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Application of Temperature Inference Method Based on Soft Sensor Technique to Plate Production Process

DING Jing-guo , QU Li-li , HU Xian-lei , LIU Xiang-hua

钢铁研究学报(英文版)

There is a certain extent of measuring error for each pyrometer in plate production process, which has a great impact on process control system. A soft sensor technique is used to calculate the confidence interval of measuring temperature data from pyrometers and an inference estimator is designed by partial least square method, then the pyrometer with highest confidence is considered as the reference one, with which inference estimation for measured data on-line of other pyrometers is started and the measuring error is conformed. From actual application it can be found that this method can improve the measuring accuracy by 3%-5%, and has high field application value.

关键词: plate mill , soft sensor , temperature inference , partial least square

Analysis of Process Control Model of Plate MAS Rolling

ZHU Fu-wen , HU Xian-lei , ZHAO Zhong

钢铁研究学报(英文版)

Viewpoint that using the identification quantity to identify the long ear disfigurement was brought up, and by calculation, it can be deduced that identification quantity should be set as the quantity of long ear disfigurement of the position which is about 0.2 times of plate width to the plate border. Conception of plate head tiny cell was brought up, and the long ear disfigurement was uncoupled into the product of elongation percentage and length of tiny cell. On the base of prediction of long ear disfigurement, process control model of MAS rolling was built up, and application indicates that it can fit the on-line producing and eliminate the long ear disfigurement commendably

关键词: plate;plan view pattern;MAS rolling;long ear disfigurement;head disfigurement

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