Patents by Inventor Leonard K. Johnson

Leonard K. Johnson 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: 10328915
    Abstract: Various methods of detecting or controlling vehicle stability are disclosed. Certain embodiments provide a method for performing hill hold control for a vehicle, a method for detecting a vehicle sliding into loss of control, and/or a method for controlling a vehicle's sliding into loss of control. Methods for detecting sliding into loss of control may include comparing the vehicle's longitudinal velocity gradient with a reference speed computed from wheel speed sensors inputs and/or detecting a lateral velocity of the vehicle and a longitudinal velocity of the vehicle when vehicle sliding is detected. Methods for control may include calculating a vehicle pitch angle from the lateral acceleration, the longitudinal acceleration, the yaw rate, the roll rate, and the pitch rate, calculating a longitudinal velocity gradient from the vehicle pitch angle, and/or calculating a sideslip angle.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 25, 2019
    Assignee: FORD GLOBAL TCHNOLOGIES, LLC
    Inventors: Jianbo Lu, Leonard K. Johnson, Joseph Carr Meyers
  • Publication number: 20160339884
    Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.
    Type: Application
    Filed: May 23, 2016
    Publication date: November 24, 2016
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Jianbo LU, Leonard K. JOHNSON, Joseph Carr MEYERS
  • Patent number: 9352731
    Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: May 31, 2016
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Jianbo Lu, Leonard K. Johnson, Joseph Carr Meyers
  • Publication number: 20140012477
    Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.
    Type: Application
    Filed: August 28, 2013
    Publication date: January 9, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Jianbo LU, Leonard K. JOHNSON, Joseph Carr MEYERS
  • Patent number: 8532906
    Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: September 10, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Jianbo Lu, Leonard K. Johnson, Joseph Carr Meyers
  • Publication number: 20120209490
    Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 16, 2012
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC.
    Inventors: Jianbo LU, Leonard K. JOHNSON, Joseph Carr MEYERS
  • Publication number: 20090187324
    Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 23, 2009
    Inventors: Jianbo Lu, Leonard K. Johnson, Joseph Carr Meyers