Simulation of Automatic Position Control in an 8-High Cold Rolling Mill Hydraulic System

Abstract:

This paper presents the modelling and simulation of automatic position control (APC) in an 8-high cold rolling mill hydraulic system built by CERI (Capital Engineering and Research Incorporation). Key feature of the rolling mill APC system is introduced. From modelling, the servo valve and cylinder models are built, and from simulation the dynamic response of the system can be predicted for selecting system components and optimizing system performance. As system dynamic response is not only depending on the servo valve but also on all components in the system, root locus method is applied to analyze APC system dynamic response. Simulation results with different parameters are compared. Additionally, compared with a 6-high cold rolling mill APC system, the APC system dynamic responses of CERI 8-high rolling mill can reach better results than those obtained in the 6-high rolling mill system.

• Periodical: Advanced Materials Research (Volume 145)
• Pages: 193-197
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.145.193
• Online since: October 2010
• Authors: Lin Wang, Luo Ying Cheng
• Keywords: 8-High Cold Rolling Mill, APC, Hydraulic System, Modeling, Root Locus, Simulation

References

[1] D. Cheng: Handbook of Mechanical Design Fourth Edition (Chemical Industry Press, China 2001). (In Chinese).

[2] C. Wang: Hydraulic Control System (China Machine Press, China 2009). (In Chinese).

[3] L. Wang and L. Y. Cheng: submitted to The 10th International Conference on Steel Rolling (ICSR) (Beijing, China, September 15-17, 2010).

[4] J. Dorsey: Continuous and Discrete Control System Modeling, Identification, Design and Implementation (McGraw-Hill Companies, Inc., U.S.A. 2002).