EN炉膛声学层析测温探头分布方式研究
Study of Probe Distribution for Furnace Acoustic Tomographic Temperature Measurement
- 发电技术 2021年42卷第3期 页码：329-335
- 作者机构：
华北电力大学自动化系, 河北省 保定市 071003
- 作者简介：
[ "张立峰(1979), 男, 博士, 副教授, 主要从事多相流检测及电学层析成像技术方面的研究工作, lifeng.zhang@ncepu.edu.cn" ]
[ "苗雨(1996), 男, 硕士研究生, 主要从事声学层析测温方面的研究工作, 810625278@qq.com" ]
- 基金信息：国家自然科学基金项目(61973115)
DOI：10.12096/j.2096-4528.pgt.20050
中图分类号： TK311收稿：2020-06-29，
纸质出版：2021-06-30
- 稿件说明：
移动端阅览
张立峰, 苗雨. 炉膛声学层析测温探头分布方式研究[J]. 发电技术, 2021,42(3):329-335.
Lifeng ZHANG, Yu MIAO. Study of Probe Distribution for Furnace Acoustic Tomographic Temperature Measurement[J]. Power Generation Technology, 2021, 42(3): 329-335.
张立峰, 苗雨. 炉膛声学层析测温探头分布方式研究[J]. 发电技术, 2021,42(3):329-335. DOI： 10.12096/j.2096-4528.pgt.20050.
Lifeng ZHANG, Yu MIAO. Study of Probe Distribution for Furnace Acoustic Tomographic Temperature Measurement[J]. Power Generation Technology, 2021, 42(3): 329-335. DOI： 10.12096/j.2096-4528.pgt.20050.
摘要
炉膛声学层析测温系统可获得炉膛温度二维/三维分布图像，超声波探头分布方式将直接影响其成像精度。研究了8、12及16个超声波探头的4面与4角分布方式，先采用Tikhonov正则化重建算法获取粗网格下的温度分布，再采用局部加权回归法预测网格细化后的温度分布。选取典型的温度场分布，对所研究的6种探头分布下温度场重建后的均方根误差及相关系数进行了比较，结果表明，采用16探头进行4面分布时，其重建精度最高。
Abstract
The two/three-dimensional distribution image of furnace temperature can be obtained by furnace acoustic tomographic temperature measurement system. The distribution of ultrasonic probes will directly affect its imaging accuracy. Four-side and four-corner distribution of 8
12 and 16 ultrasonic probes were studied
respectively. Tikhonov regularization algorithm was adopted to obtain the temperature distribution under coarse mesh
and then the local weighted regression method was used to predict the temperature distribution after mesh refinement. Typical temperature field distributions reconstruction was carried out for the 6 probe distributions
and the root mean square error and correlation coefficient were analyzed. The results show that the highest accuracy can be obtained using 16 four-side distribution probes.
关键词
Keywords
references
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