分阶段调节过程的切换控制方法研究  

The research of switching method for multi-stage process

作　　者：黄冬 徐宝昌 罗雄麟 

机构地区：[1]中国石油大学(北京)信息工程学院,北京102249

出　　处：《计算机与应用化学》2016年第3期339-342,共4页Computers and Applied Chemistry

基　　金：国家重大专项(2011ZX05021-003);中国石油大学(北京)基本科研基金资助

摘　　要：工业过程中,生产计划发生变更,工况会出现大范围的调节,其往往采用分阶段调节的方式来实现切换过程。针对该现象中各阶段之间的切换控制问题,本文提出了2种优化切换时间点的方法。方法一基于离散模型的最优化方法,推导了调节时间最短的优化模型;方法二基于模型预测的实时切换方法,根据模型预测的思想克服了优化过程计算复杂和模型偏差对控制效果的影响。最后,通过实验仿真验证了该切换控制方法能够明显缩短整个过程的调节时间,提高生产效率。Staged adjustment is employed to modulate the operating condition on a large scale while the production planning changed violently. In this paper, the switching method of between each stage has been discussed, and two methods of obtaining the switching time point were proposed. One method was that deducing the model of time optimization employed the optimal way based on discrete model. Another adopted the real-time switching control based on model prediction and overcame the influence of calculation complexity and model deviation. Eventually, it was discovered that the latter could reduce the response time dramatically and improve production efficiency.

关 键 词：分阶段调节 切换控制 时间最短 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]