流变仪测控系统的数据处理方法研究

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英文篇名：Research on data processing method of rheometer measurement and control system 作者：吕国芳 ; 常培晶 ; 田正宏 英文作者：Lü Guofang;CHANG Peijing;TIAN Zhenghong;College of Energy and Electrical Engineering,Hohai University;College of Water Conservancy and Hydropower Engineering,Hohai University; 关键词：相关系数剔除法 ; 加权最小二乘法 ; 流变仪 ; 测控系统 ; 线性回归 ; 粗大误差剔除法 英文关键词：correlation coefficient elimination method;;weighted least square method;;rheometer;;measurement and control system;;linear regression;;coarse error elimination method 中文刊名：XDDJ 英文刊名：Modern Electronics Technique 机构：河海大学能源与电气学院;河海大学水利水电学院; 出版日期：2019-01-29 17:53 出版单位：现代电子技术 年：2019 期：v.42;No.530 基金：国家自然科学基金资助项目(51279054);; 江苏省优势学科建设工程项目(YS11001)~~ 语种：中文; 页：XDDJ201903043 页数：4 CN：03 ISSN：61-1224/TN 分类号：181-184

摘要

在流变测控系统中,流变参数由扭矩值线性回归得到。为了弥补线性回归得到的斜率和截距对外界干扰容错性较差的缺陷,提出相关系数剔除法。该方法根据线性回归的相关系数抑制外界干扰,并在线性回归时应用加权最小二乘法。最后,利用现场测试的结果来评估数据处理的效果。结果表明,相关系数剔除法能够明显提高线性回归的相关系数,由加权最小二乘法得到的流变参数较普通最小二乘法更加稳定。
        The rheological parameters are obtained by means of linear regression of torque values in the rheological measurement and control system. Since the slope and intercept obtained by linear regression has poor tolerance for external disturbances,the correlation coefficient elimination method is proposed. This method can restrain the external interference according to the correlation coefficient of linear regression. The weighted least square method is used for linear regression. The result of field test is used to evaluate the effect of data processing. The result shows that the correlation coefficient elimination method can improve the correlation coefficients of linear regression obviously,and the rheological parameters obtained by weighted least square method are more stable than those of ordinary least square method.

引文

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