Control device for the active steering of a vehicle

1. A control device for an active steering of a vehicle comprising a driving differential that is positioned between a steering wheel and steering control means, said differential which furthermore receives at a first input a counter-steering command supplied by a turn correction motor, wherein said steering wheel is linked to a second input of said differential by non-return means preventing any force feedback from said differential to said steering wheel.

2. The control device according to claim 1 , wherein said non-return means comprise a system with a pinion and a worm positioned between said steering wheel and said second input of said differential.

3. The control device according to claim 1 , wherein said non-return means comprise a screw-nut system coupled with a rotary/linear motion converter.

4. The control device according to claim 3 , wherein the rotary/linear motion converter is a crank-connecting rod system.

5. The control device according to claim 1 , wherein said non-return means comprise a transfer gearbox comprising an idler shaft with two pinions, a first pinion being coupled with said steering wheel and said second pinion being coupled with said second differential input, said idler shaft being able to be activated additionally by a counter-torque motor activated by said control computer.

6. The control device according to claim 5 , wherein said counter-torque motor is linked to said idler shaft by means of damping means.

7. The control device according to claim 1 , wherein said device comprises power cut braking means positioned between said first input and said turn correction motor.