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This paper proposes a framework for quality-based fault detection and diagnosis for nonlinear batch processes with multimode operating environment. The framework seeks to address 1) the mode partition problem using a kernel fuzzy C-clustering method, and the optimal cluster number will be guaranteed by a between-within proportion index; 2) the diagnosis problem using a contribution rate method based...
Oxygen volume is the most important control in BOF (Basic Oxygen Furnace) steelmaking production and the control accuracy affects the quality of liquid steel directly. In this study, a CBR (Case-based Reasoning) method is adopted to calculate the oxygen blowing volume in the second period of BOF steelmaking production. When retrieve the similar cases from the case base, a similarity reward and punish...
In this paper, a new scheme for wavelet-based force feed-forward automatic gauge control (WFFF-AGC) based on multi-resolution decomposition using wavelets is proposed to improve the conventional automatic gauge control (AGC). Multi-resolution provides a variable resolution time-frequency distribution for the roll force of F1 -F6stand, then signals containing hardness information are converted into...
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