Method and device for controlling an electric actuator activating a functional system

Device for controlling an electric actuator for activating a functional system, especially an automotive vehicle secondary brake, having a control member actuatable by a user so as to govern the powering of the actuator, the device comprising:

• a) means for estimating the movements of the control member, in terms of direction and amplitude, along a travel thereof between extreme positions of control of the actuator, and
• b) means for analyzing these movements so as to derive therefrom a cue for controlling means for powering the actuator so as to supply the latter with a quantity of current corresponding to the movement of the control member, as determined by these means of analysis on the basis of a predetermined correspondence law stored in the latter means and of means for aggregating the successive movements of the actuator during its various controls, and updated after each new control of the actuator by these means of analysis, so as to slave the position of the actuator to the position of the control member;
• and
• means for gauging the means for controlling the powering of the actuator with each passage to the extreme position of the travel of the control member.