Study on Roller Eccentricity Compensation in a Cold Mill

Abstract:

With the increase request of strip quality, the roller eccentricity has become the important factor of influencing product quality. On the practical model of Cold-rolling Mill of 300, this paper establishes eccentricity compensation control practice of Cold-rolling Mill of 300 which applies wavelet transform method. Based on mufti-resolution decomposition of roll force signal by use of wavelets, eccentricity signals are separated from disturbances and noise,and self-optimization is employed to real-time control the roller eccentricity. The results show that the method is effective.

• Periodical: Applied Mechanics and Materials (Volumes 84-85)
• Pages: 378-381
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.84-85.378
• Online since: August 2011
• Authors: Qi Ming Gao, Li Li Wu, Guo Qing Zhao
• Keywords: Cold Mill, Denoise, Eccentricity Compensation, Wavelet Transform (WT)

References

[1] Raghuveer M. Rao, Ajit S. Bopardikar. Wavelet Transforms: Introduction to Theory and Applications. Prentice Hall PTR, pp.100-105, (1998).

[2] Hung M, Fang X K, Wang J H, et al. Roll Eccentricity Compensation Control for Strip Rolling Mills Based on Wavelet Packet Denoising Theory[A]. WCICA 2004-Fifth World Congress on Intelligent Control and Automation Conference Proceedings[C]. Hangzhou: Institute of Electrical and Electronics Engineers Inc Press, pp.3565-3569, (2004).

DOI: 10.1109/wcica.2004.1343211

[3] Du J Y, Hou Y B. Roller Eccentricity Estimation Based on Improving Prony Method [A]. Proceedings of the IASTED International Conference on Modeling, Simulation and Optimization [C]. Kauai: Acta Process, 332-335, (2004).

[4] Kugi Andreas, Haas Wemer, Schlacher Kurt, et al．Active Compensation of Roll Eccentricity in Rolling Mills [J]. IEEE Transactions on Industry Applications 36(2), pp.625-632, (2000).

DOI: 10.1109/28.833781