Method for controlling driving stability

Driving stability control system for a vehicle, comprising:

• a control device for controlling the vehicle speed;
• a steering angle detection device for detecting a steering angle of a steering wheel of the vehicle;
• a lateral acceleration detection device for determining a lateral acceleration of the vehicle;
• a computing device for computing a stable limit speed from the determined quantities steering angle of the steering wheel and lateral acceleration of the vehicle;
• a speed detection device for detecting a current vehicle speed, wherein said control device controls the vehicle speed to a calculated stable limit speed whenever the vehicle speed exceeds the stable limit speed;
• and
• wherein the computing devise determines the stable limit speed according to the recursive relation
• v
• limit
• =
• l
• *
• a
• q
• δ
• -
• Δδ
• tol
• -
• a
• q
• *
• EG
• where
• δ is a steering angle of the steering wheel at the front wheels
• ξ is wheel base
• EG is a self-steering gradient of the vehicle
• αq is a vehicle lateral acceleration
• υlim it is a stable limit speed
• Δδtol is a tolerated steering angle deviation compared to the linear case.