Hybrid spherical particle field measurement based on interference technology

Hybrid spherical particle field measurement based on interference technology
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基于干涉技术的混合球形颗粒场测量

DOI:
10.1088/1361-6501/aa58b0
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发表时间:
2017-02
影响因子:
2.4
通讯作者:
Tiegen Liu
Tiegen Liu
中科院分区:
工程技术3区
文献类型:
--
作者:
Jiao Li;Ye Zhou;Dagong Jia;Tiegen Liu

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参考文献

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干涉颗粒成像技术在颗粒尺寸测量中有着广泛的应用。传统的粒子场干涉条纹提取算法主要针对单一尺寸的粒子场,由于噪声的存在,难以提取混合球形粒子场中的每一条干涉条纹。针对这一问题,提出了一种迭代均值滤波(IMF)算法.该方法不采用特定的均值滤波模板系数,而是通过迭代不同模板系数下的计算结果来降低噪声。将排除了粗差的计算结果的平均值作为最终结果输出。仿真了不同模板系数的效果,并分析了模板系数的取值范围。用模板系数为2、8、12的常规算法和IMF算法对21.3 μm ~ 57.9 μm混合球形粒子场的干涉图进行了处理。相应的测量误差分别为17.22%、10.69%、9.04%和5.11%。实验结果表明,IMF算法可以减小测量误差,在粒子场测量中具有潜在的应用价值。
Interferometric particle imaging is widely used in particle size measurement. Conventional algorithms, which focus on single size particle fields, have difficulties in extracting each interference fringe in a hybrid spherical particle field due to the noise. To solve this problem, an iterative mean filter (IMF) algorithm is proposed. Instead of the specific mean filter template coefficient, the noise is reduced by iterating the calculation results under different template coefficients. The average value of the calculation results excluding the gross error is output as the final result. The effect of different template coefficients are simulated, furthermore, the value range of template coefficients has been analyzed. The interferogram of the hybrid spherical particle field from 21.3 µm to 57.9 µm is processed by the conventional algorithms with specific template coefficients of 2, 8, 12 and the IMF algorithm. The corresponding measurement errors are 17.22%, 10.69%, 9.04% and 5.11%. The experimental results show that the IMF algorithm would reduce measurement error, and could be potentially applied in particle field measurement.
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