A method and system for anti-slip control of wheel-rail trains

Abstract

Embodiments of the present invention provide a method and system for anti-slip control of wheel-rail trains, including: acquiring the track image in front of the front of the train, identifying the medium type of the medium on the track according to the track image, and acquiring the wheel-rail adhesion creep characteristic curve of the track to determine the Adhesive power threshold when the train is running at the current speed; according to the current speed and target speed of the train, determine the expected acceleration to obtain the expected power of the train running at the current speed; determine the target power of the train according to the expected power and the adhesive power threshold , to output the train control command corresponding to the target power. The wheel-rail train anti-skid control method provided in this embodiment uses machine vision to identify the track state, so as to update the traction braking instruction threshold value of the train according to the maximum adhesion traction force and braking force, so as to achieve safety in wheel-rail adhesion creep ATO's target speed and traction braking command are planned in the working area, which effectively realizes the active anti-skid control of train ATO.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to a method and system for anti-skid control of a wheel-rail train. Background technique [0002] Wheel-rail adhesion is one of the important factors affecting the normal performance of high-speed train traction / braking. The adhesion between the wheel and rail is limited by the adhesion of the road surface. When the traction or braking torque applied to the wheel exceeds the maximum adhesion between the wheel and rail, the wheel will spin or slide. This phenomenon can lead to adverse effects such as reduced passenger comfort, wheel and rail scuffing, and reduced train traction or braking performance. [0003] The ratio of the longitudinal tangential force between the wheel and rail to its positive pressure is defined as the adhesion coefficient, and it is used as an important parameter to measure the adhesion characteristics of the wheel and rail. The adhesion coeffici...

AI Technical Summary

Problems solved by technology

The above-mentioned method is a kind of "post-action" control during idling or coasting, which cannot obtain the best adhesion utilization, and is easily affected by road conditions, with low control accuracy and poor adaptability; It is impossible to avoid damage to the wheel-rail contact surface when the wheel slips

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