Russian Federation
Russian Federation
Objective: one of the most significant drawbacks of the pneumatic braking system of freight trains is its poor controllability, due to a significant variation in the characteristics of the braking devices, the values of the structural parameters of the braking system, the loading of cars, the conditions of adhesion of wheels with rails, as well as environmental conditions. The article proposes a method of increasing controllability of a pneumatic braking system of a freight train by controlling the braking process by the value of residual brake force operation determined in the process of operational forecast calculation of the braking trajectory, and instantaneous braking power controlled in the process of braking. Methods: the paper analyzes methods for predicting regulatory breaking and construct a model experiment to determine the parameters of targeting regulatory breaking for trains. Results: an algorithm for preliminary predictive breaking calculation is proposed, and the results of testing the method on a functional mathematical model are presented, confirming its effectiveness. Practical Importance: the results of checking the method on a functional mathematical model confirming its effectiveness are given. Application of proposed method of control of pneumatic braking of freight train in automatic driving systems will make it possible to increase accuracy of train control in braking modes, which is especially important in arrangement of train movement using modern technologies of coordinate control of movement.
pneumatic braking, freight train, braking system, braking force, control, brake force operation, brake release, aimed braking
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