自动轨道衡偏载功能测量结果不确定度评定

Uncertainty evaluation on the unbalance load detection of automatic rail-weighbridges

为确保自动轨道衡偏载功能测量结果的准确性和可靠性,以满足铁路货物运输安全检测要求,该文建立自动轨道衡偏载功能的测量数学模型,根据JJF 1059.1-2012《测量不确定度评定与表示》分析各种参数测定时的影响因素,采用GUM法对其进行不确定度评定。评定结果表明:所有参数测量结果的扩展不确定度均小于其最大可接受扩展不确定度,为完善自动轨道衡偏载功能量值溯源及传递体系提供了技术依据。

In order to ensure the accuracy and reliability of the detection value of the unbalance load detection of the automatic rail-weighbridges and meet the requirements of the safety detection of railway freight transportation,this paper establishes the measurement mathematical model of the unbalance load detection of the automatic rail-weighbridges,analyzes various uncertainty factors affecting the determination of each parameter according to JJF 1059.1-2012,Evaluation and Expression of Uncertainty in Measurement,and evaluates the uncertainty of each parameter by GUM method.The analysis results show that the expanded uncertainty of all parameter measurement results is less than its maximum acceptable expanded uncertainty,which provides a technical basis for improving the value traceability and transmission system of unbalance load detection of the automatic rail-weighbridges.