Freight train operation curve optimization method based on improved multi-target grey wolf algorithm

Abstract

The invention discloses a freight train operation curve optimization method based on an improved multi-target grey wolf algorithm. A homogeneous rod model and a multi-particle model based on speed self-adaption of the freight train are established according to parameter changes when the train passes through a ramp and a curve in the running process. As the coupler force of a freight train is usually large, the phenomenon of coupler breaking is likely to happen, and therefore modeling of a buffer between trains is considered. In combination with constraint conditions of a line, safety coupler force, operation time and energy consumption of a train are comprehensively considered as constraints of multi-objective optimization, driving comfort, parking accuracy and speed limiting conditions. And according to the train operation indexes and the limiting conditions of the operation road conditions, an improved multi-target grey wolf algorithm is used for researching the optimal operation working condition sequence. For the complex nonlinear train operation process, the train operation curve can be optimized through the method, and safe, energy-saving and punctual operation of the train is achieved.

Description

Technical field [0001] The present invention relates to the operation of the freight train operation process model switching and operation curve optimization, belonging to the automatic driving technology of the train. Background technique [0002] Railway transportation is an important part of modern transportation, and the development of freight trains is in the ascendant. The prospect is broad. The freight train has the advantages of large volume, fast speed, low energy consumption, low cost, high security, and strong sense of safety, showing huge advantages on transporting goods. However, the energy consumption required for the freight train is not small. In order to achieve energy conservation and emission reduction of the railway system, it is necessary to conduct research on the energy saving of freight train. At the same time, due to the continuous increase in freight train, the transportation safety problem of the train begins highlighting, such as car hook hooks, hinder...

AI Technical Summary

Problems solved by technology

The traditional single-mass model ignores the interaction force between vehicles, does not consider the coupling relationship between vehicles, and cannot accurately describe the actual running process of the train. However, the train coupler force is very important for the safe operation of the train

Images