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A Modified Outlier Detection Method in Dynamic Data Reconciliation 被引量:1
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作者 周凌柯 苏宏业 褚健 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第4期542-547,共6页
Data reconciliation technology can decrease the level of corruption of process data due to measurement noise, but the presence of outliers caused by process peaks or unmeasured disturbances will smear the reconciled r... Data reconciliation technology can decrease the level of corruption of process data due to measurement noise, but the presence of outliers caused by process peaks or unmeasured disturbances will smear the reconciled results. Based on the analysis of limitation of conventional outlier detection algorithms, a modified outlier detection method in dynamic data reconciliation (DDR) is proposed in this paper. In the modified method, the outliers of each variable are distinguished individually and the weight is modified accordingly. Therefore, the modified method can use more information of normal data, and can efficiently decrease the effect of outliers. Simulation of a continuous stirred tank reactor (CSTR) process verifies the effectiveness of the proposed algorithm. 展开更多
关键词 data reconciliation outlier detection gross error
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基于鲁棒估计的动态数据校正方法 被引量:6
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作者 孔明放 陈丙珍 +1 位作者 王健 胡山鹰 《计算机与应用化学》 CAS CSCD 北大核心 2002年第6期763-767,共5页
针对目前动态数据校正方法存在的缺陷,本文在以前的工作基础上把基于鲁棒估计原理构造的鲁棒估计函数用于含异常点类型的过失误差的数据校正。Monte Carlo模拟结果及对TE问题的校正计算结果表明,这种基于鲁棒估计的过失误差侦破和数据... 针对目前动态数据校正方法存在的缺陷,本文在以前的工作基础上把基于鲁棒估计原理构造的鲁棒估计函数用于含异常点类型的过失误差的数据校正。Monte Carlo模拟结果及对TE问题的校正计算结果表明,这种基于鲁棒估计的过失误差侦破和数据协调同步方法可以在得到协调数据的同时很准确的侦破和识别出测量数据中所含的过失误差,具有较强的优越性。 展开更多
关键词 动态数据校正 鲁棒方法 MONte CARLO模拟 te问题 工业测量数据 误差
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