Leydig, Voit & Mayer, Ltd.
Vehicle compass using telematics unit and vehicle sensor information
A software compass used during a GPS outage calculates vehicle heading and presents it upon request. The software compass gathers information from a yaw rate sensor, wheel steering angle sensor, wheel speed sensor, and PRNDL gear position sensor to calculate vehicle heading using a weighting algorithm. Because the yaw rate sensor data is a central factor in calculating vehicle heading, the quality of calibration of the yaw rate sensor is of importance. The disclosed calibration algorithm calculates the yaw rate bias and scale factors to calibrate the yaw rate sensor.
General Motors LLC
G G
G01S G01C
inventional inventional
Abhijit Chaminda Eray Sethu Craig
Patil Basanyake Yasan Madhavan Markyvech