搜索结果: 241-255 共查到“知识库 化工系统工程”相关记录404条 . 查询时间(3.523 秒)
With the unique ergodicity, irregularity, and special ability to avoid being trapped in local optima, chaos optimization has been a novel global optimization technique and has attracted considerable...
基于VPLS的TE过程统计产品质量与费用控制
产品质量 成本控制系统 化工行业
2009/3/9
Product quality and operation cost control obtain increasing emphases in modern chemical system engineering. To improve the fault detection power of the partial least square (PLS) method for quality c...
基于变长度移动窗口和HMM的工业过程故障在线诊断
隐马尔可夫模型 生产过程 在线诊断 人工神经网络
2009/3/9
An integrated framework is presented to represent and classify process data for on-line identifying abnormal operating conditions. It is based on pattern recognition principles and consists of a featu...
基于递归神经网络的多变量非线性PID解耦控制
非线性PID 递归神经网络 解耦控制 多变量
2009/3/9
A nonlinear proportional-integral-derivative (PID) controller is constructed based on recurrent neural networks. In the control process of nonlinear multivariable systems, several nonlinear
基于单气泡非稳膜机理的相际传质模型
薄膜理论 气体 液体 转移模式
2009/3/9
A gas-liquid mass transfer model based on an unsteady state film mechanism applied to a single bubble is presented. The mathematical model was solved using Laplace transform to obtain an analytical ...
基于定量反馈理论的多变量解耦预测控制及其在CSTR化学过程中的应用
quantitative feedback theory generalized predictive control decouple
2009/3/9
A novel method of incorporating generalized predictive control (GPC) algorithms based on quantitative feedback theory (QFT) principles is proposed for solving the feedback control problem of the highl...
基于多尺度分析与主元分析的聚丙烯熔融指数神经元软测量预报模型
多尺度分析 主元分析 聚丙烯
2009/3/9
Prediction of melt index （MI）, the most important parameter in determining the product＇s grade and quality control of polypropylene produced in practical industrial processes, is studied. A novel soft...
基于多核支持向量机的非线性模型预测控制
nonlinear model predictive control support vector machine with multi-kernel nonlinear system identification
2009/3/9
Multi-kernel-based support vector machine (SVM) model structure of nonlinear systems and its specific identification method is proposed, which is composed of a SVM with linear kernel function followed...
基于二阶矩封闭湍流模型的非预混湍流火焰的数值模拟
模拟技术 甲烷 氢气 燃烧过程
2009/3/9
Turbulent nonpremixed CH4/H2 flame has been simulated using several typical differential secondmoment turbulence closure (SMTC) models. To clarify the applicability of the various models, the LRR-IP ...
基于混杂策略的预测控制不可行与约束优先级处理
预控制模型 炼油工业 生产工艺 石油化工工业
2009/3/9
A hybrid approach using MLD (mixed logical dynamical) framework to handle infeasibility and constraint prioritization issues in MPC (model predictive control) based on input-output model is introduced...
A splicing system based genetic algorithm is proposed to optimize dynamical radial basis function (RBF) neural network, which is used to extract valuable process information from input output data. Th...
This study describes a classification methodology based on support vector machines (SVMs), which offer superior classification performance for fault diagnosis in chemical process engineering. The meth...
A three-dimensional Eulerian multiphase model, with closure law according to the kinetic theory of granular flow, was used to study the gas/solid flow behaviors in spout-fluid beds. The influences of...
基于模糊CMAC神经网络的4-CBA软测量
4-CBA 传感器 模糊神经网络系统 产品质量
2009/3/9
Soft sensor is attractive in dealing with online product quality measurement by virtue of other easily measured variables. In AMOCO PTA (purified tereph thalic acid) production process, the unavailabi...
A strategy for water and wastewater minimization is developed for continuous water utilization systems involving fixed flowrate (non-mass-transfer-based) operations, based on the fictitious operatio...