TRAILER HEADING ANGLE USING VEHICLE WHEEL SPEED SENSORS

摘要

A system and method of calculating a heading angle for a trailer that is being backed by a vehicle. A trailer backup assist control module, in communication with a hitch angle detecting apparatus, receives a hitch angle and determines displacement of left and right vehicle wheels using information supplied by vehicle wheel speed sensors while the vehicle is backing the trailer. A vehicle heading angle is determined using left and right wheel displacement information and a known vehicle track width. A trailer heading angle is then calculated using the vehicle heading angle and the hitch angle.

主权项

1. A method of calculating a trader heading angle for a trailer being backed by a vehicle having a trailer backup assist control module and a hitch angle detecting apparatus, comprising:
receiving a hitch angle; determining displacement of left and right vehicle W heels using information supplied by vehicle wheel speed sensor information while the vehicle is backing the trailer; calculating a vehicle heading angle using the left and right wheel displacements and a vehicle track width; and calculating a trailer heading angle using the vehicle heading angle and the hitch angle.