Patent ID: 6708094
Filing Date: 2004-03-16
Classification: B60G

Abstract:
A vehicle suspension device for controlling the vertical deflection between a suspended mass and a non-suspended mass, comprising an elastic link mounted between the suspended mass and the non-suspended mass, the said elastic link including a spring and comprising a reversible electric actuator acting in parallel with the spring for controlling the relative-deflection movements between suspended mass and non-suspended mass, Zcr being the distance between a point on the suspended mass and a point on the non-suspended mass, the said device comprising means for controlling the electric actuator so that, from an observed variation of the distance Zcr, due to a deflection of the elastic link, the electric actuator develops a force F having a mass compensation component F1=CaÂ·MrÂ·Acr oriented in the direction of the acceleration Acr of the deflection of the non-suspended mass with respect to the suspended mass, with Mr being the non-suspended mass and Ca a coefficient, and having a damping component F2=âˆ’CvÂ·Vcr opposing the speed Vcr of the said deflection, Cv being a coefficient.