Method for obtaining information on the wear condition of a vehicle braking system

A method for obtaining information on the wear condition of a braking system of a vehicle, said braking system comprising:

• at least one hydraulic or electro-hydraulic actuator of a disc brake,
• at least one electronic processing unit connected to said at least one hydraulic or electro-hydraulic actuator for receiving data representative of a measurement of the pressure of the brake master cylinder and a measurement of the stroke of the brake master cylinder actuated by said actuator during a braking detection time interval associated with each braking event;
• the method comprising the steps of:
• providing, to said at least one electronic processing unit, a parametric function representative of a current condition of the braking system of the vehicle, said parametric function being adapted to describe a relationship between the stroke of the brake master cylinder and the braking pressure applied by the brake master cylinder, as a function of one or more coefficients;
• detecting, by a supervisor block of the at least one electronic processing unit one or more braking samples in a braking detection time interval, for enabling an estimation block of said at least one electronic processing unit following the detection of each braking sample;
• receiving, by said estimation block, a first pressure measurement of the brake master cylinder and a first stroke measurement of the brake master cylinder during each braking sample of said one or more braking samples;
• estimating, by said estimation block, a plurality of first coefficients of said parametric function associated with each braking sample based on said first pressure measurement of the brake master cylinder and first stroke measurement of the brake master cylinder;
• enabling, by the supervisor block, a filtering block of said at least one electronic processing unit at the end of the braking detection time interval;
• filtering, by the filtering block, the plurality of first coefficients associated with each braking sample to generate a plurality of second filtered coefficients provided to the supervisor block;
• validating, by the supervisor block, said second filtered coefficients to generate validated coefficients defining a first parametric function representative of the condition of the braking system following said braking detection time interval;
• sending said validated coefficients to a wear estimation block of the at least one electronic processing unit to generate first information representative of a wear condition of the friction material of the braking system.