Control of a suspension system of a vehicle provided with four semi-active suspensions

A method for controlling four semi-active suspensions (5) of a vehicle (1) comprising the steps of: determining, for each semi-active suspension (5), a first and a second signal representative of the acceleration and speed of the sprung mass (Msi); determining, for a pair of semi-active suspensions (5) arranged on one side (Dx,Sx) of the vehicle (1) a third and a four signal representative of the acceleration and pitch speed (1); calculating for each semi-active suspension (5), a first damping coefficient (c H i ) as a function of the difference between the first and second signal squared; calculating for each semi-active suspension (5), a second damping coefficient (c P i ) as a function of the difference between the third and the four signal squared; for each semi-active suspension (5), comparing the first (c H i ) and the second damping coefficient (c P i ) for determining the higher coefficient; applying to each force generator device (7), an electronic control signal (Sci) indicative of the respective high damping coefficient (c T i ).