Method for controlling and possibly recovering the adhesion of the wheels of a controlled axle of a railway vehicle

摘要

A method for controlling and recovering the adhesion, during a slipping phase, of wheels (W_i) belonging to at least two controlled axles (A_i) of a railway vehicle, comprising the steps of: generating speed signals indicative of the angular speed (ω_i) of said wheels (W_i); estimating the value of the instantaneous adhesion (μ(T_j)) at the point of contact of such wheels (W_i) and the rails, using an adhesion observer; generating a target-slip value (δ) for the wheels (W_i) of the controlled axles (A_i) by means of an optimization algorithm which processes the estimated adhesion values (μ_i(T_j)), and modifying the target-slip value continuously in time, with a predetermined sampling period, such as to maximize the average value of the adhesion of the wheels of the vehicle.