Vehicle-trailer backing up system using active front steer
US7154385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jun 29, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/027
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle-trailer back-up control system that employs an active front steer sub-system. The system includes a smart hitch controller that receives a vehicle speed signal and a hand-wheel angle signal, and calculates a hitch angle command signal. The system further includes a hitch angle sensor that measures the hitch angle between the vehicle and the trailer that is compared to the hitch angle command signal to generate a hitch angle error signal. A PID control unit receives the hitch angle error signal, and generates a corrected road wheel angle signal based on proportional and derivative gains. The corrected road wheel angle signal is used to generate a motor angle signal that is applied to a steering actuator to be combined with the steering angle signal to generate the front wheel steering signal during a back-up maneuver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.