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    Method and apparatus for detecting electrically conductive foreign bodies during inductive energy transmission
    22.
    发明授权
    Method and apparatus for detecting electrically conductive foreign bodies during inductive energy transmission 有权

    公开(公告)号：US11894696B2

    公开(公告)日：2024-02-06

    申请号：US17415089

    申请日：2018-12-20

    Applicant: UNIVERSITÄT STUTTGART

    Inventor： Mike Böttigheimer ,  Nejila Parspour ,  Stefanie Hermann

    IPC: H02J50/60 ,  H02J50/10 ,  B60L53/124 ,  H02J7/00

    CPC classification number: H02J50/60 ,  B60L53/124 ,  H02J7/00711 ,  H02J50/10

    Abstract: In a method and an apparatus for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil (1) and a secondary coil (2), at least one sensor coil (5) is arranged between the primary coil (1) and the secondary coil (2), and a current flowing in the sensor coil (5) due to the induced voltage during the energy transmission is detected and evaluated. In this case, the sensor coil (5) is connected to at least one capacitor to form a resonant circuit which is matched to the excitation frequency of the primary coil (1). The phase position of the current in the resonant circuit in relation to a reference signal is then used to determine whether there are electrically conductive foreign bodies (4) between the primary coil (1) and the secondary coil (2). A high degree of sensitivity, also in relation to small electrically conductive foreign bodies within the energy transmission path, is achieved by means of the method and the apparatus.

    APPARATUS FOR ABSORBING PRECIPITATION WATER AND FOR WATER EVAPORATION
    23.
    发明公开
    APPARATUS FOR ABSORBING PRECIPITATION WATER AND FOR WATER EVAPORATION 审中-公开

    公开(公告)号：US20240018756A1

    公开(公告)日：2024-01-18

    申请号：US18031950

    申请日：2021-06-18

    Applicant: Universität Stuttgart

    Inventor： Christina EISENBARTH ,  Walter HAASE ,  Werner SOBEK

    IPC: E03B3/02 ,  E03B1/04

    CPC classification number: E03B3/02 ,  E03B1/041 ,  E03B2001/047

    Abstract: The invention relates to an apparatus for absorbing precipitation water from rain events, especially from driving rain events, and for water discharge by evaporation, wherein at least one textile element for absorbing water from rainwater drops and/or for discharging water by evaporation is provided, wherein the textile element is designed as or embodies a three-dimensional textile structure, with a first, water-permeable layer and a second, water-guiding layer, wherein these layers are connected to one another by means of water-guiding connecting threads, wherein the textile element is preferably fluidically connected via a water discharge conduit to a water collecting device and/or via a water supply conduit to a water supply device.

    Method for the Analogue Multiplication and/or Calculation of a Scalar Product with a Circuit Assembly, in Particular for Artificial Neural Networks
    25.
    发明公开
    Method for the Analogue Multiplication and/or Calculation of a Scalar Product with a Circuit Assembly, in Particular for Artificial Neural Networks 审中-公开

    公开(公告)号：US20230185530A1

    公开(公告)日：2023-06-15

    申请号：US17925048

    申请日：2021-05-10

    Applicant: Universität Stuttgart

    Inventor： Markus GRÖZING

    IPC: G06F7/523 ,  G06F7/544 ,  H03M1/82

    CPC classification number: G06F7/523 ,  G06F7/5443 ,  H03M1/82

    Abstract: The present invention relates to a method for the analogue multiplication and/or calculation of a scalar product, with a circuit assembly, which has a series circuit comprising a first FET and a second FET, or FET array, serving as a current source, a charging device, and a capacitance, which can be precharged by way of the charging device, and can be discharged by way of the series circuit of the first FET and the second FET, or FET array. The capacitance is initially precharged for the multiplication of a first value by a second value. The first value, encoded as the pulse width of a voltage pulse, is applied to the gate of the first FET, and the second value, encoded as the voltage amplitude, is applied to the gate of the second FET. By this means the capacitance is discharged, for the period of time of the voltage pulse, with a discharge current, which is specified by the voltage amplitude applied to the second FET. The result of the multiplication can then be determined from the residual charge or residual voltage of the capacitance. The method operates very energy-efficiently and can advantageously be used for the execution of calculations in neurons of an artificial neural network.

    Method and program product for operating a drive train
    26.
    发明授权
    Method and program product for operating a drive train 有权

    公开(公告)号：US11506280B2

    公开(公告)日：2022-11-22

    申请号：US16527801

    申请日：2019-07-31

    Applicant: Universität Stuttgart

    Inventor： Bernd Bertsche ,  Zeljana Beslic ,  Yvonne Gretzinger

    IPC: F16H61/12 ,  F16H59/68

    Abstract: A method for operating a drive train having a power generator, a mechanical power transmission device, and a power receiver wherein the power transmission device is monitored to detect mechanical damage and/or the development of mechanical damage to the power transmission device, wherein detected damage and/or detected damage development is localized and the power generator, the power transmission device, and/or the power receiver are/is controlled such that a mechanical load at the localized damage location and/or damage development location is selectively reduced. A program product including program code sections with which such a method is feasible when the program product is executed on a programmable controller, a computer, or other programmable device.

    CIRCUIT ARRANGEMENT WITH ACTIVE RECTIFIER CIRCUIT AND ITS APPLICATION IN A SYNCHRONOUS MACHINE
    27.
    发明申请
    CIRCUIT ARRANGEMENT WITH ACTIVE RECTIFIER CIRCUIT AND ITS APPLICATION IN A SYNCHRONOUS MACHINE 有权

    公开(公告)号：US20220029553A1

    公开(公告)日：2022-01-27

    申请号：US17381443

    申请日：2021-07-21

    Applicant: UNIVERSITÄT STUTTGART

    Inventor： David MAIER ,  Marco ZIMMER ,  Nejila PARSPOUR

    IPC: H02M7/217 ,  H02J50/10 ,  H02P25/022

    Abstract: The present invention relates to a circuit arrangement having an active rectifier circuit, in particular on a secondary side of an inductive energy transmission path. The circuit arrangement has a half or full bridge of power transistors for rectifying an AC voltage induced in an input inductor of the circuit arrangement. The power transistors are connected to the input inductor in such a way that an auxiliary voltage is split off from the induced AC voltage for switching the power transistors. As a result, even large currents, which result in a low output voltage, can be transmitted without endangering the operation of the rectifier circuit.

    DEVICE FOR GENERATING A VARIABLE ANGULAR MOMENTUM, IN PARTICULAR FOR SPACECRAFT ATTITUDE CONTROL
    28.
    发明申请
    DEVICE FOR GENERATING A VARIABLE ANGULAR MOMENTUM, IN PARTICULAR FOR SPACECRAFT ATTITUDE CONTROL 有权

    公开(公告)号：US20210331816A1

    公开(公告)日：2021-10-28

    申请号：US17242359

    申请日：2021-04-28

    Applicant: UNIVERSITÄT STUTTGART

    Inventor： Manfred EHRESMANN ,  Georg Heinrich HERDRICH ,  Stefanos FASOULAS

    IPC: B64G1/24 ,  B64G1/28

    Abstract: The present invention relates to a device for generating a variable angular momentum or torque, which has a container (1) partially filled with a magnetizable fluid (2) and a device for generating one or several rotating or wandering magnetic fields, with which the magnetizable fluid (2) in the container (1) can be made to continuously move on a closed orbit. The device for generating the rotating or wandering magnetic fields has several electric coils (4), whose coil axes lie in the orbital plane. This structure makes it possible to generate a variable angular momentum without mechanical moved parts or the necessity of external magnetic fields. For example, the device enables a simple and cost-effective spacecraft attitude control.

    Drilling device, method, and use
    30.
    发明授权
    Drilling device, method, and use 有权

    公开(公告)号：US10926358B2

    公开(公告)日：2021-02-23

    申请号：US15389244

    申请日：2016-12-22

    Applicant: Universität Stuttgart

    Inventor： Marwan Abdou-Ahmed ,  Rudolf Weber ,  Volkher Onuseit

    IPC: B23K26/00 ,  B23K26/388 ,  B23K26/06 ,  B23K26/382 ,  G02B5/18 ,  B23K26/082 ,  B23K26/067 ,  G02B27/42

    Abstract: The invention relates to a drilling device comprising a light source configured to provide a light beam and a diffractive beam propagation device having a substantially planar surface, wherein the light source is configured such that the light beam is incident on the planar surface of the diffractive beam propagation device, and wherein the diffractive beam propagation device is configured to propagate the light beam as one or more propagated beams such that the one or more propagated beams, at least when being integrated over time, surround an area with a substantially circular shape. A use of the drilling device for drilling a hole in a work piece and a method suitable for drilling a hole in a work piece are also provided.

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