Patents by Inventor Shiva N. Sivashankar

Shiva N. Sivashankar 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: 5878357
    Abstract: A method is provided for a vehicle yaw rate estimation using two accelerometers and a steer angle sensor. The new method combines two complimentary approaches to yaw rate estimation using accelerometers. A kinematic yaw rate estimate is weighted with a vehicle lateral acceleration at the center of gravity, and steering angle and vehicle forward speed are incorporated into a Kalman filter for estimating vehicle yaw rate based upon the kinematic yaw rate estimate, the lateral acceleration at the center of gravity, the vehicle steering angle, and the vehicle forward speed. The method incorporates use of either one or two accelerometers.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: March 2, 1999
    Assignee: Ford Global Technologies, Inc.
    Inventors: Shiva N. Sivashankar, Ali Galip Ulsoy, Davorin D. Hrovat