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Intelligent control on Hot Strip coiling temperature

International Journal of Minerals,Metallurgy and Materials 2000年第2期14卷 147-150页

作者： Heping Liu Yanlong Zhao(Information Engineering School, University of Science and Technology Bejing, Beijing 100083, China)(Handan Iron & Steel (Group) Co, Handan 056015, China) Information Engineering School University of Science and Technology Beijing Beijing 100083 China Handan Iron and Steel (Group) Co. Handan 056015 China

A new intelligent control scheme for hot strip coiling temperature is presented. In this scheme, the prediction mode1 of finishing temperature and the presetting model of main cooling zone are establish based on BP neural network, the feed-forward open-loop control model of main cooling zone is constructed based on T-S fuzzy neural network, a new improved structure of T-S fuzzy neural network is developed, and the feedback close-loop control model of precision cooling zone is obtained based on fuzzy control. The effectiveness of the proposed scheme has been demonstrated by computer simulation with a satisfactory result.

关键词： coiling temperature control laminar cooling fuzzy control neural network, fuzzy neural network

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Mathematic modeling on flexible cooling system in hot strip mill

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Journal of Central South University 2014年第1期21卷 43-49页

作者：彭良贵刘相华赵宪明吴迪 State Key Laboratory of Rolling and Automation (Northeastern University)

A novel cooling system combining ultra fast cooling rigs with laminar cooling devices was *** on the different cooling mechanisms,a serial of mathematic models were established to describe the relationship between water flow and spraying pressure and the relationship between water spraying heat flux and layout of nozzles installed on the top and bottom cooling *** parameters were validated by measured *** transfer models including air convection model,heat radiation model and water cooling capacity model were detailedly *** addition,effects on cooling capacity by water temperature and different valve patterns were also ***,the comparison results from UFC used or not have been provided with respect to temperature evolution and mechanical properties of Q235B steel grade with thickness of 7.8 *** online application of the sophisticated CTC process control system based on these models,run-out table cooling control system has been running stably and reliably to produce resource-saving,low-cost steels with smaller grain size.

关键词： mathematic model ultra fast cooling laminar flow cooling variable frequency control coiling temperature control

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维普期刊数据库

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Element Tracking Strategies for Hot Strip Laminar Cooling control

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Journal of Iron and Steel Research International 2005年第3期12卷 18-21,27页

作者： HANBin ZHANGZhong-ping LIUXiang-hua WANGGuo-dong NortheasternUniversity Shenyang110004China PanzhihuaIronandSteelCo Panzhihua617062China

Feedforward control is the core to control function in the cooling process of hot strip. One of the most important tasks in feedforward control is to determine the arrival time of the strip at various locations on the runout table for effective control. Based on the principles of element tracking and tracking strategies for variable rolling speed and constant rolling speed, a simple diagonal tracking method for an existing hot strip mill was proposed and tested. The test results show that the proposed strategies are effective for improving tracking control.

关键词： laminar cooling hot strip element tracking coiling temperature control

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