Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2001.07d
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- Pages.1929-1931
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- 2001
Molten steel level control of strip casting process using stable adaptive fuzzy control scheme
안정 적응 퍼지 제어기를 이용한 박판 주조 공정에서의 용강 높이 제어
Abstract
An adaptive fuzzy logic controller to regulate molten steel level in the strip casting process is presented, where parameters of fuzzy controllers are adapted stably by using Lyapunov-stability theory and a switching controller is used together to deal with the approximation error of fuzzy logic system. The level error is proven to converge to zero asymptotically. In the simulation, the clogging/unclogging of a stopper nozzle is considered and overcome by the proposed controller. Robustness to uncertainty is shown to be superior to conventional PI controller.
Keywords