Device for detecting the clamping force of a brake caliper and control system of a braking system

A control system of a braking system of a vehicle, comprising at least one device for detecting a clamping force of a brake caliper of the braking system of the vehicle, the device comprising:

• a force sensor comprising a sensitive element suitable for measuring a force acting thereon;
• a force transmitting element suitable for transmitting the clamping force applied by the brake caliper to the sensitive element, the force transmitting element being movable when subjected to the clamping force applied by the brake caliper to transmit the clamping force to the sensitive element;
• and
• a mechanical limit stop element outside the sensitive element,
• wherein the force sensor is configured to measure the clamping force up to a sensor force threshold value that is lower than a maximum clamping force to be applied by the brake caliper, and wherein the mechanical limit stop element is configured to be engaged by the force transmitting element when the clamping force exceeds the sensor force threshold value so as to sustain an excess clamping force given by a difference between the clamping force applied by the brake caliper and the sensor force threshold value,
• at least one actuator sensor suitable for acquiring information on a status of a caliper actuator, and
• a force estimating module configured to determine a clamping force value in a force range between a maximum force value measurable by the force sensor and a maximum force value to be applied by the brake caliper;
• wherein:
• Fpreload being a preload force applied by an elastic preload means when the force sensor is at rest,
• K being an elastic constant of the preload elastic means, and
• LS being the maximum travel for the force transmitting element,
• a maximum force measurable by the force sensor is equal to Fpreload+K*LS.