hybrid haptic interface haptic rendering improves

haptic interface comprising: - a knob (1) rotatably movable by a user, - an element of interaction (12) with a magneto-rheological fluid, secured to the knob (1), - means for measuring a current position (14) of button (1), - a brake having a magneto-rheological fluid and a system for generating (6) a magnetic field in said fluid, - a rotary electric motor having a shaft for rotating the button, - a control unit generating commands to said magnetic field generating system and to the engine, and - detection means of the action for the user on the button, the control unit controlling the generation (6) a magnetic field and / or the motor on the basis of information obtained from the detection means.