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多模型预测控制在磨矿分级过程中的应用

, PP. 1715-1719

Keywords: 磨矿分级过程,罚函数,多模型预测控制

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Abstract:

磨矿分级过程的控制目标是将一、二级溢流浓度和细度稳定控制在质量指标区间内.磨矿分级过程是胖系统,完成动态优化目标后控制器仍有剩余自由度,因此需考虑局部稳态经济优化.针对这一目标,提出一种考虑局部稳态经济目标的多模型预测控制方案.首先,建立了基于现场数据库的球磨机和分级机传函矩阵模型;然后考虑局部经济性能,将稳态经济目标以罚函数形式嵌入动态优化目标函数;为消除球磨机换球引起的模型失配的影响,建立了一种基于换球规律的多模型切换策略.仿真结果表明了所提出控制方案的有效性.

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