Parameter Identification and Control Scheme for Monitoring Automatic Thickness Control System with Measurement Delay
Joint Authors
Yang, Xu
Gao, Jingjing
Shardt, Yuri A. W.
Li, Linlin
Tong, Chao-nan
Source
Journal of Control Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-21
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Electronic engineering
Information Technology and Computer Science
Abstract EN
The thickness of the steel strip is an important indicator of the overall strip quality.
Deviations in thickness are primarily controlled using the automatic gauge control (AGC) system of each rolling stand.
At the last stand, the monitoring AGC system is usually used, where the deviations in thickness can be directly measured by the X-ray thickness gauge device and used as the input to the AGC system.
However, due to the physical distance between the thickness detection device and the rolling stand, time delay is unavoidably present in the thickness control loop, which can affect control performance and lead to system oscillations.
Furthermore, the parameters of the system can change due to perturbations from external disturbances.
Therefore, this paper proposes an identification and control scheme for monitoring AGC system that can handle time delay and parameter uncertainty.
The cross-correlation function is used to estimate the time delay of the system, while the system parameters are identified using a recursive least squares method.
The time delay and parameter estimates are then further refined using the Levenberg-Marquardt algorithm, so as to provide the most accurate parameter estimates for the complete system.
Simulation results show that, compared with the standard Proportion Integration Differentiation (PID) controller approach, the proposed approach is not affected by changes in the time delay and parameter uncertainties.
American Psychological Association (APA)
Yang, Xu& Gao, Jingjing& Shardt, Yuri A. W.& Li, Linlin& Tong, Chao-nan. 2017. Parameter Identification and Control Scheme for Monitoring Automatic Thickness Control System with Measurement Delay. Journal of Control Science and Engineering،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1173401
Modern Language Association (MLA)
Yang, Xu…[et al.]. Parameter Identification and Control Scheme for Monitoring Automatic Thickness Control System with Measurement Delay. Journal of Control Science and Engineering No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1173401
American Medical Association (AMA)
Yang, Xu& Gao, Jingjing& Shardt, Yuri A. W.& Li, Linlin& Tong, Chao-nan. Parameter Identification and Control Scheme for Monitoring Automatic Thickness Control System with Measurement Delay. Journal of Control Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1173401
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1173401