基于标准差的制动阀弹簧测试仪精密度的研究

Research on accuracy of brake valve spring testing instrument based on standard deviation

各种类型弹簧测试仪的精密度参差不齐,造成同一个弹簧在同类型测试仪上连续测试多遍的结果相差很大,或同一个弹簧在不同类型测试仪上测试的结果也可能大相径庭,通过测试制动阀弹簧,利用标准差的算法对测试数据进行分析,能够准确地判断出测试仪的精密度。利用标准差的算法,通过对弹簧测试仪测试弹簧数据的分析计算,能够计算出弹簧测试仪测试的精密度。通过不同弹簧测试仪之间精密度的对比,可以判断出弹簧测试仪精密度的高低,对选择弹簧测试仪起到很大的帮助,同时也提高了被测弹簧测试的精密度。

To solve the problem of the ragged precision of the kinds of type spring testing instruments, which could lead to the different outcome of the one spring tested on the same type or different type of testing instrument, the standard deviation arithmetic was used. By testing brake valve spring, it could judge the precision of the testing instrument. With analyzing and calculating the testing data of spring testing instrument, the testing precision of spring testing instrument could be calculated by using standard deviation algorithm. The level of precision of the instrument could be judged by comparison between different instruments. It was a great help to chose the instrument and enhance the precision of tested spring.