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Online Parameter Optimization-Based Prediction for Converter Gas System by Parallel Strategies

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4 Author(s)
Jun Zhao ; Sch. of Control Sci. & Eng., Dalian Univ. of Technol., Dalian, China ; Wei Wang ; Pedrycz, W. ; Xiangwei Tian

Linz Donawitz converter gas (LDG) is one of the most important sources of fuel energy in steel industry, whose reasonable use plays a crucial role in energy saving and environment protection. In practice, online prediction of variation of gas holder level and gas demand by users is fundamental to gas utilization and scheduling activities. In this study, a least square support vector machine-based prediction model combined with the parallel strategies is proposed, in which parameter optimization is realized online by a parallel particle swarm optimization and a parallelized validation method, both being implemented with the use of a graphic processing unit. The experiments demonstrate that the online parameter optimization based model greatly improves the prediction quality compared to the version with the fixed modeling parameters. Furthermore, the parallelized strategies largely reduce the computational cost thus guaranteeing the real-time effectiveness of the practical application.

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:20 ,  Issue: 3 )

Date of Publication:

May 2012

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