Line curvature real-time detection system and method for active radial control

Abstract

The invention relates to a line curvature real-time detection system for active radial control and a method thereof. The system comprises an angular velocity sensor, a velocity measurement sensor, a tilt angle sensor and a curvature operation unit which are arranged on a bogie. On one hand, the curvature operation unit obtains a driving track of the bogie on a two-dimensional horizontal plane through a bogie two-dimensional plane moving track obtaining module and calculates a line curvature fitting value; on the other hand, a bogie roll posture track is obtained through a bogie roll posture track obtaining module, and a bogie dip angle fitting value is calculated; and a stable proportionality coefficient operation value between the inclination angle and the curvature of the track line is obtained through a data fusion module, so that a bogie inclination angle fitting value is indirectly converted into a line curvature value, and a line curvature detection result is obtained. Compared with the prior art, the line curvature can be accurately detected in real time, the system layout is simple, implementation is easy, and adaptability to different forms of railway vehicles is good.

Description

technical field [0001] The invention relates to the technical field of track line curvature detection, in particular to a line curvature real-time detection system and method for active radial control. Background technique [0002] For the rail vehicle active control system, the curvature radius of the track line is an important control parameter, and the accurate curvature radius detection will directly affect the final control effect. Since the rail vehicle usually travels along a given track, the running posture of the vehicle system, especially the posture of the vehicle body and the bogie, will inevitably contain certain route information during the running process of the rail vehicle. Chinese patent CN202294869U discloses a monitoring device for dynamically monitoring the curvature of a track, but this solution cannot realize online real-time measurement, so it cannot provide effective control parameters for the active control system; [0003] Chinese patent CN1065702...

AI Technical Summary

Problems solved by technology

Chinese patent CN202294869U discloses a monitoring device for track dynamic monitoring curvature, but this solution cannot realize online real-time measurement, and cannot provide effective control parameters for the active control system;

[0003] Chinese patent CN106570214A discloses an online real-time measurement system and method for the curvature of track lines based on the secondary rotation angle. Although this solution can measure the curvature radius of the line in real time online, it is difficult to measure the secondary rotation angle and requires the design of specific machinery. The interface is equipped with an angle sensor, and it is only suitable for vehicles with a fixed center of rotation between the bogie and the car body, which is not well adaptable to the vehicle structure;

[0004] In addition, "Wang Xuemei, Ni Wenbo, Li Fu. Research on the Line Information Detection System of Tilting Trains Based on the Gyro Platform. "China Railway Science". 2004." proposed a swinging train line information detection system based on the single-axis gyro platform. Theoretically, the superelevation value of the line and the curvature value of the curve can be measured when the train passes the curve, but the sensors of the system are arranged on the car body, and the geometric inertia of the car body will reduce the real-time performance of line information measurement, so the head has to be discarded. car control performance

[0005] In summary, it is difficult for the above existing technologies to detect and obtain the curvature data of the track line in real time, accurately and simply.

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