System and method of vehicle speed control having vehicle speed limit control and speed increase rate control
US8818677B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 23, 2008 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Oct 21, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2720/106
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
If a condition for finishing speed limit control is satisfied, a gradient of a slope of the road is estimated based on a steady component of the longitudinal acceleration of the vehicle, and a correction factor is computed based on the slope gradient of the road, while a target acceleration of the vehicle is computed based on the vehicle speed. Then, a target vehicle speed is computed by adding the target vehicle speed of the last cycle to the product of the correction factor, target acceleration and the cycle time of the control, and the braking or driving force of each wheel is controlled so that the vehicle speed becomes equal to the target vehicle speed. In this manner, a passenger of the vehicle is prevented from feeling uncomfortable about the speed increase after the completion of the vehicle speed limit control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.