Traction control method, device and system

Abstract

The invention provides a traction control method, device and system. The method comprises the steps of generating an initial traction force according to a traction instruction by the traction control device when the traction control device receives the traction instruction sent by a driver controller; separately calculating the vehicle resultant force and an acceleration of a train when the initial traction force rises to a preset maximum value; calculating the acceleration to obtain an equivalent acceleration corresponding to the acceleration; obtaining the load value of the train so as to realize compensation for a train traction force / electric braking force according to the load value of the train, wherein the load value of the train is obtained through the relation between the vehicle resultant force and the equivalent acceleration. Compared with a method which cannot provide current actual load information of the train in the prior art, by applying the traction control method, device and system, the load value of the train can be estimated online and further load compensation during train traction force / electric braking force distribution is realized.

Description

technical field [0001] The invention relates to the technical field of urban rail transit, and more specifically, to a traction control method, device and system. Background technique [0002] The traction force / braking force command of the urban rail train is issued by the driver controller, and the traction control device performs load compensation for the traction force / electric braking force according to the command information and the current actual load of the train, so that the train meets the acceleration / deceleration requirements. Run in the most energy efficient and comfortable way possible. [0003] The current actual load value of traditional urban rail trains is usually provided by the secondary suspension device, which usually uses air springs, where the pressure value of the air spring can reflect the current actual load value of the train; and some new urban rail trains, For example, in a low-floor tram, the secondary suspension of the bogie usually adopts a...

AI Technical Summary

Problems solved by technology

[0003] The current actual load value of traditional urban rail trains is usually provided by the secondary suspension device, which usually uses air springs, where the pressure value of the air spring can reflect the current actual load value of the train; and some new urban rail trains, For example, in a low-floor tram, the secondary suspension of the bogie usually adopts an elastic rubber pile whose pressure value cannot be measured, so that the current actual load information of the train cannot be provided, and the traction control device cannot adjust the traction force / Electric braking force distribution for accurate load compensation

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