Multi-mode simulation test system for anti-skid system of railway vehicle

Abstract

The embodiment of the invention provides a multi-mode simulation test system for an anti-skid system of a railway vehicle. The multi-mode simulation test system comprises an anti-skid control module, a simulation control module in signal connection with the anti-skid control module, an axle speed real piece unit and a pneumatic real piece unit, wherein the axle speed real piece unit and the pneumatic real piece unit are connected with the anti-skid control module and the simulation control module; and the simulation control module is provided with a comprehensive wiring unit, the comprehensive wiring unit comprises a signal switching box connected with a signal input end of the axle speed real piece unit, a signal input and output end of the pneumatic real piece unit, a preset speed simulation model and a preset pneumatic simulation model, the preset speed simulation model is used for generating a simulation gear pulse signal, and the preset pneumatic simulation model is used for generating a simulation brake cylinder pressure signal. According to the invention, the flexibility and accuracy of the rail vehicle anti-skid system test can be effectively improved.

Description

technical field [0001] The present application relates to the field of brake systems, in particular to a multi-mode simulation test system for rail vehicle anti-skid systems. Background technique [0002] Anti-skid control is the key technology of brake control. The function and performance of the anti-skid system are directly related to the safety of braking components and even the entire EMU. Therefore, the anti-skid system must pass functional and performance tests before it is installed on the train to verify its effectiveness. reliability and safety. [0003] According to the requirements of the UIC international anti-skid standard, there are two methods for testing and verifying the anti-skid system: one is circuit test, and the other is simulation bench test. Due to the high cost and time-consuming characteristics of the organization and management of the anti-skid line test, for the optimization and improvement of the existing anti-skid system or the newly developed...

AI Technical Summary

Problems solved by technology

Although the traditional anti-skid simulation test method has played an active role in the research of anti-skid criterion, reference speed calculation verification, fault diagnosis research, etc., the test program does not form a closed loop and cannot simulate the controlled object and vehicle environment of the anti-skid control system. , there are many restrictions on functions, such as:

[0005] (1) Inability to respond to the effects of skid control;

[0006] (2) It is impossible to analyze the influence of the action of the anti-skid valve on the brake pressure and the state of the wheel set, and it is impossible to qualitatively assess the performance of the anti-skid control;

[0007] (3) It is impossible to provide test conditions for the theoretical analysis of anti-skid in the laboratory

[0008] In addition, although some anti-skid simulation test benches adopt closed-loop control, they can verify the whole process from the action of the anti-skid valve to the pressure change of the brake cylinder and then feedback and calculate the change of the shaft speed. Unit and control unit, pneumatic unit and control unit, only control unit), the test bench cannot be adjusted according to actual needs, and the structural adaptability and flexibility of the test bench are not strong, which limits the application range of the anti-skid simulation bench

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