Patent ID: 7949445

Claim:
Suspension control device for a motor vehicle body on its wheels (A), having a computer (CSS) configured 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, wherein the control magnitude (ER) is a damping law that sets a damper force (FA) for the damper (AM) as a function of a displacement speed (VDEB) of at least one of the wheels (A), said computer (CSS) having first means for calculating at least one absolute body modal velocity (V mod1 ) of at least one of the wheels (A), second means for calculating a first modal setpoint force (F 1 ) for the damper, as a function of the absolute body modal velocity (V mod1 ) of the wheel (A), third means for calculating at least one relative body modal velocity (V mod2 ) of the wheel (A) with respect to the mid-plane of the wheels, fourth means for calculating a second modal setpoint force (F 2 ) for the damper, as a function of the relative body modal velocity (V mod2 ) with respect to the mid-plane of the wheels, fifth means for calculating a setpoint force (F) as a function of the first modal setpoint force (F 1 ), the second modal setpoint force (F2), and a weighting coefficient (α), using the formula: F=α·F 2 +(1−α)· F 1 wherein the control magnitude (ER) for the actuator (M) of the damper (AM) is selected from among a plurality of different damping laws (ER), wherein each of said damping laws (ER) sets the damper force (FA) for the damper (AM) as a function of the displacement speed (VDEB) of the wheel (A), by selecting the damping law (ER) closest to the point having the coordinates (displacement speed (VDEB), setpoint force (F)).