Vehicle steering system, vehicle including the same and method for turning wheel of vehicle
US7832522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2007 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Nov 28, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D6/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle steering system includes a steering wheel, a steering angle detector that detects a steering angle of the steering wheel, a steering angular speed calculator that calculates a steering angular speed of the steering wheel, a vehicle speed detector that detects a vehicle speed, a target rudder angle finding device, a modifying device, and an actuator. The target rudder angle finding device finds a target rudder angle based on the steering angle, the steering angular speed and the vehicle speed. The target rudder angle is a sum of a proportional term proportional to the steering angle and a differential term proportional to the steering angular speed. The modifying device modifies the differential term when the steering angular speed is negative to reduce a value of the differential term from that when positive. The actuator turns at least one wheel of the vehicle in accordance with the target rudder angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.