Temperature effects and compensation in ultrasonic concentration measurement of multicomponent mixture
Temperature effects and compensation in ultrasonic concentration measurement of multicomponent mixture
复制标题
多组分混合物超声波浓度测量中的温度影响及补偿
DOI：
10.1016/j.sna.2016.10.036
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发表时间：
2016-12
期刊：
影响因子：
--
通讯作者：
Li XW
中科院分区：
文献类型：
--
作者：
Zhan Xiaobin;Yang Yili;Liang Jian;Shi Tielin;Li Xiwen;Li XW
超声波技术已成功地应用于混合物浓度的测量，但超声波传感器对混合物的温度敏感，这给超声波浓度测量带来很大困难。在这项研究中，提出了一种新的超声波方法，用于补偿温度的影响，并测量多组分混合物，包括不溶性和可溶性物质的浓度。本文首先研究了温度对超声信号的影响以及混合物浓度的超声测量。然后，结合超声波光谱，分别建立了基于协方差区间偏最小二乘（Si-PLS）模型和线性插值的分步温度补偿（STC）模型和基于Si-PLS模型的全局温度补偿（GTC）模型。实验结果表明，超声光谱与温度补偿模型相结合，可以有效地补偿温度效应，测量16 °C ~ 40 °C范围内多组分混合物的组分浓度。GTC模型的预测子集的均方根误差为0.54wt.%，特别是当样品的温度难以获取或必须由超声谱估计时，该模型上级STC模型。该方法拓宽了超声波浓度测量的应用范围，使得仅用一个超声波传感器就可以对多组分混合物的生产过程和产品质量进行监控。
The ultrasonic technique has been successfully used to measure the concentrations of mixtures, but ultrasonic sensor is sensitive to the temperature of mixtures, which makes the ultrasonic concentration measurement very difficult. In this study, a novel ultrasonic method for compensating the temperature effects and measuring the concentrations of multicomponent mixtures comprising insoluble and soluble substances is proposed. At first, the temperature effects on the ultrasonic signals and ultrasonic concentration measurement of mixtures are investigated. Then, the stepwise temperature compensation (STC) model based on the synergy interval partial least squares (Si-PLS) model and linear interpolation as well as the global temperature compensation (GTC) model based on the Si-PLS model are separately established in combination with the ultrasonic spectra. The overall results indicate that the combination of ultrasonic spectra and temperature compensation models can compensate for the temperature effects effectively and measure the component concentrations of multicomponent mixtures in the range from 16 °C to 40 °C. The GTC model, with which the root mean square error of the prediction subset is 0.54 wt.%, is superior to the STC model, especially when the temperatures of samples are difficult to be acquired or have to be estimated from the ultrasonic spectra. The proposed method can broaden the application scope of ultrasonic concentration measurement, which makes it easier to monitor production process and product quality of multicomponent mixtures with one ultrasonic sensor only.
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影响因子：
7
作者：
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通讯作者：
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影响因子：
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