| 国外低温内式应变天平技术研究进展 |
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| 引用本文： | 赵莉,邹满玲,田静琳,羊玺.国外低温内式应变天平技术研究进展[J].实验流体力学,2016,30(6):1-9. |
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| 作者姓名： | 赵莉 邹满玲 田静琳 羊玺 |
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| 作者单位： | 中国空气动力研究与发展中心, 四川 绵阳 621000 |
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| 摘 要： | 作为低温风洞测力试验的核心测试设备，低温天平受低温风洞气流温度低、温度变化大的影响，会产生零点温度漂移、灵敏度变化等一系列问题，对试验数据的精准度产生影响。因此，相较常温天平而言，低温天平的研制要求更多，难度也更大。在广泛调研国外低温天平研究进展与关键技术的基础上，系统介绍了低温天平的设计与优化、天平材料的选取及热处理、天平的加工与制造、天平应变片的匹配及粘贴、天平校准方法及校准设备等天平研制的多个关键环节，并对未来低温天平技术的发展进行了展望，为我国低温天平的研制及工程化应用提供参考。
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| 关 键 词： | 低温风洞 应变天平 天平设计 研究进展 |
| 收稿时间： | 2016-06-02 |
Advances of research on internal cryogenic strain gauge balance abroad |
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| Affiliation: | China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China |
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| Abstract: | Cryogenic balance is the key measurement in cryogenic wind tunnel. Due to low air temperature and large temperature variation in the cryogenic wind tunnel, a series of problems arise, such as thermal zero drift and the variation of sensitivity. Therefore there is a risk of decreasing precision of the test data. Thus compared to conventional balances, the development of the cryogenic balance has more requirements and difficulties. By a wide literature survey, the key elements of cryogenic balance are sorted out as follows:design and optimization of balance, material selection and thermal treatment, processing and manufacturing of balance, matching of strain gauge, moisture treatment of balance at low ambient temperature, balance calibration algorithm as well as calibration apparatus and data acquisition equipment. A prospect of the cryogenic balance technologies is also given. The research results presented in this paper are of reference value for development and engineering application of cryogenic balance. |
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