Method for relieving start-up impulse of rail train

Abstract

The invention provides a method for relieving start-up impulse of a rail train. The method includes the following steps that S1, backward slip force Fb borne by the train is obtained; S2, a train traction motor is started, traction force Ft is gradually increased, train brake is relieved, brake force Fs is gradually reduced, so that the traction force Ft is smaller than or equal to the sum of the brake force Fs and the backward slip force Fb, meanwhile, the backward slip force Fb is smaller than or equal to the sum of the brake force Fs and the traction force Ft, when the traction force Ft is increased to be equal to the backward slip force Fb, and the traction force Ft is locked and maintained; S3, when the brake force Fs is reduced to zero, the traction force Ft of the train is gradually increased to achieve stable start of the train. According to the method, when the train starts to move, the moving state of the train is only affected by traction force, and impulse caused when the train is started can be effectively relieved, and comfortable experience is brought to train passengers. Besides, the method has the advantages of being suitable for various rail trains, easy to control and the like.

Description

technical field [0001] The invention relates to the field of rail train control, in particular to a method for alleviating the starting impulse of rail trains. Background technique [0002] With the rapid development of railway construction, railways, subways, and emerging trams, low-floor vehicles and other urban rail trains have been popularized and applied on a large scale. At present, the coverage rate of China's subways in provincial capitals and municipalities has exceeded 50%, and many coastal economies are developed. There are also applications and plans in non-provincial capital cities in the region. On the premise of meeting the basic safety of traffic, the comfort of passengers has attracted more and more attention. In a broad sense, passenger comfort refers to the comprehensive response evaluation of passengers on trains to the quality of travel by train, involving physical, physiological and psychological factors. Comfort is affected by many factors such as vib...

AI Technical Summary

Problems solved by technology

However, in the traditional train control strategy, TCMS does not have additional processing after sending the brake release command. The analysis of the train force situation is as follows: figure 1 As shown, at time t1, the traction force is equal to the backsliding force, and the train starts to release and hold the brake. At time t2, the traction force F t greater than the braking force F s and backsliding force F b sum, the train starts to start, at this moment, the motion start state of the train is simultaneously affected by the traction force F t and braking force F s The effect of the change until the moment t3 braking force F s ease to 0, although the train network control system TCMS has an effect on the traction force F t and braking force F s Both have implemented the maximum impact slope control, but under the joint action of the two, the impact of the train is still too large when starting, which affects the comfort of passengers

Images