Improving the Stability of the Train Formation Plan to Uneven Operational Work

Abstract

The rational organization of operational work largely depends on the train formation plan. A correctly calculated formation plan allows you to reduce operating costs and reduce the number of adjustments to the operation of stations and sections. The current practice of calculating the train formation plan does not take into account the variable nature of its design parameters. In this case, the decision to organize car traffic is not always optimal, and the train formation plan is subject to multiple adjustments during the life cycle. The purpose of the article is to describe the method of accounting for the variable nature of the calculated parameters of car traffic, which will increase the stability of the train formation plan. To achieve this goal, we suggest using fuzzy sets. The description of the method of accounting for fluctuations in car traffic and the parameters of the system of organization of car traffic that depend on it is given. Using the method of finding solutions in fuzzy conditions developed by Bellman and Zadeh, a method for determining the optimal threshold value of car traffic in uneven conditions is developed. The use of variable standards in the development of a train formation plan can increase its stability, which will lead to a reduction in the number of adjustments, as well as to a reduction in operating costs for its implementation. A calculated example showing the effectiveness of the proposed approach is given.