Downhill running control method and system for train

Abstract

The invention provides a downhill running control method and system for a train. The method comprises the following steps: designing a heavy-load train running control strategy and generating a target speed curve; when the train passes through a long and large downhill line, the abrasion of the train and the line is reduced, and the coupler is prevented from being snapped; when the target speed curve is tracked, the error between the actual tracking speed and the target speed is controlled within a reasonable range, and speed tracking control over the train is achieved. According to the method, firstly, the strictest target speed and position in front of train operation are determined by designing the description form of line data; secondly, according to the strictest target speed and position, the design of a long and large downhill reference speed curve is completed in combination with the line gradient, advanced speed reduction of a long and large downhill section train is achieved, and it is guaranteed that the ATO speed is within the safety range; and finally, according to the air charging time, the air discharging time and the downhill gradient value, the lower bound of the air braking applying and cancelling speed is adjusted, and the smoothness of air braking output is guaranteed.

Description

technical field [0001] The invention belongs to the field of train control, in particular to a method and system for controlling downhill running of a train. Background technique [0002] The automatic train operation (ATO, Automatic Train Operation) system uses ground information to realize traction, braking control and automatic return of the train. The ATO system realizes the automatic driving of the train, completes the automatic driving control of the train under the protection of the automatic train protection (ATP, Automatic Train Protection), and realizes the traction, braking, cruising control of the vehicle. [0003] When the locomotive is running on a long downhill, the force analysis of the locomotive shows that the gravity component along the slope direction increases, resulting in greater acceleration in the forward direction of the locomotive, and the running speed must be adjusted by air braking. While using the air brake, the air pressure keeps decreasing, ...

AI Technical Summary

Problems solved by technology

During the operation of heavy-duty locomotives, if the longitudinal impulse generated is too large, the couplers in the locomotive workshop will be severely worn or even broken, and the train will derail and other safety accidents.

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