化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2015年
7期
2573-2580
,共8页
间歇过程%自优化控制%批间优化%最优性条件%系统工程
間歇過程%自優化控製%批間優化%最優性條件%繫統工程
간헐과정%자우화공제%비간우화%최우성조건%계통공정
batch process%self-optimizing control%batch-to-batch optimization%optimality condition%system engineering
针对间歇过程的实时优化问题,提出了一种基于最优性条件近似法的批间自优化控制策略。首先获取标称工作点的最优输入轨迹形态,将其参数化为少量决策变量,简化问题复杂度。然后根据参数化后的决策变量得到批间优化的最优性条件,并建立批次终端可测变量和最优性条件之间的回归模型,将其作为被控变量进行批间跟踪控制。对一个间歇反应器进行了仿真研究,结果表明方法能有效实现间歇过程的批间自优化控制。
針對間歇過程的實時優化問題,提齣瞭一種基于最優性條件近似法的批間自優化控製策略。首先穫取標稱工作點的最優輸入軌跡形態,將其參數化為少量決策變量,簡化問題複雜度。然後根據參數化後的決策變量得到批間優化的最優性條件,併建立批次終耑可測變量和最優性條件之間的迴歸模型,將其作為被控變量進行批間跟蹤控製。對一箇間歇反應器進行瞭倣真研究,結果錶明方法能有效實現間歇過程的批間自優化控製。
침대간헐과정적실시우화문제,제출료일충기우최우성조건근사법적비간자우화공제책략。수선획취표칭공작점적최우수입궤적형태,장기삼수화위소량결책변량,간화문제복잡도。연후근거삼수화후적결책변량득도비간우화적최우성조건,병건립비차종단가측변량화최우성조건지간적회귀모형,장기작위피공변량진행비간근종공제。대일개간헐반응기진행료방진연구,결과표명방법능유효실현간헐과정적비간자우화공제。
For real-time optimization of batch processes, a batch-to-batch self-optimizing control approach is proposed based on necessary conditions of optimality approximation method. Firstly, the nominal optimal input trajectory is numerically obtained, which is further parameterized as a few decision variables to simplify the problem complexity. Secondly, the optimality conditions for the batch-to-batch optimization problem are analyzed, from which regression models are built using terminal measurements. The obtained regression models are further adopted as controlled variables to be tracked from batch to batch. The proposed method is applied to a simulated batch reactor. The results show that the new method can realize batch-wise self-optimizing control efficiently.