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SONG Kai; WANG Haiqing; LI Ping
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宋凯; 王海清; 李平
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Abstract: Product quality and operation cost control obtain increasing emphases in modern chemical system engineering. To improve the fault detection power of the partial least square (PLS) method for quality control, a new QRPV statistic is proposed in terms of the VP (variable importance in projection) indices of monitored process variables, which is significantly advanced over and different from the conventional Q statistic. QRPV is calculated only by the residuals of the remarkable process variables (RPVs). Therefore, it is the dominant relation between quality and RPV not all process variables (as in the case of the conventional PLS) that is monitored by this new VP-PLS (VPLS) method. The combination of QRPV and T2 statistics is applied to the quality and cost control of the Tennessee Eastman (TE) process, and weak faults can be detected as quickly as possible. Consequently, the product quality of TE process is guaranteed and operation costs are reduced.
Key words: partial least squares method, Tennessee Eastman process, statistical quality control, cost control, on-line monitoring
摘要: Product quality and operation cost control obtain increasing emphases in modern chemical system engineering. To improve the fault detection power of the partial least square (PLS) method for quality control, a new QRPV statistic is proposed in terms of the VP (variable importance in projection) indices of monitored process variables, which is significantly advanced over and different from the conventional Q statistic. QRPV is calculated only by the residuals of the remarkable process variables (RPVs). Therefore, it is the dominant relation between quality and RPV not all process variables (as in the case of the conventional PLS) that is monitored by this new VP-PLS (VPLS) method. The combination of QRPV and T2 statistics is applied to the quality and cost control of the Tennessee Eastman (TE) process, and weak faults can be detected as quickly as possible. Consequently, the product quality of TE process is guaranteed and operation costs are reduced.
关键词: 产品质量;成本控制系统;化工行业;美国;产品管理;田纳西州
SONG Kai, WANG Haiqing, LI Ping. VPLS Based Quality and Cost Control for Tennessee Eastman Process[J]. .
宋凯,王海清,李平. 基于VPLS的TE过程统计产品质量与费用控制[J]. CIESC Journal.
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https://hgxb.cip.com.cn/EN/Y2005/V13/I1/62