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).
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Patent number: 11501767Abstract: 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: GrantFiled: November 28, 2017Date of Patent: November 15, 2022Assignee: Audi AGInventors: Christian Al Haddad, Stefan Maiwald
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Patent number: 11150652Abstract: 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: GrantFiled: December 11, 2017Date of Patent: October 19, 2021Assignee: Audi AGInventors: Nicholas Schmitt, Stefan Maiwald
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Patent number: 11031889Abstract: 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: GrantFiled: February 20, 2020Date of Patent: June 8, 2021Assignee: AUDI AGInventors: Matthias Hartmann, Stefan Maiwald
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Patent number: 11027619Abstract: 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: GrantFiled: August 3, 2017Date of Patent: June 8, 2021Assignee: AUDI AGInventors: Stefan Maiwald, Johann Schneider
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Publication number: 20200349936Abstract: 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: ApplicationFiled: November 28, 2017Publication date: November 5, 2020Applicant: AUDI AGInventors: Christian AL HADDAD, Stefan MAIWALD
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Publication number: 20200274468Abstract: 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: ApplicationFiled: February 20, 2020Publication date: August 27, 2020Applicant: AUDI AGInventors: Matthias HARTMANN, Stefan MAIWALD
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Publication number: 20200117190Abstract: 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: ApplicationFiled: December 11, 2017Publication date: April 16, 2020Applicant: AUDI AGInventors: Nicholas SCHMITT, Stefan MAIWALD
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Publication number: 20200023859Abstract: 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: ApplicationFiled: October 23, 2017Publication date: January 23, 2020Applicant: Audi AGInventors: Nicholas SCHMITT, Stefan MAIWALD
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Patent number: 10469017Abstract: 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: GrantFiled: April 2, 2018Date of Patent: November 5, 2019Assignee: AUDI AGInventor: Stefan Maiwald
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Patent number: 10396626Abstract: 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: GrantFiled: May 21, 2015Date of Patent: August 27, 2019Assignee: AUDI AGInventor: Stefan Maiwald
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Publication number: 20190168625Abstract: 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: ApplicationFiled: August 3, 2017Publication date: June 6, 2019Applicant: AUDI AGInventors: Stefan MAIWALD, Johann SCHNEIDER
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Publication number: 20180331649Abstract: 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: ApplicationFiled: April 2, 2018Publication date: November 15, 2018Applicant: AUDI AGInventor: Stefan MAIWALD
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Patent number: 9742328Abstract: 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: GrantFiled: May 21, 2015Date of Patent: August 22, 2017Assignee: AUDI AGInventor: Stefan Maiwald
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Patent number: 9507444Abstract: 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: GrantFiled: June 12, 2013Date of Patent: November 29, 2016Assignee: AUDI AGInventors: Stefan Maiwald, Joachim Krug
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Publication number: 20150340976Abstract: 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: ApplicationFiled: May 21, 2015Publication date: November 26, 2015Applicant: AUDI AGInventor: STEFAN MAIWALD
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Publication number: 20150340927Abstract: 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: ApplicationFiled: May 21, 2015Publication date: November 26, 2015Applicant: AUDI AGInventor: Stefan Maiwald
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Publication number: 20150253876Abstract: 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: ApplicationFiled: June 12, 2013Publication date: September 10, 2015Inventors: Stefan Maiwald, Joachim Krug