Suspension control device, vehicle comprising said device, production method thereof and associated program
AssigneePeugeot Citroen Automobiles SA
InventorFrancois Poilbout
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Abstract
The invention relates to a device for controlling the suspension of the body shell of a motor vehicle. According to the invention, the device comprises: a means (21) for calculating a set modal stress (F1) for the shock absorber as a function of at least one absolute modal body shell speed (Vmod), a means (34) for calculating a set modal stress (F2) for the shock absorber as a function of a relative modal body shell speed (Vmod2) in relation to the mid-plane of the wheels, a means (22) for detecting a bias on the vehicle, and a means (23) for calculating a weighting coefficient α for calculating a set modal stress (F) for the shock absorber using formula F=(1−α)·F1+α·F2.
Claims25
Control device for a suspension of a motor vehicle body on its wheels, having a computer having a means for calculating a control magnitude for an actuator of at least one variable damper of the suspension as a function of a setpoint modal force for the damper, calculated as a function of at least one body modal speed, estimated on the vehicle, characterized in wherein the computer has:
- a first means for calculating a first setpoint modal force F1 for the damper as a function of at least one absolute body modal speed, estimated on the vehicle,
- a second means for calculating a second setpoint modal force F2 for the damper as a function of at least one relative body modal speed with respect to the mid-plane of the wheels, estimated on the vehicle,
- a means for detecting at least one demand on the vehicle,
- a means for calculating a weighting coefficient α of the first setpoint force F1 and the second setpoint force F2, for calculating said setpoint modal force F of the damper using the formula
- F=(1−α)·F1+α·F2,
- where the weighting coefficient α is greater than or equal to 0 and lower than or equal to 1, is normally 0, and takes the value of 1 at least when the detected demand exceeds a prescribed threshold.
Dependencies are inferred from the claim text.