| 基于LS_SVM的气液两相流含气率软测量 |
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| 引用本文： | 刘泽华,高亚奎.基于LS_SVM的气液两相流含气率软测量[J].热能动力工程,2011,26(1). |
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| 作者姓名： | 刘泽华 高亚奎 |
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| 作者单位： | 中航工业第一飞机设计研究院,陕西,西安,710089 |
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| 摘 要： | 采用多圈环形管用于气液两相流参数的测量,对环形管上升段水平方向内外侧差压波动信号进行了分析,采用无因次分析方法获得与差压波动信号均方根相关的特征量,得到了此特征量与容积含气率的关系模型,并在此基础上进行了实验.利用支持向量机优良的非线性映射和强大的泛化能力,建立了一个基于最小二乘法支持向量机的含气率软测量模型,给出了相应的系统结构和算法,针对LS-SVM方法参数选取困难的特点,采用遗传算法进行优化,以提高软测量的精度.仿真和实际运行结果表明,基于LS-SVM的气液两相流含气率软测量模型具有较高的估算精度与泛化能力,为气液两相流舍气率的测量提供了一种简单、可靠的新方法.
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| 关 键 词： | 软测量 最小二乘法支持向量机 遗传算法 两相流 差压波动信号 含气率 |
Least Square Supportive Vector Machine(LS-SVM)-based Soft Measurement of the Gas Content in a Gas-liquid Two-phase Flow |
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| LIU Ze-hua,GAO Ya-kui.Least Square Supportive Vector Machine(LS-SVM)-based Soft Measurement of the Gas Content in a Gas-liquid Two-phase Flow[J].Journal of Engineering for Thermal Energy and Power,2011,26(1). |
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| Authors: | LIU Ze-hua GAO Ya-kui |
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| Affiliation: | LIU Ze-hua,GAO Ya-kui(First Aircraft Designing and Research Institute,Aviation Industry Corporation of China(AVIC),Xi'an,China,Post Code: 710089) |
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| Abstract: | A multi-turn annulus tube was used for measuring the parameters of a gas-liquid two-phase flow,and the pressure difference fluctuation signals at both inside and outside of the riser section of the annulus tube along the horizontal direction were analyzed.A non-dimensional analytic method was used to obtain the characteristic value related to the mean square root of the pressure difference fluctuation signals and a model governing the relationship between the characteristic value in question and the volumet... |
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| Keywords: | soft measurement least square supportive vector machine genetic algorithm two phase flow pressure difference fluctuation signal gas content |
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