计量学报2026，Vol.47Issue(1)：8-15,8.DOI:10.3969/j.issn.1000-1158.2026.01.02
应变梁多源载荷校准模型的误差估计方法
Error Estimation Method for Multi-source Load Calibration Model of Strain Beams
摘要
Abstract
The strain beam is an important tool for high-precision calibration of strain sensors.However,due to the dual influence of excitation attenuation and inaccurate response measurement,the load calibration model of strain beam under multi-source load is easy to deviation.For this reason,a multi-source load calibration error estimation method is proposed to error estimation.According to the mechanical characteristics of the cantilever of the strain beam,the load transfer relationship between the multi-source excitation and the measured section of the structural response is analyzed,and the stress model of the measured section is established.In order to verify the effectiveness of this method,a strain beam calibration system is built,and a multi-source load loading experiment is completed.Experimental results show that the accuracy of the proposed method is better than 0.99,and the relative estimation error is better than 1.3%.关键词
力学计量/应变梁/载荷校准/参数辨识/最小二乘法/多源加载Key words
mechanical metrology/strain beams/load calibration/parameter identification/least squares/multi-source loading分类
通用工业技术引用本文复制引用
金婉莹,江文松,罗哉,沈雯阳,李占海..应变梁多源载荷校准模型的误差估计方法[J].计量学报,2026,47(1):8-15,8.基金项目
国家重点研发计划(2022YFF0705704) （2022YFF0705704）
国家市场监督管理总局技术保障专项项目(2023YJ10) （2023YJ10）
