| 摘要 |
A method identifies, for a vehicle, a low friction surface from a road surface with a slope. With the vehicle at standstill, the vehicle ignition is switched on. A normal load for the vehicle is calculated. It is determined if the vehicle is moving, and if the vehicle is moving, a vehicle load is calculated using suspension information from the vehicle. A road slope angle is calculated based on the calculated vehicle load and calculated normal load. A normal slope angle is calculated and is compared to the calculated road slope angle to determine if the vehicle is on a low friction surface or on a sloped surface. In accordance with another aspect of an embodiment, a method determines whether a trailer is coupled to a vehicle. |
| 主权项 |
1. A method of identifying, for a vehicle, a low friction surface from a road surface with a slope, the method comprising the steps of: with the vehicle at standstill, turning the vehicle ignition switched on, calculating, in a control unit, a normal load for the vehicle, determining if the vehicle remains at standstill or is moving, and if the vehicle is moving, calculating, in the control unit, a vehicle load using suspension information obtained from the vehicle, calculating, in the control unit, a road slope angle based on the calculated vehicle load and calculated normal load, calculating, in the control unit, a normal slope angle, and comparing, in the control unit, the normal slope angle to the calculated road slope angle to determine if the vehicle is on a low friction surface or on a sloped surface. |
