Key Technologies and Experimental System of High-speed Train Tracking Monitoring

Abstract

The researches of high-speed train service performance need to be more rely on realtime tracking detection of train service performance, using the theory of modern signal processing, intelligent information processing method and the dynamic theory to intercross and fusion, and inverting the service performance of vehicle parts, systems and the whole vehicle based on the detection and monitoring of the physical characteristics, so that to be more fit the actual demand to the guidance of train safety application, scientific maintenance and optimal design. The objective of the article is to establish the system of the on-line field tests for the high-speed train. The article first introduce the test method and system as well as the field conditions including the main parameters of the test train, especially the running gear system which is the heart of the vehicle. Based on the test data, the article presents the vibration behaviors of car body, bogie frame and axle box as well as the lateral hunting stability of the train operating at the speed of 350 km/h, and the evolution of the train dynamic performance under long term operation condition. The partial monitoring results show that the vibration accelerations of vehicle components are stable and in a low level when the train runs on a non-ballasted track at the speed of 350 km/h, indicating that both the ride comfort and the running stability are acceptable. Through wheel re-profiling, it is possible to effectively reduce the vibration of the axle box, the bogie frame and the car body, and thus the vehicle dynamic performance can be kept in an excellent condition in a long period. The future research topics are proposed in the article terminal.