A system for the active control of a motor vehicle differential

摘要

The system comprises: devices (S1-S5) operable to provide signals indicative of the angle of rotation ( delta ) of the steering wheel, the speed (V) and the yaw rate ( PSI /<.>) of the vehicle, at well as the longitudinal acceleration (ax) and transverse acceleration (ay) of the vehicle on the basis of which a reference yaw rate ( PSI /<.>ref) is determined. A first yaw torque control signal ( DELTA Ty1) is produced on the basis of a predetermined mathematical model of the behaviour of the motor vehicle and as a function of the determined reference value of the yaw rate ( PSI /<.>ref). Control devices (F2) generate a second yaw torque control signal ( DELTA Ty2) as a predetermined function of the longitudinal acceleration (ax) of the vehicle. A control circuit (DC) generates electrical piloting signals for actuator devices (A1, A2) of the differential (D) as a function of the first and second yaw rate control signals ( DELTA Ty1, DELTA Ty2). <IMAGE>