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자료유형
학술저널
저자정보
저널정보
한국생산제조학회 한국생산제조학회지 한국공작기계학회 논문집 Vol.13 No.4
발행연도
2004.8
수록면
44 - 55 (12page)

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In order to meet the requirement for higher thickness accuracy in tandem cold rolling processes, it is strongly necessary to have good performance in control units. To meet this requirement, this paper suggested an output regulating control system with a roll-eccentricity estimator for each rolling stand of tandem cold mills. Considering entry thickness variation and roll eccentricity simultaneously as the major disturbances, a synthesis of multivariable control systems was presented based on H∞ control theory, which could reflect the knowledge of input direction and spectrum of disturbance signals on design. Then, to effectively reject roll eccentricity, a weight function having some poles on the imaginary axis was introduced. This lead to a non-standard H∞ control problem, and the design procedures for solving this problem were analytically presented. The effectiveness of the proposed control method was evaluated through computer simulations and compared to that of the conventional linear quardratic control and feedforward control methods for roll eccentricity.

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Abstract
1. Introduction
2. Mathematical Model of TCM
3. Gaugemeter Thickness Prediction with On-line Estimation
4. Synthesis of the Output Feedback Control System
5. Computer Simulation and Performance Analysis
6. Conclusion
Appendix
Acknowledgement
References

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