Hybrid Intelligent Forecasting Method of the Laminar Cooling Process for Hot Strip

To overcome the difficulties of frequently varying operating conditions of laminar cooling processes and of measuring the strip temperature in the cooling process online, a hybrid intelligent forecasting approach of the strip temperature was developed, which combines mathematic and hybrid intelligent methods. The proposed approach is based on the hybrid multi-intelligence technology, where the RBF neural networks, CBR and fuzzy logic reasoning have been used to obtain the parameter estimates, with which a desired prediction on the coiling temperatures has been obtained together with the cooling temperature curve in the cooling process. A number of tests using industrial data have been conducted where desired numerical results have been obtained. It has been shown that the proposed algorithm has a high potential of being used to realize an effective control of the whole process.

[1]  Michio Sugeno,et al.  Fuzzy identification of systems and its applications to modeling and control , 1985, IEEE Transactions on Systems, Man, and Cybernetics.

[2]  L. Biegler,et al.  Simultaneous solution and optimization strategies for parameter estimation of differential-algebraic equation systems , 1991 .

[3]  Han-Xiong Li,et al.  Multivariable fuzzy supervisory control for the laminar cooling process of hot rolled slab , 2001, IEEE Trans. Control. Syst. Technol..

[4]  Hiroyuki Watanabe,et al.  Application of a fuzzy discrimination analysis for diagnosis of valvular heart disease , 1994, IEEE Trans. Fuzzy Syst..

[5]  Stephen L. Chiu,et al.  Fuzzy Model Identification Based on Cluster Estimation , 1994, J. Intell. Fuzzy Syst..

[6]  G. van Ditzhuijzen,et al.  The controlled cooling of hot rolled strip: a combination of physical modeling, control problems and practical adaption , 1993, IEEE Trans. Autom. Control..

[7]  Chai Tianyou,et al.  INTELLIGENT OPTIMIZATION CONTROL FOR LAMINAR COOLING , 2002 .

[8]  John Villadsen,et al.  A family of collocation based methods for parameter estimation in differential equations , 1982 .

[9]  M.A. Simaan,et al.  Water cooled end-point boundary temperature control of hot strip via dynamic programming , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[10]  Marwan A. Simaan,et al.  Water cooled end-point boundary temperature control of hot strip via dynamic programming , 1997 .

[11]  Siamak Serajzadeh,et al.  Modelling of temperature history and phase transformations during cooling of steel , 2004 .

[12]  Roger C. Schank,et al.  Dynamic memory - a theory of reminding and learning in computers and people , 1983 .

[13]  James D. Keeler,et al.  Layered Neural Networks with Gaussian Hidden Units as Universal Approximations , 1990, Neural Computation.

[14]  Remn-Min Guo Modelling and simulation of run-out table cooling control using feedforward-feedback and element tracking system , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[15]  J. Varah A Spline Least Squares Method for Numerical Parameter Estimation in Differential Equations , 1982 .

[16]  Raphael T. Haftka,et al.  Recent developments in structural sensitivity analysis , 1989 .

[17]  Chai Tianyou APPLICATION OF RBF NEURAL NETWORKS IN CONTROL SYSTEM OF THE SLAB ACCELERATING COOLING PROCESS , 2000 .

[18]  Agnar Aamodt,et al.  Case-Based Reasoning: Foundational Issues, Methodological Variations, and System Approaches , 1994, AI Commun..

[19]  Sankar K. Pal,et al.  Unsupervised feature evaluation: a neuro-fuzzy approach , 2000, IEEE Trans. Neural Networks Learn. Syst..

[20]  R. Fletcher,et al.  Hybrid Methods for Nonlinear Least Squares , 1987 .

[21]  Guangjun Liu,et al.  Coiling temperature control of hot steel strip using combined feedforward, feedback and adaptive algorithms , 2005, Proceedings of 2005 IEEE Conference on Control Applications, 2005. CCA 2005..

[22]  C SchankRoger,et al.  Dynamic Memory: A Theory of Reminding and Learning in Computers and People , 1983 .

[23]  Günther Woelk,et al.  Influencing the formation of the steel structure by suitable temperature control in the run-out sections of hot-strip mills , 1991 .

[24]  Peter E. Hart,et al.  Nearest neighbor pattern classification , 1967, IEEE Trans. Inf. Theory.