复杂工业过程建模、仿真与优化控制应用研究
文献类型：学位论文
| 作者 | 史运涛 |
| 学位类别 | 工学博士 |
| 答辩日期 | 2006-05-30 |
| 授予单位 | 中国科学院研究生院 |
| 授予地点 | 中国科学院自动化研究所 |
| 导师 | 高东杰 |
| 关键词 | WFGD 模糊TS模型 混合逻辑动态模型 自抗扰控制 无模型控制 Wet Flue Gas Desulphurization Fuzzy TS Model Mixed Logical Dynamic Active Disturbance Rejection Controller Model Free Controller |
| 其他题名 | studies on Modeling、Simulation and Application of Optimal Control for Complex Industry Process |
| 学位专业 | 控制理论与控制工程 |
| 中文摘要 | 本论文的主要内容是以湿法烟气脱硫过程的建模、仿真、控制与优化操作研究为实际的案例，试图得出对于复杂工业过程建模，仿真，与优化控制的一般性结果。 本论文研究工作的主要贡献有以下几点： (1)在深入研究湿法烟气脱硫（WFGD）的工艺和机理基础上，对于模型机理清楚部分建立系统的机理模型，对于机理复杂、存在不完备知识部分，结合系统的定性知识和系统在工作点处的小样本数据，综合运用统计建模方法、系统辨识方法和基于聚类分析的模糊TS模型的建模方法，建立了电厂WFGD过程的定量，定性混合模型，实现了系统的仿真。 (2)针对WFGD过程中存在的连续动态和逻辑、离散变量（循环浆液泵，氧化风机的on/off switch），以及吸收塔浆液的PH值对象和吸收塔吸收率对象的非线性特性（可以表示成分段线性仿射系统）等情况，建立吸收塔吸收率对象的混合逻辑动态（MLD）模型描述； (3)在正常工况情况下考虑了WFGD系统经济性最优问题，基于吸收塔吸收率的MLD模型，运用混合整数二次规划方法（MIQP）求解WFGD过程的标准优化问题，即，在保证吸收率满足要求下的最优PH值设定，以及循环浆液泵的开启（ON）的最佳台数，实现系统的在线优化(Real Time Optimization)；并且建立了吸收塔PH值单元的混合逻辑动态模型（MDL），基于吸收塔PH值的MLD模型设计了预测控制器计，实现了对于WFGD过程优化单元的最优的PH设定值的快速跟踪控制； (4)主要介绍了两种基于I/O数据控制器设计方法—自抗扰控制和无模型控制技术的实际工程化研究。主要是深入研究了复杂工业过程控制器设计的功能组合途径，结合智能控制和自适应控制方法，提出了几种具备对付强干扰，大时滞，多变量耦合的功能单元以及其具体实现算法和功能组合的方法。 |
| 英文摘要 | In this thesis ,the topic come from the control engineering practice and the development of the Distributed Control System simulation of wet flue gas desulphurization in power plant. During the process, the following problem is solved: (1) During the development of simulation model of wet flue gas desulphurization (WFGD) in power plant the ordinary differential equations model is developed for the part about which the knowledge is completed .On the other hand, Based on step response, a new direct robust least square identification technique is used to identify the dynamics of the sub model of WFGD process. Using qualitative knowledge and few data samples a fuzzy T-S model is also developed for the part about which the complete knowledge is not obtained. A hybrid real-time simulation model of WFGD is obtained (2) Mixed logical dynamics model is build to describe hybrid phenomenon of the WFGD such as the LG pump and Oxidation pump’s on/off switch and the nonlinear dynamics(which can be converted to piece-wise-affine linear system).(3) The optimization problem of WFGD in the normal condition of the process is formulated. Based on the mixed logic dynamics model of WFGD, the optimization problem is solved using the Mixed Integer Quadratic program (MIQP) solver. Therefore the optimal discrete decision variable of number of LG pump ‘on’ and the continuous variable decision variable of PH set are also obtained on line. The real-time optimization is implemented. A MLD model of PH is also developed based on which the predictive control of PH is designed. The predictive controller based on MLD model has the good closed loop performance.(4) based on I/O two controller design technology is studied —Auto Disturbance Reject Controller (ADRC) and Model Free Controller (MFC). The basic Design technique and the rules of the adjusting parameters of controllers have been studied. The main work is concentrated on the application of the two controllers in complex industry process. |
| 语种 | 中文 |
| 其他标识符 | 200318014602983 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/5922]  |
| 专题 | 毕业生_博士学位论文 |
| 推荐引用方式 GB/T 7714 | 史运涛. 复杂工业过程建模、仿真与优化控制应用研究[D]. 中国科学院自动化研究所. 中国科学院研究生院. 2006. |
入库方式： OAI收割
来源：自动化研究所
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