Patent ID: 6092815
Filing Date: 2000-07-25
Classification: B60G

Abstract:
A controllable suspension system in an active chassis in a vehicle comprising:left front, left rear, right front, and right rear suspension struts, each of the suspension struts including a passive spring element, an adjustable supporting unit and a transducer, the passive spring element being located between a wheel of the vehicle and a body of the vehicle, the adjustable supporting unit being provided for the spring element, and the transducer being provided for detecting at least one of a plurality of state variables of the suspension system, an actual roll moment distribution between a front axle and a rear axle of the vehicle being determinable from the plurality of state variables;an input element for predefining a desired roll moment distribution between the front and rear axles of the vehicle; anda control unit for generating control signals for acting on the suspension system as a function of the desired roll moment distribution, control signals for the left front and right rear suspension struts being formed according to the equation:R.sub.vl =R.sub.hr =+K.sub.T *[MW.sub.V *(1-T.sub.soll)-MW.sub.H *T.sub.soll ]and control signals for the right front and the left rear suspension struts being formed according to the control equation:R.sub.vr =R.sub.hl =-K.sub.T *[MW.sub.V *(1-T.sub.soll)-MW.sub.H *T.sub.soll ]where R.sub.vl denotes the control signal for the left front suspension strut, R.sub.hr denotes the control signal for the right rear suspension strut, R.sub.vr denotes the control signal for the right front suspension strut, R.sub.hl denotes the control signal for the left rear suspension strut, K.sub.T denotes a gain factor, MW.sub.V denoted a roll moment on the front axle, MW.sub.H denotes a roll moment on the rear axle, and T.sub.soll denotes the desired roll moment distribution.