Abstract: A circuit (100) for use in voltage supply for an electrical device, having a first input (111) configured for connecting with a first voltage source, a second input (121) configured for connecting with a second voltage source, and a common output (133) configured for connecting with an input of the electrical device, comprising a first voltage converter (110) with an input connected to or being the first input (111), and configured to provide DC voltage at a first voltage level (V1) at an output (113), further comprising a second voltage converter (120) with an input connected to or being the second input (121), and configured to provide DC voltage at a second voltage level (V2) at an output (123), wherein the second voltage converter (120) is configured not to operate when a voltage level present at its output (123) is higher than a stop threshold, and to operate when a voltage level present at its output (123) is lower than a start threshold, the stop threshold is equal to or higher than the second voltage

Abstract: A wiper blade (10), in particular for a motor vehicle, is proposed with a wiping strip (16) mounted between a first spring bar portion (34) and a second spring bar portion (36) by a fastening portion (24) and having a substantially triangular lip portion (18). According to the invention, between the fastening portion (24) and the lip portion (18), a cavity portion (22) is provided, on which dampening means (52) are provided, in particular fastened thereto or formed in one piece therewith.

Abstract: A rain detection device for sensing rain drops on a surface includes at least one sensor unit and at least one evaluation unit. The sensor unit includes at least one capacitive sensor element. The sensor element is configured such that a capacitance characteristic of the sensor element changes based on an object contacting the surface. The evaluation unit is configured to detect rain drops on the surface based on a differential signal of the sensor element. The evaluation unit is configured to detect a rain drop on the surface based on a symmetry characteristic of the differential signal with respect to a zero point.

Abstract: A method for manufacturing a piezoelectric resonator. The method includes: depositing a piezoelectric layer and forming a recess in a lateral area in such a way that a silicon functional layer is exposed inside the recess, forming a silicide layer on a surface of the silicon functional layer exposed inside the recess, forming a diffusion barrier layer on the silicide layer, depositing and structuring a first and second metallization layer in such a way that a supply line and two connection elements are formed, forming the oscillating structure by structuring the silicon functional layer, the silicon functional layer of the oscillating structure being able to be electrically contacted via the first connection element and forming a lower electrode of the resonator, the first metallization layer of the oscillating structure being able to be electrically contacted via the second connection element and forming an upper electrode of the resonator.

Abstract: The disclosure relates to a method for operating a handheld power tool having an electric motor, the method comprising: S1 providing at least one model signal waveform that is associated with a work progress of the handheld power tool; S2 determining a signal of an operating variable of the electric motor; S3 comparing the signal of the operating variable with the model signal waveform and determining a conformity evaluation on the basis thereof; S4 identifying the work progress at least partially using the conformity evaluation; S5 executing a first routine of the handheld power tool at least partially on the basis of the work progress identified in method step S4. The disclosure also relates to a handheld power tool, in particular an impact driver, comprising an electric motor and a control unit, wherein the control unit is designed to carry out a method according to the disclosure.

Abstract: A computer-implemented method for training a classifier for classifying an input signal, the input signal comprising image data, the classifier comprising an embedding part configured to determine an embedding depending on the input signal inputted into the classifier and a classification part configured to determine a classification of the input signal depending on a the embedding. The method includes: providing a first training data set of training samples, each training sample comprising an input signal and a corresponding desired classification out of a plurality of classes, providing, in a knowledge graph, additional information associated with at least one of the target classifications, providing a knowledge graph embedding method of the knowledge graph, providing a knowledge graph embedding of the knowledge graph obtained by use of a knowledge graph embedding method, training the embedding part depending on the knowledge graph embedding and the first training data set.

Abstract: A radar sensor for motor vehicles. The radar sensor includes an antenna arrangement having multiple antenna elements linearly arranged at uniform distances along a connecting line, the distance between each two adjacent antenna elements being equal to half of the mean wavelength ? of the emitted radar signal, and the arrangement including at least one triple of adjacent antenna elements, in which the two antenna elements located on the outside in the triple, on the one hand, and the interposed antenna element, on the other hand, originate in opposite directions from the connecting line. The antenna arrangement includes at least one pair of antenna elements which originate in opposite directions from the connecting line and whose distance from one another is an integer multiple of the wavelength ?, so that one of these antenna elements has a negative amplitude taper in relation to the antenna elements of the triple.

Abstract: A fluid distributor. The fluid distributor includes a base body, a high pressure output, and a connecting piece which is joined to the base body and is used for the high pressure output. The base body is formed by a forging operation. An interior space of the base body is formed at the base body by a machining operation after the forging operation. The connecting piece is processed by a machining operation. A holding element is provided, that, as a result of the machining operation, an accommodating opening, which leads from an outer side of the connecting piece through a wall of the connecting piece and is used for at least partially accommodating the holding element, and an accommodating space, into which, during assembly, a connector of an injector is at least partially insertable in a mounting direction, are formed at the connecting piece.

Abstract: A method for operating a control unit for an exhaust gas sensor, in particular for a broadband lambda sensor for an internal combustion engine, in particular, of a motor vehicle, or for another sensor device. The control unit is designed to electrically activate the exhaust gas sensor. The control unit is, in particular, implemented in the form of an application-specific integrated circuit (ASIC). The method includes: specifying a measuring sequence and/or a starting point in time, in particular, for an operation of the control unit and/or of the exhaust gas sensor, with the aid of a computing device.

Abstract: A UV irradiation apparatus for coating systems that coat rigid or film-like workpieces, in particular furniture parts, having a transport apparatus for transporting workpieces provided with coating material from an inlet to an outlet through the UV irradiation apparatus, a UV light source arranged above the transport apparatus that irradiates the coated workpieces with UV light in an irradiation region between the inlet and the outlet, and a reflector or cover which shields the UV light source upward. A housing covers the irradiation region and the UV light source, which generally extends above the transport apparatus. A sensor of a measuring apparatus for direct or indirect automated measurement of radiant flux of the UV light source is arranged in the housing, and the sensor is in particular fitted fixed or movably on the housing or a holder. A method for quality assurance using this UV irradiation apparatus is also provided.

Abstract: A steering gear for a steering system of a motor vehicle includes a housing, toothed wheel, pinion shaft, floating bearing, and fixed bearing. The shaft includes a first portion, a second portion, and a pinion therebetween meshed with the wheel. The fixed bearing includes a bearing sleeve, an outer bearing ring a rotary bearing received in the sleeve, and a pivoting ring with inner and outer rings pivotably connected via at least one torsion bar. The inner ring is built into or connected to the sleeve, and the outer ring is fixed in the housing. The first portion is received in the rotary bearing. The floating bearing includes a further rotary bearing radially moveably mounted in the housing, and having a further outer bearing ring connected to one or more of the sleeve and the outer bearing ring via a connecting element. The second portion is received in the further rotary bearing.

Abstract: A computer-implemented method for operating a technical device with the aid of a multi-dimensional characteristic map. The characteristic map is defined by data points, to each of which a characteristic field value is assigned. For reading out the characteristic map, an output value is determined, as a function of an input variable point to be evaluated for the technical device, with the aid of one-dimensional basis functions, which are assigned to each dimension of a data point. The function values of the one-dimensional basis functions respectively have a monotone curve to a neighboring data point, which has the function value 0, and are outside of the neighboring data point 0. The technical device is operated as a function of the output value.

Abstract: A wiper blade apparatus with at least one spring strip having at least one wiper strip unit, which comprises at least one wiper lip and at least one wiper base body, which bounds at least one recess to a receptacle of the at least one spring strip and at least one damping cavity that is separate from the recess, and having at least one wind deflector unit, which at least partially overlaps with the wiper base body of the wiper strip unit and which comprises at least two guide bars, which extends to both sides of the wiper base body. It is proposed that the wiper strip unit comprise at least one resilient support elements arranged on the wiper base body and supported between the wiper base body and at least one of the guide bars.

Abstract: A method for detecting angle measuring errors in an angular-resolution radar sensor for motor vehicles. For stationary radar targets, in each instance, the radial velocity and at least one locating angle are measured, and with the aid of the measured locating angle, an expected value of the radial velocity is calculated and compared to the measured value. Measurements of the radial velocities and the locating angles for one or more stationary targets are taken. For each of these targets, an individual indicator value is calculated, which indicates the difference of the measured radial velocity from the expected radial velocity. The individual indicator values obtained are subjected to angle-dependent scaling to compensate for the angular dependence of distortive angle errors. An indicator of the angle measuring error is calculated from the scaled, individual indicator values.

Abstract: A power tool, in particular an electric screwdriver, includes (i) a housing; (ii) an electric motor which is located in the housing and by way of which an insert tool located in a tool holder can be rotationally driven; (iii) and a control device which is designed to control a braking process of the electric motor in response to a braking request in order to stop the rotating insert tool. The braking process includes countercurrent braking. A method for braking an electric motor of a power tool, a computer program, and a machine-readable storage medium are also disclosed.

Abstract: Systems and methods for controlling an autonomous vehicle. One system includes an electronic processor and a memory configured to store an occupancy grid map. The occupancy grid map includes a set of cells associated with respective positions in an environment. A sensor is configured to output sensed occupancy information associated with positions in the environment. The electronic processor is configured to determine a position of the autonomous vehicle within the environment, and receive, from a server, a high density map. The high density map contains occupancy information. The electronic processor initializes the cells with occupancy information based on the high density map. The electronic processor confirms, based on the sensed occupancy information, a state of the set of the cells of the occupancy grid map, and controls vehicle movement based on the occupancy grid map.

Abstract: A drivetrain for a vehicle includes a drive motor, an axle differential, and a friction brake. The drive motor is configured to drive the axle differential. The friction brake is positioned in a transmission path between the drive motor and the axle differential, and is configured to generate a braking torque.

Abstract: A hand-held power tool includes a tool receiver with a tubular tool holder and an assigned locking device. The assigned locking device includes a locking element configured to lock an insert tool in the tubular tool holder, a pressure sleeve that is spring-loaded via an assigned spring element, and a stop sleeve, the spring-loaded pressure sleeve configured to press the locking element in a locking position against the stop sleeve. The tubular tool holder includes at least one recess in which the locking element in the locking position is located, at least portionally. The stop sleeve has, on its inner circumference, at least one contact surface that is matched to an outer contour of the locking element such that a first surface contact between the at least one contact surface and the locking element is established in the locking position.

Abstract: A power transistor cell including a layer arrangement, which includes a front side and a rear side, the front side being situated opposite the rear side. A trench extends starting from, and perpendicular to, the front side along a first direction into the layer arrangement. The trench extends at least into a current-spreading layer, and expands along a second direction, which is situated perpendicularly to the first direction. Field shielding areas are situated at least partially in the current-spreading layer, wherein source areas and field shielding contacting areas are situated alternatingly along the second direction. One portion each of the body areas is situated between each source area and each field shielding contacting area. The field shielding contacting areas connect the field shielding areas to first metal areas on the front side. The field shielding contacting areas make contact at least partially with side faces of the trench.

Abstract: A method for determining a rotational frequency of a wheel, in particular of a motor vehicle, uses a rate of rotation sensor that has a rotary sensor assigned to the wheel and a sensor element assigned to the rotary sensor. The rotary sensor has pulse generators that are arranged in a manner distributed over its circumference and spaced evenly from one another and whose edges are recorded by the sensor element so as to determine the rotational frequency of the rotary sensor. There is provision to use an optimal filter in order to compensate a modulation caused by an eccentricity, and to adapt modulation parameters of the optimal filter through a sequential least-squares method. A time-equidistant frequency signal is subjected to short-term averaging, for example using a PT1 filter, and the modulation is modelled as sinusoidal interference and compensated.