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Hydraulic Roll Gap Control (HRGC) system is a complex electro-hydraulic servo system with time-varying properties and nonlinear terms. This paper presents a novel method utilizing a nonlinear controller backstepping for a nonlinear HRGC system in a reversing cold rolling mill. By employing feedback from a position sensor, the controller ensures that the thickness of the rolled material remains consistent and within specified limits. The proposed controller by backstepping design not only achieves a significant reduction in thickness variability but also enhances production efficiency. Simulation results conducted in MATLAB/SIMULINK demonstrate a marked improvement in performance, confirming the effectiveness of the proposed design and its potential impact on industry applications.

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Design of a Non-linear Backstepping Controller for Hydraulic RGC System in Cold Rolling Mill

  • 会议论文

  • 发表日期：

    2025年

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  • Abdelmajid Akil,
  • Ayoub Nouaiti,
  • Nabila Rabbah

摘要

Hydraulic Roll Gap Control (HRGC) system is a complex electro-hydraulic servo system with time-varying properties and nonlinear terms. This paper presents a novel method utilizing a nonlinear controller backstepping for a nonlinear HRGC system in a reversing cold rolling mill. By employing feedback from a position sensor, the controller ensures that the thickness of the rolled material remains consistent and within specified limits. The proposed controller by backstepping design not only achieves a significant reduction in thickness variability but also enhances production efficiency. Simulation results conducted in MATLAB/SIMULINK demonstrate a marked improvement in performance, confirming the effectiveness of the proposed design and its potential impact on industry applications.