Control method of a power steering system for a vehicle having two steered axles
US9452779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Dec 27, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/144
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A power steering system includes a first steering device which controls the steering of the first wheels of the vehicle according to a first steering angle α1 and includes a first actuator capable of providing a steering assistance effort, a second steering device including a second actuator controlled by a controller as a function of a parameter related to the steering wheel movement, and controlling the steering of the second wheels, according to a second steering angle α2. In normal operation of the power steering system, α2 is set according to a first rule depending on the first steering angle α1. In case the steering wheel torque is greater than a predetermined threshold, the second steering device is operated in a forced mode by setting the second steering angle according to a rule depending on the first steering angle and taking into account at least one different or additional data, in order to cause an offset-oversteering of the second wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.