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Journal of Central South University of Technology

, Volume 12, Issue 6, pp 699–704 | Cite as

Modeling and identification of HAGC system of temper rolling mill

  • He Shang-hong Email author
  • Zhong Jue 
Article

Abstract

Including servo valve, hydraulic cylinder, mill and sensor and ignoring nonlinear factors, the linear dynamic model of hydraulic automatic gage control (HAGC) system of a temper rolling mill was theoretically derived. The order of the model is 4/4, and can be reduced to 2/2. Based on modulating functions method, utilizing numerical integration, we constructed the equivalent identification model of HAGC, and the least square estimation algorithm was established. The input and output data were acquired on line at temper rolling mill in Shangshai Baosteel Group Corporation, and the continuous time model of HAGC system was estimated with the proposed method. At different modulating window intervals, the estimated parameters changed remarkably. When the frequency band-width of modulating filter matches that of estimated system, the parameters can be estimated accurately. Finally, the dynamic model of the HAGC was obtained and validated based on the spectral analysis result.

Key words

hydraulic automatic gage control modeling identification temper rolling mill 

CLC number

TH137 

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Copyright information

© Central South University 2005

Authors and Affiliations

  1. 1.School of Automobile and Mechanical EngineeringChangsha University of Science and TechnologyChangshaChina
  2. 2.School of Mechanical and Electrical EngineeringCentral South UniversityChangshaChina

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