解析称重传感器误差计算用最佳拟合直线  

Analysis of weighing sensor error is calculated using the best fitting line

作　　者：刘九卿[1] 

机构地区：[1]中国运载火箭技术研究院第702研究所

出　　处：《衡器》2014年第2期32-36,共5页Weighing Instrument

摘　　要：电阻应变式称重传感器误差是一个极限值,一旦评定标准选择后,就客观的存在于称重传感器的检定试验数据中,它对准确的评定称重传感器性能指标至关重要。本文通过对最小二乘法、平均选点法、端点连线法求得的最佳拟合直线的分析和实际计算,解析了国际法制计量组织(OIML)R60国际建议和GB/T 7551-2008《称重传感器》国家标准,将75%载荷时的输出与最小载荷输出的拟合直线作为称重传感器误差包络线基准的理由。Resistance strain weighing sensor error is a limit value, once the standard selection, test data is objective existence in the weighing sensor. Weighing sensor performance index to its accurate assessment. Based on the least square method, mean point method, terminal connection method of the line of best fit analysis and practical calculation, analysis of the international organization of Legal Metrology（OIML） R60 international recommendations and GB/T7551-2008 ＂national standard＂ weighing sensor, 75% load output linear fitting and the minimum load output as weighing sensor error envelope datum reason.

关 键 词：称重传感器 最小二乘法 平均选点法 端点连线法 误差包络线 最佳拟合直线 

分 类 号：TH715.1[机械工程—测试计量技术及仪器]