Modeling and multivariable active disturbance rejection control of hydraulic looper multivariable system

Document Type : Research Note

Authors

1 1.Institute of Manufacturing Engineering , HuaQiao University, Xiamen 361021,China 2.Fujian Engineering Research Center of Intelligent Manufacturing for Brittle Materials, Fujian 361021, China

2 1. Institute of Manufacturing Engineering , HuaQiao University, Xiamen 361021,China 2. Fujian Engineering Research Center of Intelligent Manufacturing for Brittle Materials, Fujian 361021, China

3 College of Information Science and Engineering, HuaQiao University, Xiamen 361021,China

Abstract

Controlling the looper height and strip tension is important in hot strip mills, because these variables affect both the strip quality and strip threading. Many researchers have proposed and applied a variety of control schemes for this problem, but the increasingly strict market demand for strip quality requires further improvements. This paper describes a multivariable active disturbance rejection control (MADRC) strategy that realizes the decoupling control of a hydraulic looper multivariable system. Simulation experiments for a traditional proportion- integration (PI) controller and the proposed MADRC controller were conducted using MATLAB/Simulink software. The simulation results show that the proposed MADRC ensures good robustness and adaptability under modeling uncertainty and external disturbance .It is concluded that the designed MADRC controller produces better dynamic performance than the traditional PI controller, and the proposed looper control system is effective and practical.

Keywords

Main Subjects

References

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Scientia Iranica
Volume 25, Issue 6
Transactions on Chemistry (C)
November and December 2018
Pages 3401-3413

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