic vibration of at least one component (3) adjacent to the volume.

Abstract: A harmonic drive is disclosed that includes a flexible ring element, which can be deformed in a locally radial manner in the circumferential direction by a wave generator with a non-round outer peripheral surface and which includes an outer toothing, and a rigid ring element with an inner toothing. The outer toothing of the flexible ring element at least partly meshes with the inner toothing of the rigid ring element in order to transmit a torque at at least one tooth engagement region, wherein the wave generator has a non-round first inner ring which protrudes at least partly into the flexible ring element and is rotationally fixed to a shaft. The harmonic drive additionally comprises a first bearing element, comprising a second inner ring and at least one first outer ring, said second inner ring being secured to the rigid ring element. Each outer ring is secured to the flexible ring element.

Abstract: An electrical axial flux machine, in particular for a drive train of a hybrid or fully electrically operated motor vehicle is provided. The axial flux machine includes a stator having a plurality of stator coils distributed over the circumference of the stator; power electronics for supplying current to the stator coils; and a high-voltage terminal for establishing an electrical connection between the stator coils and the power electronics. Busbars are located above the stator coils, in the radial direction. The busbars enclosing, in an annular manner, the stator and/or a rotor that can be rotated relative to the stator, and electrically conductively connecting the stator coils to the high-voltage terminal.

Abstract: An electrical system with optimised heat dissipation and an electrical drive unit having the electrical system is disclosed. The electrical system has a bus bar, a housing element, and a heat-conducting element which contacts the bus bar in a thermally conductive manner. At least part of the housing element includes, on a side facing the bus bar, a shaped element which projects from an outer extension plane and forms a contact surface against which the heat-conducting element (40) bears in a thermally conductive manner.

Abstract: A rotor assembly includes a rotor for an electric motor, a rotor carrier non-rotatably connected to the rotor, a rotor carrier flange, and a split spring. The rotor carrier includes a groove and a castellated portion and the split spring is disposed in the groove and arranged to clamp the rotor carrier flange against the castellated portion. The split spring may include an annular portion disposed in the groove and a tapered portion extending radially inwards from the annular portion. The split spring may also include a cut portion separating opposite circumferential ends of the annular portion.

Abstract: In an embodiment, a method includes: obtaining one or more radar measurement frames, each one of the one or more radar measurement frames including respective data samples acquired by a radar sensor monitoring a scene; for each one of the one or more radar measurement frames, determining a respective 2-D angular intensity map of the scene based on the respective radar measurement frame; and performing a people counting operation based on the one or more 2-D angular intensity maps determined for the one or more radar measurement frames to determine a people count for the scene.

Abstract: In an example, for manufacturing a semiconductor device, first dopants are implanted through a first surface section of a first surface of a silicon carbide body. A trench is formed that extends from the first surface into the silicon carbide body. The trench includes a first sidewall surface and an opposite second sidewall surface. A spacer mask is formed. The spacer mask covers at least the first sidewall surface. Second dopants are implanted through a portion of a bottom surface of the trench exposed by the spacer mask. The first dopants and the second dopants have a same conductivity type. The first dopants and the second dopants are activated. The first dopants form a doped top shielding region adjoining the second sidewall surface. The second dopants form a doped buried shielding region adjoining the bottom surface.

Abstract: A vehicle ride-height adjustment device with a locking mechanism that has a simple control path and avoids the need for a separate actuator to control locking. The locking mechanism includes a locking gear coupled for rotation with a driven gear of a ride-height actuator, a locking pawl supported adjacent the driven gear for pivoting movement between a locked position engaged with a surface of the locking gear and restricting rotation thereof in at least one direction and a disengaged position spaced apart from the locking gear and permitting rotation of the driven gear. A shifting fork is coupled for rotation with the drive gear configured to move the locking pawl between engaged and disengaged positions. A torque limiter allows the shifting fork to rotate independent from the drive gear when a torque threshold is exceeded.

Abstract: A power semiconductor device is proposed. The vertical power semiconductor device includes a silicon carbide (SiC) semiconductor body having a first surface and a second surface opposite to the first surface. The SiC semiconductor body includes a transistor cell area comprising gate structures, a gate pad area, and an interconnection area electrically coupling a gate electrode of the gate structures and a gate pad of the gate pad area via a gate interconnection. The vertical power semiconductor device further includes a source or emitter electrode. The vertical power semiconductor device further includes a first interlayer dielectric comprising a first interface to the source or emitter electrode and a second interface to at least one of the gate electrode, or the gate interconnection, or the gate pad, and wherein a conduction band offset at the first interface ranges from 1 eV to 2.5 eV.

Abstract: Signal processing circuitry includes at least one processor configured to obtain a digitized radar signal, and further configured, for one or more iterations, to: determine a first power of at least one first signal sample of the radar signal; determine a second power of at least one second signal sample of the radar signal, the at least one second signal sample being subsequent in time to the at least one first signal sample; and determine a difference value between the second power and the first power. The at least one processor further configured to detecting a burst interference signal occurring within the radar signal based on the one or more difference values from the one or more iterations.

Abstract: A method is provided for estimating an angle of an object with respect to a vehicle. A transformation of reflected radar signals is calculated, wherein the result of the transformation depends on a range with respect to the vehicle. A long beam vector is generated for respective range bins provided by the transformation by rearranging the result of the transformation such that the respective long beam vector comprises elements of the transformation from radar all receiver elements for each range bin. A reference vector is calculated for each range bin based on a signal model which depends on the motion of the target object relative to the vehicle and which is parameterized regarding the angle of the target object. The long beam vector and the reference vector are correlated, and the angle of the target object is determined based on the correlation result.

Abstract: This disclosure describes circuits and techniques for determining inductance on an electrical line. In some examples, a method comprises charging a capacitor in time steps to a voltage level; counting a number of the time steps to the voltage level, wherein the number of the time steps defines a coarse measurement inductance of the electrical line; measuring a charging rate associated with charging the capacitor within a measurement window that is defined at the voltage level, wherein the charging rate associated with charging the capacitor within the measurement window defines a fine measurement of the inductance of the electrical line; and outputting an indication of the number of time steps and an indication of the charging rate associated with charging the capacitor within the measurement window.

Abstract: A method is provided for assigning a bounding box to an object in an environment of a vehicle. Data related to objects located in the environment of the vehicle are acquired via a sensor. Based on the data, a respective spatial location and a respective size of a plurality of preliminary bounding boxes are determined such that each preliminary bounding box covers one of the objects at least partly. A respective velocity of each preliminary bounding box is estimated based on the data. A subset of the plurality of preliminary bounding boxes being related to a respective one of the objects is selected, where the subset is selected based on the respective velocity of each of the preliminary bounding boxes. A final bounding box is assigned to the respective one of the objects by merging the preliminary bounding boxes of the corresponding subset.