Patents by Inventor Stefan Maiwald

Stefan Maiwald has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11501767
    Abstract: The invention relates to a method for operating a motor vehicle having an operating device, which includes a speech recognition and language determination device. A recognition of a voice input of a user of the motor vehicle, and a check as to whether a language of the voice input corresponds to the first operating language take place in a first operating mode with a first operating language. Depending on a result of the checking process, a confidence value is assigned to the voice input, which describes a probability with which the language of the voice input is the second operating language. Depending on the assigned confidence value, a query signal is generated, which describes a request, understandable in a second operating language, to the user for indicating the operating mode to be set or the operating language to be set. In response to a received operating signal, the operating mode to be set or the operating language to be set are set.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: November 15, 2022
    Assignee: Audi AG
    Inventors: Christian Al Haddad, Stefan Maiwald
  • Patent number: 11150652
    Abstract: The invention relates to a method for operating a driver assistance system of a motor vehicle, wherein the motor vehicle is initially operated in a piloted or fully autonomous driving mode by a driver assistance device. Piloting data is provided by a control device of the motor vehicle, which describes at least one operating parameter of a motor vehicle system of the motor vehicle or the surroundings of the motor vehicle, and are navigation data. It is checked whether a totality of the provided piloting data meets a piloting condition, which stipulates a minimum requirement for the totality of the provided piloting data for implementing the piloted or fully autonomous driving mode. Upon failure to meet the piloting condition, an abort of the driving mode is determined and a driving situation signal is generated, which describes the piloting data and this signal is transmitted to a communication unit of a motor vehicle-external server device.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 19, 2021
    Assignee: Audi AG
    Inventors: Nicholas Schmitt, Stefan Maiwald
  • Patent number: 11031889
    Abstract: A drive device, having a first electric machine operable as a generator and a second electric machine operable as a motor, which are electrically connected to one another, so that the second electric machine is operable using electric energy provided by the first electric machine, wherein an energy accumulator for temporarily storing electric energy is electrically connected to the first electric machine and the second electric machine. It is provided in this case that the first electric machine and the second electric machine are electrically directly connected to one another via an intermediate circuit, wherein the energy accumulator is electrically connected to the intermediate circuit via a switch arrangement both directly and also indirectly via a voltage converter. The disclosure furthermore relates to a method for operating a drive device.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: June 8, 2021
    Assignee: AUDI AG
    Inventors: Matthias Hartmann, Stefan Maiwald
  • Patent number: 11027619
    Abstract: A charging station for the inductive charging of a battery of a motor vehicle. A primary resonant circuit for generating an electrical oscillation, the primary resonant circuit has a primary capacitor and a primary coil. The charging station includes a measuring device designed to excite the primary resonant circuit up to a predefinable voltage amplitude, then to interrupt the excitation of the primary resonant circuit and to evaluate the time function of the voltage amplitude of the primary resonant circuit after the interruption of the excitation of the primary resonant circuit.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: June 8, 2021
    Assignee: AUDI AG
    Inventors: Stefan Maiwald, Johann Schneider
  • Publication number: 20200349936
    Abstract: The invention relates to a method for operating a motor vehicle having an operating device, which includes a speech recognition and language determination device. A recognition of a voice input of a user of the motor vehicle, and a check as to whether a language of the voice input corresponds to the first operating language take place in a first operating mode with a first operating language. Depending on a result of the checking process, a confidence value is assigned to the voice input, which describes a probability with which the language of the voice input is the second operating language. Depending on the assigned confidence value, a query signal is generated, which describes a request, understandable in a second operating language, to the user for indicating the operating mode to be set or the operating language to be set. In response to a received operating signal, the operating mode to be set or the operating language to be set are set.
    Type: Application
    Filed: November 28, 2017
    Publication date: November 5, 2020
    Applicant: AUDI AG
    Inventors: Christian AL HADDAD, Stefan MAIWALD
  • Publication number: 20200274468
    Abstract: A drive device, having a first electric machine operable as a generator and a second electric machine operable as a motor, which are electrically connected to one another, so that the second electric machine is operable using electric energy provided by the first electric machine, wherein an energy accumulator for temporarily storing electric energy is electrically connected to the first electric machine and the second electric machine. It is provided in this case that the first electric machine and the second electric machine are electrically directly connected to one another via an intermediate circuit, wherein the energy accumulator is electrically connected to the intermediate circuit via a switch arrangement both directly and also indirectly via a voltage converter. The disclosure furthermore relates to a method for operating a drive device.
    Type: Application
    Filed: February 20, 2020
    Publication date: August 27, 2020
    Applicant: AUDI AG
    Inventors: Matthias HARTMANN, Stefan MAIWALD
  • Publication number: 20200117190
    Abstract: The invention relates to a method for operating a driver assistance system of a motor vehicle, wherein the motor vehicle is initially operated in a piloted or fully autonomous driving mode by a driver assistance device. Piloting data is provided by a control device of the motor vehicle, which describes at least one operating parameter of a motor vehicle system of the motor vehicle or the surroundings of the motor vehicle, and are navigation data. It is checked whether a totality of the provided piloting data meets a piloting condition, which stipulates a minimum requirement for the totality of the provided piloting data for implementing the piloted or fully autonomous driving mode. Upon failure to meet the piloting condition, an abort of the driving mode is determined and a driving situation signal is generated, which describes the piloting data and this signal is transmitted to a communication unit of a motor vehicle-external server device.
    Type: Application
    Filed: December 11, 2017
    Publication date: April 16, 2020
    Applicant: AUDI AG
    Inventors: Nicholas SCHMITT, Stefan MAIWALD
  • Publication number: 20200023859
    Abstract: The present application relates to a method for autonomous control of a motor vehicle by a control device, wherein the control device is coupled to at least one vehicle component for longitudinal control and/or lateral control of the motor vehicle and provides a regulator unit to generate at least one positioning signal for the at least one vehicle component on the basis of a controller model.
    Type: Application
    Filed: October 23, 2017
    Publication date: January 23, 2020
    Applicant: Audi AG
    Inventors: Nicholas SCHMITT, Stefan MAIWALD
  • Patent number: 10469017
    Abstract: A method for operating an electrical machine, wherein an inverter of the electrical machine is actuated by a pulse width modulation. In one case, it is provided that a pulse duty factor for the pulse width modulation is determined from a voltage value (d) that is dependent on the desired rotational speed as well as a time-dependent angle value (?). Embodiments of the invention further relate to an electrical machine.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 5, 2019
    Assignee: AUDI AG
    Inventor: Stefan Maiwald
  • Patent number: 10396626
    Abstract: An electric machine includes a housing, a shaft, which is rotatably supported in the housing, a stator, which is received in the housing, and a rotor, which is received in the housing and interacts with the stator. A planetary gear train, accommodated in the housing, connects the rotor and the shaft with one another.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: August 27, 2019
    Assignee: AUDI AG
    Inventor: Stefan Maiwald
  • Publication number: 20190168625
    Abstract: A charging station for the inductive charging of a battery of a motor vehicle. A primary resonant circuit for generating an electrical oscillation, the primary resonant circuit has a primary capacitor and a primary coil. The charging station includes a measuring device designed to excite the primary resonant circuit up to a predefinable voltage amplitude, then to interrupt the excitation of the primary resonant circuit and to evaluate the time function of the voltage amplitude of the primary resonant circuit after the interruption of the excitation of the primary resonant circuit.
    Type: Application
    Filed: August 3, 2017
    Publication date: June 6, 2019
    Applicant: AUDI AG
    Inventors: Stefan MAIWALD, Johann SCHNEIDER
  • Publication number: 20180331649
    Abstract: A method for operating an electrical machine, wherein an inverter of the electrical machine is actuated by a pulse width modulation. In one case, it is provided that a pulse duty factor for the pulse width modulation is determined from a voltage value (d) that is dependent on the desired rotational speed as well as a time-dependent angle value (?). Embodiments of the invention further relate to an electrical machine.
    Type: Application
    Filed: April 2, 2018
    Publication date: November 15, 2018
    Applicant: AUDI AG
    Inventor: Stefan MAIWALD
  • Patent number: 9742328
    Abstract: A method for controlling an operation of a multi-phase electric machine with a stator and a rotor is disclosed. The stator or the rotor includes permanent magnets, whereas the rotor or the stator includes a plurality of conductor bars interconnected by connecting elements of at least one circuit board and disposed within a magnetic field of the permanent magnets and having an internal inductance connected. The connecting elements are arranged outside the magnetic field and have an external inductance. Each phase includes at least one of the conductor bars. The multi-phase electric machine is controlled by regulating for each phase of the multi-phase electric machine at least one electrical quantity, which is dependent on the internal and external inductance of a respective phase, to a desired value.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: August 22, 2017
    Assignee: AUDI AG
    Inventor: Stefan Maiwald
  • Patent number: 9507444
    Abstract: A method for operates an operator control device for a motor vehicle. The operator control device has a rotary actuator which is rotatably mounted on a holding element, and a coding element, by detecting a first actual sensor value using coding of the coding element in the current rotational position of the rotary actuator. The method involves determining a current rotational angle between the rotary actuator and the holding element on the basis of the detected first actual sensor value, respectively providing at least one setpoint sensor value at predetermined rotational angles between the rotary actuator and the holding element, assigning the detected first actual sensor value to one of the at least one setpoint sensor valves, and adapting the first actual sensor value to the setpoint sensor value, assigned thereto, for the determination of the current rotational angle.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: November 29, 2016
    Assignee: AUDI AG
    Inventors: Stefan Maiwald, Joachim Krug
  • Publication number: 20150340976
    Abstract: A method for controlling an operation of a multi-phase electric machine with a stator and a rotor is disclosed. The stator or the rotor includes permanent magnets, whereas the rotor or the stator includes a plurality of conductor bars interconnected by connecting elements of at least one circuit board and disposed within a magnetic field of the permanent magnets and having an internal inductance connected. The connecting elements are arranged outside the magnetic field and have an external inductance. Each phase includes at least one of the conductor bars. The multi-phase electric machine is controlled by regulating for each phase of the multi-phase electric machine at least one electrical quantity, which is dependent on the internal and external inductance of a respective phase, to a desired value.
    Type: Application
    Filed: May 21, 2015
    Publication date: November 26, 2015
    Applicant: AUDI AG
    Inventor: STEFAN MAIWALD
  • Publication number: 20150340927
    Abstract: An electric machine includes a housing, a shaft, which is rotatably supported in the housing, a stator, which is received in the housing, and a rotor, which is received in the housing and interacts with the stator. A planetary gear train, accommodated in the housing, connects the rotor and the shaft with one another.
    Type: Application
    Filed: May 21, 2015
    Publication date: November 26, 2015
    Applicant: AUDI AG
    Inventor: Stefan Maiwald
  • Publication number: 20150253876
    Abstract: A method for operates an operator control device for a motor vehicle. The operator control device has a rotary actuator which is rotatably mounted on a holding element, and a coding element, by detecting a first actual sensor value using coding of the coding element in the current rotational position of the rotary actuator. The method involves determining a current rotational angle between the rotary actuator and the holding element on the basis of the detected first actual sensor value, respectively providing at least one setpoint sensor value at predetermined rotational angles between the rotary actuator and the holding element, assigning the detected first actual sensor value to one of the at least one setpoint sensor valves, and adapting the first actual sensor value to the setpoint sensor value, assigned thereto, for the determination of the current rotational angle.
    Type: Application
    Filed: June 12, 2013
    Publication date: September 10, 2015
    Inventors: Stefan Maiwald, Joachim Krug