Patents by Inventor Tony Gustafsson

Tony Gustafsson 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: 9643604
    Abstract: A driver assist arrangement includes a first yaw rate controller, a hazard evaluation unit, a driver intention evaluation unit, and a second yaw rate controller. The first yaw rate controller is configured to control a yaw rate of a vehicle hosting the arrangement by comparing an expected yaw rate with an actual yaw rate, and in response thereto selectively apply brakes of respective wheels of the host vehicle. The second yaw rate controller is configured to intervene in the control of the first yaw rate controller in case the evaluated risk of an accident is above a threshold value and occurrence of an avoidance maneuver initiated by the driver is detected. A vehicle including a driver assist arrangement and a method of assisting a driver of a vehicle are also provided.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: May 9, 2017
    Assignee: Volvo Car Corporation
    Inventors: Tony Gustafsson, Mats Jonasson
  • Publication number: 20160368503
    Abstract: The present disclosure relates to a method and arrangement for estimating a friction coefficient (?i) between tires of a wheeled two-axis two-track road vehicle and the ground. If the longitudinal velocity ?x of the vehicle is above a first threshold ?xthres and the wheel angle ?f and/or the yaw rate ?z are/is below a second threshold ?thres/?zthres, a positive torque is applied to both wheels on a first axle and an and opposite, negative torque, to both wheels on a second axle while following driver requested longitudinal vehicle acceleration (ax). Wheel speeds ?i are measured and tire forces (fi) estimated. The friction coefficient (?i) between the tires and the ground are estimated from the measured wheel speeds ?i and the estimated tire forces (fi). The estimated friction coefficient (?i) is made available to other vehicle systems.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 22, 2016
    Inventors: Mats JONASSON, Tony GUSTAFSSON, Anton ALBINSSON, Frederik Hans BRUZELIUS
  • Publication number: 20160352290
    Abstract: This disclosure provides a circuit for linearizing an output signal Sout produced by a non-linear component based on an input signal x(n). The circuit comprises a primary pre-distorter module configured to generate a pre-distorted signal y(n) based on the input signal x(n) and a primary pre-distortion function parameterized by a pre-distortion parameter ? and to feed the pre-distorted signal y(n) to the non-linear component. The circuit comprises an estimation module. The estimation module is configured to receive samples z(n) of the output signal Sout, and to determine the pre-distortion parameter ?. The estimation module comprises a secondary pre-distorter module configured to generate a secondary pre-distorter output signal r(n) based on a secondary pre-distortion function and the samples z(n) of the output signal Sout.
    Type: Application
    Filed: November 22, 2014
    Publication date: December 1, 2016
    Inventors: Bjorn Gavert, Tony Gustafsson
  • Publication number: 20160244068
    Abstract: A method, arrangement and system are described for estimating one or more vehicle cornering stiffness parameters (cf, cr) in a linear vehicle operating region. The method includes reading sensor data representative of at least vehicle (1) longitudinal velocity (vx), vehicle lateral acceleration (ay), vehicle yaw rate (?z) and vehicle steering angle (?), determining from the read sensor data if the cornering stiffness parameters (cf, cr) are observable, and if so providing an estimate of the cornering stiffness parameters (cf, cr) using a bicycle model that includes a model of tire relaxation dynamics.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 25, 2016
    Inventors: Mikael THOR, Tony GUSTAFSSON
  • Publication number: 20150266474
    Abstract: A driver assist arrangement includes a first yaw rate controller, a hazard evaluation unit, a driver intention evaluation unit, and a second yaw rate controller. The first yaw rate controller is configured to control a yaw rate of a vehicle hosting the arrangement by comparing an expected yaw rate with an actual yaw rate, and in response thereto selectively apply brakes of respective wheels of the host vehicle. The second yaw rate controller is configured to intervene in the control of the first yaw rate controller in case the evaluated risk of an accident is above a threshold value and occurrence of an avoidance maneuver initiated by the driver is detected. A vehicle including a driver assist arrangement and a method of assisting a driver of a vehicle are also provided.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventors: Tony GUSTAFSSON, Mats JONASSON
  • Patent number: 9079462
    Abstract: The invention provides a system, a method and a computer program of estimating tire pressure deviations in a number of tires of a vehicle wherein a plurality of possible constellations of one or more pressure deviating tires exists. The system comprises a plurality of pressure deviation detectors (11), wherein each of the detectors (11) is adapted to detect at least one of the pressure deviating tire constellations. The system further comprises an output unit (12) which is adapted to provide for a warning if one of the pressure deviation detectors (11) detects at least one of the pressure deviating tire constellations.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: July 14, 2015
    Assignee: Nira Dynamics AB
    Inventors: Peter Lindskog, Anders Stenman, Tony Gustafsson, Peter Hall
  • Patent number: 8825267
    Abstract: A method, system and computer program product for detecting a tire pressure deviation in a tire of a vehicle by determining tire pressure indicating data indicative of a tire pressure condition of the tire and determining tire pressure deviation data indicative of a tire pressure deviation in the tire.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: September 2, 2014
    Assignee: Nira Dynamics AB
    Inventors: Markus Gerdin, Henrik Nilsson, Tony Gustafsson, Mats Löfgren
  • Patent number: 8554498
    Abstract: The invention is directed to a system, a method and a computer program including program code for carrying out the method, when executed on a processing system, of estimating a tire pressure deviation of a vehicle's tire (2). The system includes an input section (100) adapted to receive as an input signal a vehicle signal, a calculation section (200) adapted to calculate at least one shape factor of a resonance peak associated with the vehicle signal spectrum (2) on the basis of the input signal, and a determination section (300) adapted to derive, depending on said at least one shape factor, a tire pressure signal indicative of a tire pressure deviation within the vehicle's tire (2).
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: October 8, 2013
    Assignee: Nira Dynamics AB
    Inventors: Fredrik Gustavsson, Anders Stenman, Tony Gustafsson, Peter Lindskog, Peter Hall, Urban Forssell
  • Publication number: 20110231051
    Abstract: A method, system and computer program product for detecting a tire pressure deviation in a tire of a vehicle by determining tire pressure indicating data indicative of a tire pressure condition of the tire and determining tire pressure deviation data indicative of a tire pressure deviation in the tire.
    Type: Application
    Filed: March 16, 2007
    Publication date: September 22, 2011
    Inventors: Markus Gerdin, Henrik Nilsson, Tony Gustafsson, Mots Löfgren
  • Publication number: 20100217471
    Abstract: A method, system and computer program product for detecting a tire pressure deviation in a tire of a vehicle by determining tire pressure indicating data indicative of a tire pressure condition of the tire and determining tire pressure deviation data indicative of a tire pressure deviation in the tire.
    Type: Application
    Filed: March 16, 2007
    Publication date: August 26, 2010
    Inventors: Anders Stenman, Urban Forssell, Peter Lindskog, Tony Gustafsson
  • Publication number: 20100191483
    Abstract: The invention is directed to a system, a method and a computer program including program code for carrying out the method, when executed on a processing system, of estimating a tire pressure deviation of a vehicle's tire (2). The system comprises an input section (100) adapted to receive as an input signal a vehicle signal, a calculation section (200) adapted to calculate at least one shape factor of a resonance peak associated with the vehicle signal spectrum (2) on the basis of the input signal, and a determination section (300) adapted to derive, depending on said at least one shape factor, a tire pressure signal indicative of a tire pressure deviation within the vehicle's tire (2).
    Type: Application
    Filed: March 16, 2007
    Publication date: July 29, 2010
    Inventors: Fredrik Gustavsson, Anders Stenman, Tony Gustafsson, Peter Lindskog, Peter Hall, Urban Forssell
  • Patent number: 6845164
    Abstract: Device and method for separating a mixture of source signals to regain the source signals, the device and method being based on measured signals, the invention comprises: bringing each measured signal to a separation structure including an adaptive filter, the adaptive filter comprising filter coefficients; using a generalized criterion function for obtaining the filter coefficients, the generalized criterion function comprising cross correlation functions and a weighting matrix, the cross correlation functions being dependent on the filter coefficients; estimating the filter coefficients, the resulting estimates of the filter coefficients corresponding to a minimum value of the generalized criterion function; and updating the adaptive filter with the filter coefficients.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: January 18, 2005
    Assignee: Telefonaktiebolaget LM Ericsson (PUBL)
    Inventor: Tony Gustafsson
  • Publication number: 20020051500
    Abstract: Device and method for separating a mixture of source signals to regain the source signals, the device and method being based on measured signals, the invention comprises: bringing each measured signal to a separation structure including an adaptive filter, the adaptive filter comprising filter coefficients; using a generalized criterion function for obtaining the filter coefficients, the generalized criterion function comprising cross correlation functions and a weighting matrix, the cross correlation functions being dependent on the filter coefficients; estimating the filter coefficients, the resulting estimates of the filter coefficients corresponding to a minimum value of the generalized criterion function; and updating the adaptive filter with the filter coefficients.
    Type: Application
    Filed: September 7, 2001
    Publication date: May 2, 2002
    Inventor: Tony Gustafsson