Trailer backup assist system

摘要

The trailer backup assist system has a human machine interface coupled to a controller having a setup module, a calibration module, an activation module and a control module configured to receive trailer measurements, apply trailer measurements, activate and control vehicle systems to calibrate and implement a curvature control algorithm that controls the reverse movement of the vehicle-trailer combination in a manner consistent with a driver request.

主权项

1. A trailer backup assist system for use on a vehicle having an attached trailer comprising:
a human machine interface device in communication with a controller; a setup module receiving trailer measurements at the controller; a calibration module applying the trailer measurements to calibrate a curvature control algorithm associated with the trailer backup assist system and to calibrate a hitch angle sensor associated with the trailer backup assist system; an activation module for activating a steering system on the vehicle during reverse movement of the vehicle-trailer combination; a trailer backup steering input apparatus having a rotatable control element positionable at a zero curvature command position defined by backward movement of the trailer along a substantially straight path defined by a centerline longitudinal axis of the trailer and positionable at positions within opposing rotational ranges of motion relative to the zero curvature commanding position and generating driver request for a trailer path curvature command that is a function of at least one of an amount of rotation of the rotatable control element with respect to the zero curvature commanding position, a rate movement of the rotatable control element, and a direction of movement of the rotatable control element with respect to the zero curvature commanding position; and a control module to receive the driver request, implement the curvature control algorithm, provide steering commands to the steering system to control the reverse movement of the vehicle-trailer combination in a manner consistent with the driver request, and implement a jackknife counter-measure by altering at least one vehicle operating parameter that increases a radius of a curvature path of the trailer and inhibits a decrease in the radius of the curvature path of the trailer, the steering commands during reverse movement of the vehicle-trailer combination are limited to those provided by the control module.