化工学报2019，Vol.70Issue(5)：1848-1857,10.DOI:10.11949/j.issn.0438-1157.20181306
化工过程大范围工况变化的工况迁移控制策略判定
Judgement of process transition control strategies for large-range conditions change of chemical processes
摘要
Abstract
When the chemical process changes in a wide range of working conditions, the complex migration control strategy will bring certain operational uncertainty, so it is necessary to make a selection decision on the control strategy. Intuitively, the simplest approach for the judgment of control strategies is mapping the relationship between the production index and the factors which cause the process transition. The fitting error of the mapping relationship is obvious for complicated chemical processes. The intermediate variables are introduced for decreasing fitting error, and intermediate variables based judgment method is proposed for complicated chemical processes. In details, there are three basic principles for building the intermediate variables. Firstly, the intermediate variables consist of measurable process variables; secondly, the intermediate variables are insensitive to the type of process transition factors; thirdly, the intermediate variables are sensitive to the production index of the process system. Furthermore, based on the simulation of a commercial ethylene column, the introduction of the intermediate variables is beneficial to decrease the estimation error of production index. The usability of the intermediate variables based judgment method is verified for the control of large-range conditions change.关键词
过程系统/化工过程/过程控制/动态优化/工况迁移Key words
process system/chemical processes/process control/dynamic optimization/process transition分类
化学化工引用本文复制引用
黄冬,罗雄麟..化工过程大范围工况变化的工况迁移控制策略判定[J].化工学报,2019,70(5):1848-1857,10.基金项目
国家自然科学基金项目(21676295) （21676295）
