A Method for Determining Confidence Degree of Measured Value of Wheelset Size Online Detection System

Abstract

The invention discloses a method for determining the confidence of a measured value of a wheel-set size online detection system. The method includes the steps of S1, determining a plurality of evaluation indicators for a measured value of a wheel-set size online detection system; S2, dividing the determined plurality of evaluation indicators into a set of influence elements to determine the evaluation hierarchy of the confidence of the measured value; S3, determining evaluation factors that can be used for accurately evaluating the influence elements, and performing grade evaluation for the evaluation factors by a fuzzy number; S4, calculating evaluation weights of other different evaluation factors under each evaluation indicator by the analytic hierarchy process; S5, quantizing parameters of the evaluation indicators comprehensively; and S6, determining the confidence of the measured value of the wheel-set size online detection system. According to the invention, the reliability degree of each measured value of the wheel-set size online detection system can be determined directly and effectively so that the confidence of each measurement result can be reasonably quantized.

Description

technical field [0001] The invention belongs to the technical field of traffic safety engineering, and in particular relates to a method for determining the confidence degree of a measurement value of an online wheel set size detection system. Background technique [0002] In the construction of basic transportation such as subways and light rails, the wheelset not only bears the entire weight of the car body, but also is responsible for transmitting the force between the wheelset and the rail. Therefore, it is an extremely important part of the running part of the vehicle. In order to continuously obtain accurate wheel set size parameters and grasp the quality status of the wheel set in real time, many experts, scholars, and companies at home and abroad have developed various online wheel set size detection systems. However, due to the imperfection of the measurement method of the detection system, the influence of factors such as test instruments and the on-site environmen...

AI Technical Summary

Problems solved by technology

[0007] However, in the existing research and analysis, only referring to the measurement uncertainty and measurement accuracy of the wheel set size online detection system cannot directly and effectively judge the reliability of each measurement value of the wheel set size online detection system, in other words , it is difficult to reasonably quantify the confidence of each measurement result

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