Suspension Control Device, Vehicle Comprising Said Device, Production 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 (31) for calculating a relative modal body shell speed (Vmod2) in relation to the mid-plane of the wheels, a second means (34, 22) for calculating the set modal stress (cφ2, cθ2, Fz2) of the damper as a function of the relative modal body shell speed (Vmod2) in relation to the mid-plane of the wheels. The control value (ER) comprises a determined shock absorption principle from among a plurality of different shock absorption principles (ER) that impose the force (FA) of the damper as a function of the travel speed (VDEB) thereof.
Claims32
Suspension control device for a motor vehicle body on its wheels (A), having a computer (CSS) adapted to calculate a control magnitude (ER) for an actuator (M) of at least one variable damper (AM) of the suspension (S) as a function of at least one modal setpoint force for the body, said computer (CSS) having
- a first means for calculating at least one relative body modal velocity (Vmod2) with respect to the mid-plane of the wheels,
- a second means for calculating the modal setpoint force (cφ2, cθ2, Fz2) for the damper, as a function of the relative body modal velocity (Vmod2) with respect to the mid-plane of the wheels,
- wherein
- the control magnitude (ER) is a set damping law from among a plurality of different damping laws (ER) that set the damper force (FA) as a function of its displacement speed (VDEB).
Suspension control device according to the preceding claim, characterized in that it comprises a wheel-to-body displacement sensor (CAP-DEB) at least for one wheel, a means for calculating the displacement speed (VDEB) of the damper from the displacement of the corresponding wheel, a means for calculating a setpoint force (FA1) for the damper (AM) as a function of said at least one modal setpoint force, and a means for calculating the control magnitude (ER) for the actuator (M) as a function of this setpoint force (FA1) and the wheel displacement speed (VDEB).
Dependencies are inferred from the claim text.