Method for haptic feedback control

A method for haptic feedback control comprising:

• transmitting, by a control device, a haptic feedback to a finger of a user in a zone of movement of said finger,
• wherein said control device comprises:
• a backing plate for transmitting the haptic feedback to the finger of the user in the zone of movement of said finger,
• a sensor for sensing a trajectory of said finger in said zone,
• a first actuator and a second actuator connected to said plate to generate the haptic feedback in said zone as a function of a signal originating from said sensor, the first actuator being capable of driving said plate in a first drive direction and the second actuator being capable of driving said plate in a second driving direction, substantially perpendicular to and coplanar with the first direction,
• a deformable connecting means disposed between each of said first and second actuators and said backing plate for allowing displacement of said backing plate relative to each of said first and second actuators in non-driving directions thereof, and
• a processing unit connected to said sensor to determine the direction of an elementary movement of said finger based on the signals originating from said sensor, the processing unit being configured to control independently the first actuator and the second actuator as a function of the components of said elementary movement according to the first drive direction and the second drive direction;
• determining the direction of an elementary movement of the trajectory of said finger;
• breaking down the elementary movement into components according to said first and second drive directions;
• and
• independently controlling said first actuator and said second actuator as a function of the components of said elementary movement to drive said plate in translation so that the result of a vibratory effect generated by said actuators is felt by said finger in a direction substantially perpendicular to and coplanar with the direction of said elementary movement.