生产过程监测的多尺度定性特征因果推理方法

研究了利用小波变换提取过程检测信号变化的多尺度定性特征 ,分析和证明了提取的特征具有稳定性和表征工况区域的完备性 .提出一种多尺度因果推理模型 ,用于对提取的特征进行因果推理分析 .应用实例研究证实了所提出方法的可行性和有效性 .     

稳态目标优化的稳定MIMO约束预测控制

A two-stage multi-objective optimization model-predictive control algorithms(MPC) strategy is presented. A domain MPC controller with input constraints is used to increase freedom for steady-state objective and enhance stabilization of the controller. A steady-state objective optimization algorithm oriented to transient process is adopted to realize optimization of objectives else than dynamic control. It is proved that .the stabilization for both dynamic control and steady-state objective optimization can be guaranteed. The theoretical results are demonstrated and discussed using a distillation tower as the model. Theoretical analysis and simulation results show that this control stratek--v is efl$cient and provides a good strategic solution to uractical urocess control.     

混合量子遗传算法及其性能分析

首先比较了带量子门更新和群体灾变的量子算法(QA)以及加入对量子位的交叉和变异操作的量子遗传算法(QGA);然后结合量子搜索和传统遗传搜索提出了混合量子遗传算法的框架,并给出了基于二进制编码的混合量子遗传算法(BQGA)和基于实数编码的混合量子遗传算法(RQGA).基于典型问题的数值仿真和比较表明,RQGA的性能明显优于其他算法,对参数和初值具有较好的鲁棒性.     

基于增广森林结构的一般网络最小费用问题瓶颈分析

The bottleneck analysis of the minimum coat problem for the generalized netwok(MCPGN) is discussed.The analysis is based on the network simplex algorithm,which gains negative cost graphs by constructing augmented forest structure,then augments flows on the negative cost graphs until the optimal revolution is gained Bottleneck structure is presented after analyzing the augmented forest structure.The negative cost augmented graphs are constructed with the bottleneck structure.The arcs that block the negative cost augmented graph are the elements of the bottleneck.The bottleneck analysis for the generalized circulation problem,the minimum circulation problem and the circulation problem are discussed respectively as the basal problems,then that for MCPGN is achieved.An example is presented at the end.     

基于加权最小二乘的双线性系统的自适应控制及其应用

本文对一类双线性系统，用加权最小二乘辨识方法建立了自适应控制算法，该算法适用于非最小相位系统，且具有大范围渐近收敛和稳定的性质。从谷氨酸结晶过程的ｐＨ值控制实验表明，本文算法具有良好的控制效果，比非线性ＰＩＤ控制具有更高的控制质量。     

Bottleneck Analysis of the Minimum Cost Problem for the Generalized Network Based on Augmented Forest Structure

The bottleneck analysis of the minimum cost problem for the generalized network (MCPGN) is discussed. The analysis is based on the network simplex algorithm, which gains negative cost graphs by constructing augmented forest structure, then augments flows on the negative cost graphs until the optimal revolution is gained. Bottleneck structure is presented after analyzing the augmented forest structure. The negative cost augmented graphs are constructed with the bottleneck structure. The arcs that block the negative cost augmented graph are the elements of the bottleneck. The bottleneck analysis for the generalized circulation problem, the minimum circulation problem and the circulation problem are discussed respectively as the basal problems, then that for MCPGN is achieved. An example is presented at the end.     

多尺度小波变换提取趋向的异步航迹关联方法

传统的航迹关联方法都是基于雷达同步工作方式,但在实际的空中监视系统中,不同位置的雷达不可能同步工作。因此异步雷达目标航迹的关联更接近于实际。目标航迹数据序列实际上是一个含有多项式趋势的非平稳随机过程,利用小波变换提取这种趋势,比较两条航迹趋势的接近程度,进行异步航迹关联。理论分析和仿真实验表明,这种方法的关联正确率高,同步和异步方式下均可应用。     

催化裂化装置的建模及推理控制

在许多生产过程中,过程的输出量往往受到不可测量噪声的影响,为有效地克服这种影响,就要对这些不可测量的噪声进行估计。本文采用推理的方法来估计不可测量的噪声,并以催化裂化装置为例进行了实验研究,得到了一些实用的结果。     

虚拟蒸馏装置及软测量方法研究

利用HYSYS流程模拟软件建立虚拟常减压装置。为研究软测量方法提供准确、方便和科学的研究条件。通过对常减压装置负荷变化的真实模拟。探讨了负荷变化对软测量模型泛化能力影响和改进软测量模型的途径。针对基于RBF神经网络常减压装置汽油产品的干点软测量模型的负荷变化问题。提出的改进方法增强了其在实际生产过程应用的适应范围．有利于该方法在实际生产过程中的长期可靠应用。