| Voidage measurement based on genetic algorithm and electrical capacitance tomography |
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| 作者姓名： | 王微微 王保良 黄志尧 李海青 |
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| 作者单位： | Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China，Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China，Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China，Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China |
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| 摘 要： | INTRODUCTION Two-phase flow exists widely in chemical, pe- troleum and metallurgical industries. The voidage is one of the most important parameters of two-phase flow because the measurement of the voidage is im- portant for safety, environmental protection, energy conservation and quality assurance in industry (Hewitt, 1978; Lin, 1992). Although many voidage measurement methods have been proposed, it is still difficult to measure the voidage due to the complexity of the characteristics o…
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| 关 键 词： | 空隙度测量 遗传算法 流体力学 X线断层摄影术 ECT |
| 收稿时间： | 2004-09-07 |
| 修稿时间： | 2004-09-20 |
Voidage measurement based on genetic algorithm and electrical capacitance tomography |
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| Wang Wei-wei,Wang Bao-liang,Huang Zhi-yao,Li Hai-qing.Voidage measurement based on genetic algorithm and electrical capacitance tomography[J].Journal of Zhejiang University Science,2005,6(12):1441-1445. |
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| Authors: | Wang Wei-wei Wang Bao-liang Huang Zhi-yao Li Hai-qing |
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| Institution: | (1) Department of Control Science and Engineering, Zhejiang University, 310027 Hangzhou, China |
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| Abstract: | A new voidage measurement method based on electrical capacitance tomography (ECT) technique, Genetic Algorithm (GA) and Partial Least Square (PLS) method was proposed. The voidage measurement model, linear capacitance combination, was developed to measure on-line voidage. GA and PLS method were used to determine the coefficients of the voidage measurement model. GA was used to explore the optimal capacitance combination which gave significant contribution to the voidage measurement. PLS method was applied to determine the weight coefficient of the contribution of each capacitance to the voidage measurement. Flow pattern identification result was introduced to improve the voidage measurement accuracy. Experimental results showed that the proposed voidage measurement method is effective and that the measurement accuracy is satisfactory. |
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| Keywords: | Voidage Two-phase flow Genetic Algorithm (GA) Electrical capacitance tomography (ECT) |
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