Method of servo-control in a braking system having electric brakes

1. A method of servo-control in a vehicle brake system including at least one electric brake having at least one actuator comprising a pusher that faces friction elements and is driven by an electric motor to apply a force selectively against the friction elements in response to a braking setpoint, the method making use of a plurality of relationships between various operating parameters of the actuator including a relationship between a pusher position and a corresponding force applied by the pusher to the friction elements, the method comprising:

adjusting said particular relationship between said pusher position and said corresponding force, wherein said adjustment comprises:

operating the brake under operating conditions in which the force applied by the pusher against the friction elements depends essentially on a power supply current flowing through the electric motor;

in at least one position of the pusher, measuring the power supply current of the electric motor and deducing a corresponding force therefrom; and

from said at least one position and said corresponding force, deducing a correction for the relationship between pusher position and corresponding force.

2. A method according to claim 1 , wherein said operating conditions comprise moving the pusher at constant speed.

3. A method according to claim 1 , wherein the operating conditions include one or more pauses in the position of the pusher.

4. A method according to claim 1 , wherein said operating conditions comprise periodically displacing the pusher with small amplitude about an operating point.

5. A method according to claim 4 , wherein the periodic displacement is superposed on a controlled displacement of the pusher in response to the braking force setpoint.

6. A method according to claim 1 , wherein the adjustment step is implemented at least once per utilization cycle of the vehicle.