Accurate train parking method for generating parking strategy based on fixed distance

Abstract

The invention relates to an accurate train parking method for generating a parking strategy based on a fixed distance. The method generates the parking strategy at the fixed distance from a parking point and executes the parking strategy immediately. The fixed distance can be any value within 0-1000 m. Parking strategy information only needs to be generated once during a process of accurate parking at a platform. A virtual deceleration is deduced according to the position and speed at the fixed distance from the parking point, and then two levels are determined to be used for parking control according to the virtual deceleration. The two levels only need to be switched once during the process of accurate parking without frequent switching, so as to prolong the service life of a relay interface. In addition, the two levels can be a combination of any two brake levels provided by a vehicle manufacturer. When the project is implemented, the cost of manpower and material resources is significantly reduced according to actual braking parameters provided by vehicles.

Description

technical field [0001] The invention belongs to the technical field of train parking, and in particular relates to a precise train parking method for generating a parking strategy based on a fixed distance. Background technique [0002] The characteristic of the train brake output is discrete brake levels. Even if the vehicle provides a continuous control interface, the actual braking force applied to each vehicle by the train is output in a fixed number of levels; the train stops at the platform In the stage, when the last few meters are accurately stopped, the time is short (about 5s), and the train brake output delay is relatively large at low speed, about 1.3s. Therefore, switching the level output frequently will cause the output to be uncontrollable and the car control effect will not be good. Well, for accurate parking on the platform, the industry generally requires that the probability of stopping within 30cm error must reach 99.998%. [0003] The solution adopted ...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the empirical parameters have no theoretical technical support, they cannot be calculated from the relevant braking rate parameters provided by the vehicle manufacturer. A large number of on-site tests are required, and the cost of debugging is high;

[0005] 2. The empirical parameters are not universal, and the project promotion is difficult;

[0006] 3. During the implementation of the existing scheme, the level switching is not restricted, and the switching is frequent, resulting in a relatively shortened life of the relay interface;

[0007] 4. Frequent grade switching results in unstable train braking and poor comfort for passengers

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