Understeer and oversteer detector for a motor vehicle
AssigneeJtekt Europe
InventorsAndré MICHELIS, Christophe RAVIER, Pascal MOULAIRE
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Abstract
A method for detecting a situation of loss of grip of a vehicle provided with a steering system operated by a steering wheel, said method being in that it comprises a step (a) of evaluating a first indicator of loss of grip (P1) comprising calculating, as the first indicator of loss of grip (P1), the partial derivative ( P 1 = ∂ ψ . ∂ α ) , relative to a variable (α) representative of the angular position of the steering wheel, of a driving parameter which is representative of the yaw rate ({dot over (ψ)}) of the vehicle.
Claims8
A method for detecting a situation of loss of grip of a vehicle provided with a steering system operated by a steering wheel, said method comprises a step (a) of evaluating a first indicator of loss of grip (P1) comprising calculating, as the first indicator of loss of grip (P1), the partial derivative
- (
- P
-
-
- 1
- =
- ∂
- ψ
- .
- ∂
- α
- )
- ,
- relative to a variable (α) representative of the angular position of the steering wheel, of a driving parameter which is representative of the yaw rate ({dot over (ψ)}) of the vehicle.
Dependencies are inferred from the claim text.