Patents by Inventor David Caredda

David Caredda 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: 12247996
    Abstract: A method for compensating sensor tolerances of accelerometers of a vehicle. The method includes following steps: recording of measurement signals of at least three similarly oriented accelerometers, calculation of an acceleration (ab,z) at a reference position in the spatial direction, which corresponds to the orientation of the accelerometers, low-pass filtering of the measurement signals, determination of tolerance parameters (cx, cy, cz) of each sensor via an optimization method with the aid of the calculated acceleration (ab,z) at the reference position, and calculation of the adjusted measurement signals from the recorded measurement signals and the tolerance parameters (cx, cy, cz).
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: March 11, 2025
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Markus Eisenbarth, David Caredda
  • Publication number: 20240246383
    Abstract: A method for level control of a motor vehicle, in which a target value for a floor level of the motor vehicle is calculated from a driving speed and a longitudinal acceleration and/or a lateral acceleration of the motor vehicle. With the aid of an active chassis, a target value for a lower floor level is provided at a higher longitudinal acceleration and/or lateral acceleration and a target value for a higher floor level is provided at a lower longitudinal acceleration and/or lateral acceleration. Dynamically adjusting the floor level to different acceleration situations of the motor vehicle enables a motor vehicle with a high level of driving safety and good driving comfort.
    Type: Application
    Filed: November 20, 2023
    Publication date: July 25, 2024
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Markus Eisenbarth, David Caredda, Jochen Liebold
  • Publication number: 20240246384
    Abstract: A method for controlling a chassis of a vehicle includes the steps of: detecting a vertical wheel acceleration of a wheel of the vehicle, detecting a vertical body acceleration of a body of the vehicle, determining a crest-dip indication by comparing the vertical wheel acceleration and the vertical body acceleration, and controlling the chassis on the basis of the crest-dip indication. The crest-dip indication indicates whether or not the vehicle is currently driving over a crest (K) or a dip (S). A system for controlling a chassis of a vehicle includes a wheel acceleration sensor for detecting a vertical wheel acceleration of a wheel of the vehicle, a body acceleration sensor for detecting a vertical body acceleration of a body of the vehicle, and a control unit.
    Type: Application
    Filed: January 23, 2024
    Publication date: July 25, 2024
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: David Caredda, Jochen Liebold, Markus Eisenbarth
  • Publication number: 20240246539
    Abstract: A method for operating an active roll support system of a motor vehicle, in which a roll moment distribution is regulated below a sideslip angle threshold on the basis of an actual grip reserve of a rear axle relative to a front axle of the motor vehicle. A wheel load is acquired for each of the wheels of the front axle and for each of the wheels of the rear axle and the acquired wheel loads are used as feedback variables in a control loop for regulating the roll moment distribution to calculate the actual grip reserve of the rear axle and compare it with a target grip reserve of the rear axle and from this determine a control deviation for adapting the roll moment distribution.
    Type: Application
    Filed: December 20, 2023
    Publication date: July 25, 2024
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: David Caredda, Jochen Liebold, Markus Eisenbarth
  • Publication number: 20230194565
    Abstract: A method for compensating sensor tolerances of accelerometers of a vehicle. The method includes following steps: recording of measurement signals of at least three similarly oriented accelerometers, calculation of an acceleration (ab,z) at a reference position in the spatial direction, which corresponds to the orientation of the accelerometers, low-pass filtering of the measurement signals, determination of tolerance parameters (cx, cy, cz) of each sensor via an optimization method with the aid of the calculated acceleration (ab,z) at the reference position, and calculation of the adjusted measurement signals from the recorded measurement signals and the tolerance parameters (cx, cy, cz).
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Markus Eisenbarth, David Caredda
  • Patent number: 10696121
    Abstract: Method for adjusting the damping force of shock absorbers connected between a vehicle body and a wheel at vehicle corners of a motor vehicle, wherein at least one damping force (FLIFT, FPITCH, FROLL) which is referred to a center of gravity of the vehicle body and is divided between axles of the vehicle and between the shock absorbers of the axles is determined as a function of at least one variable which represents a movement of the vehicle body and/or a movement of the respective wheel. For at least one of the damping forces which are referred to the center of gravity of the vehicle body, at least one division factor for the division of the damping forces is calculated between a front axle and a rear axle, and the division of the respective damping force (FLIFT, FPITCH, FROLL) is adapted on the basis of this division factor.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: June 30, 2020
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Jochen Liebold, David Caredda
  • Patent number: 10500917
    Abstract: A method for adjusting the damping force of shock absorbers, connected between a vehicle body and a wheel at vehicle corners of a motor vehicle, wherein at least one damping force which is referred to a center of gravity of the vehicle body and which is divided between the shock absorbers of the respective wheels of the motor vehicle is determined as a function of at least one variable which represents the movement of the vehicle body and/or a movement of the respective wheel. For at least one of the lifting, pitching and rolling modal directions, the respective damping force is determined as a function of a predefined, constantly maintained degree of damping of respective modal direction.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 10, 2019
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Jochen Liebold, David Caredda
  • Publication number: 20180154730
    Abstract: A method for adjusting the damping force of shock absorbers, connected between a vehicle body and a wheel at vehicle corners of a motor vehicle, wherein at least one damping force which is referred to a center of gravity of the vehicle body and which is divided between the shock absorbers of the respective wheels of the motor vehicle is determined as a function of at least one variable which represents the movement of the vehicle body and/or a movement of the respective wheel. For at least one of the lifting, pitching and rolling modal directions, the respective damping force is determined as a function of a predefined, constantly maintained degree of damping of respective modal direction.
    Type: Application
    Filed: November 16, 2017
    Publication date: June 7, 2018
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Jochen Liebold, David Caredda
  • Publication number: 20180154731
    Abstract: Method for adjusting the damping force of shock absorbers connected between a vehicle body and a wheel at vehicle corners of a motor vehicle, wherein at least one damping force (FLIFT, FPITCH, FROLL) which is referred to a center of gravity of the vehicle body and is divided between axles of the vehicle and between the shock absorbers of the axles is determined as a function of at least one variable which represents a movement of the vehicle body and/or a movement of the respective wheel. For at least one of the damping forces which are referred to the center of gravity of the vehicle body, at least one division factor for the division of the damping forces is calculated between a front axle and a rear axle, and the division of the respective damping force (FLIFT, FPITCH, FROLL) is adapted on the basis of this division factor.
    Type: Application
    Filed: November 29, 2017
    Publication date: June 7, 2018
    Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Jochen LIEBOLD, David CAREDDA