| 叠加式力标准装置系统误差修正研究 |
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| 引用本文： | 梁伟,杨晓翔,姚进辉,许航.叠加式力标准装置系统误差修正研究[J].仪器仪表学报,2016,37(11):2473-2481. |
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| 作者姓名： | 梁伟 杨晓翔 姚进辉 许航 |
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| 作者单位： | 1. 福州大学机械工程及自动化学院福州350116；2. 福建省计量科学研究院福州350003,福州大学机械工程及自动化学院福州350116,福建省计量科学研究院福州350003,福建省计量科学研究院福州350003 |
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| 基金项目： | 国家质量监督检验检疫总局科技计划（2015QK295）、福建省属公益类科研院所基本科研专项（2014R1033 2）资助 |
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| 摘 要： | 超大力值叠加式力标准装置是力值计量领域研究的前沿和热点,消除系统误差对提高叠加式力标准装置的准确度水平具有重要意义。提出一种叠加式力标准装置系统误差修正的方法与流程,并对本方法中系统误差的外推提出了4种不同的外推方法。通过对3台不同结构的300 k N和一台20 MN叠加式力标准装置的实验对比研究,确定最优误差外推方法,并利用该方法对一台60 MN叠加式力标准装置进行力值修正,该装置修正后与英国国家物理实验室30 MN叠加式力标准机的力值比对相对偏差不超过±0.06%,E_n值小于1。研究结果表明:在叠加式力标准装置修正前示值误差方程的外推中,宜采用1次或2次多项式方程进行外推,避免因方程次数较高,导致外推结果发散;在叠加式力标准装置结构设计时,应尽量优化其线性度,减小外推误差,提高示值误差外推的准确性;本方法能有效减小叠加式力标准装置的系统误差,提高装置的力值准确度。
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| 关 键 词： | 超大力值 叠加式 力标准装置 系统误差 误差修正 |
| 收稿时间： | 2016/7/6 0:00:00 |
| 修稿时间： | 2016/9/13 0:00:00 |
Study on systemic error correction of build up force standard device |
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| Liang Wei,Yang Xiaoxiang,Yao Jinhui and Xu Hang.Study on systemic error correction of build up force standard device[J].Chinese Journal of Scientific Instrument,2016,37(11):2473-2481. |
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| Authors: | Liang Wei Yang Xiaoxiang Yao Jinhui and Xu Hang |
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| Affiliation: | 1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China; 2. Fujian Metrology Institute, Fuzhou 350003, China,School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China,Fujian Metrology Institute, Fuzhou 350003, China and Fujian Metrology Institute, Fuzhou 350003, China |
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| Abstract: | The study of the build up force standard device with super wide range is the leading edge and hot spot in the field of force metrology. Correcting the systemic error has great importance for improving the accuracy of build up force standard device. A correction method and process were proposed for the systemic error correction of the build up force standard device. Four extrapolation methods of the systematic error were proposed, which were compared in the experiments of a 20 MN and three 300 kN build up force standard devices with different structures. The best extrapolation method obtained from the experiments was determined and used in the force correction of a 60 MN build up force standard device. The corrected 60 MN build up force standard device was compared with the 30 MN build up force standard machine in NPL and the force comparison relative deviation is less than ±0.06%, and the En is less than 1. The study results show that in the extrapolation of the indication error equation before the correction of the build up force standard device, it is better to adopt 1st or 2nd order polynomial equation for the extrapolation to avoid the extrapolation result divergence due to the high equation order. Besides, in the structure design of the build up force standard device, the linearity of the device should be optimized as much as possible to reduce the extrapolation error and improve the accuracy of the indication error extrapolation. The proposed method can effectively decrease the systematic error of the build up force standard device and improve the force accuracy of the device. |
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| Keywords: | force in super wide range build up force standard device systematic error error correction |
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