| Issue |
Metall. Res. Technol.
Volume 118, Number 2, 2021
|
|
|---|---|---|
| Article Number | 215 | |
| Number of page(s) | 14 | |
| DOI | https://doi.org/10.1051/metal/2020095 | |
| Published online | 25 March 2021 | |
Regular Article
Dynamic modelling and linear quadratic sliding mode control of a multivariable looper system in hot strip mills
1
Institute of Manufacturing Engineering, HuaQiao University,
Xiamen
361021, PR China
2
Fujian Engineering Research Center of Intelligent Manufacturing for Brittle Materials,
Fujian
361021, PR China
* e-mail: yfc_ral@163.com
Received:
12
July
2020
Accepted:
22
December
2020
This paper introduces a linear quadratic sliding mode control (LQ-SMC) scheme into a looper control system. First, according to a 1700 mm tandem hot mill, the state-space dynamic model of the looper system was established, and then, the optimal control law of the looper system was obtained based on the established model. Finally, the optimal sliding mode and optimal sliding mode control law of the LQ-SMC scheme were designed such that the sliding motion could satisfy the optimal value of the quadratic performance index. Simulation results show that the proposed control scheme has complete robustness to external disturbances that satisfies certain conditions, and the coupling between the looper angle dynamic and strip tension dynamic is also minimized.
Key words: dynamic modelling / linear quadratic sliding mode control / looper and tension control / hot strip finishing mill
© EDP Sciences, 2021
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.