检索结果-南通市图书馆

第32届中国控制与决策会议

作者： Zhao Luping Huang Xin Wang Shu chang yuqing College of Information Science and Engineering Northeastern University

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

In batch processes,in order to meet different market demands,multiple operating conditions are required in the same production process,which forms a variety of process *** addition,the operating conditions in each batch process also have multi-phase ***,different batch processing modes and different batch phase may have different behaviors and affect the final product *** on the multi-phase residual recursive in a single mode,a two-direction residual recursive model is established for multi-phase and multi-mode batch processes in this ***,a phase mean model is established to represent the process variable correlations for the entire *** to the multi-phase characteristics,the residual prediction quality of each phase is obtained by *** recursion is repeated in the within-batch *** the same modeling strategy is applied for the inter-mode direction,and the two-direction residual recursive model for multi-phase and multi-mode batch processes is *** application to the injection molding process has proved the effectiveness of the proposed method.

关键词： Multi-mode Multi-phase Residual recursive model Inter-mode modeling Quality prediction

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

PCA-SDG based Fault Diagnosis on CAPL Furnace Temperature System

PCA-SDG based Fault Diagnosis on CAPL Furnace Temperature Sy...

引用

第25届中国控制与决策会议

作者： Yunsong Lu Fuli Wang yuqing chang Mingxing Jia Min Zhu School of Information Science and Engineering Northeastern University State Key Laboratory of Integrated Automation of Process Industry Northeastern University

ISBN: (纸本)9781467355339

PCA-SDG based fault diagnosis method and its application on Continuous Annealing Process Line （CAPL） furnace temperature system are mainly discussed. Principle component analysis （PCA） method is applied to build the process monitoring model with a large number of historical data under normal operation conditions. High-dimension process data with noise and linear correlation are projected onto low-dimension and orthogonal sub-space. Real-time monitoring of furnace temperature system is carried out through online calculating T2 and SPE statistics of PCA model. When a fault is detected, the signed directed graph （SDG） model of furnace temperature system is used to interpret the residual contributions of PCA model, and then perform fault diagnosis with the rules of SDG. PCA-SDG method combines the advantages of both PCA and SDG methods. The effectiveness and reliability of the proposed PCA-SDG method are verified by the simulations.

关键词： PCA SDG CAPL Process Monitoring Fault Diagnosis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Soft Sensor Modeling of Process Industrial Process with Uncertain Information 32

Soft Sensor Modeling of Process Industrial Process with Unce...

引用

第32届中国控制与决策会议

作者： chang yuqing Xu Diwu Feng Wanjun Wang Shu Zhao Luping School of information science and engineering Northeaster University Chongqing Silian measurement and control technology co.LTD

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

A soft-sensing model for key parameters of process industry driven by both qualitative and quantitative information is proposed,which aims at the characteristics that key parameters in process industry can not be measured online,multi-sub-processes,qualitative information and quantitative information *** the sub-processes with quantitative information as the main part,a small amount of qualitative information in the process is quantified,and the sub-process model is established by data-based modeling method;for the sub-processes with qualitative information as the main part,a small amount of quantitative information in the process is quantified,and the sub-process model is established by knowledge-based modeling *** soft sensing results of the final key parameters are obtained by using the model *** on the hydrometallurgical process,a hybrid soft sensor model based on case-based reasoning（CBR） and RBF network in series is *** simulation results show that the model is effective.

关键词： hydrometallurgy gold mud grade qualitative information quantitative information soft sensing

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

窃听信道相关条件下最大比传输技术安全分析

引用

信号处理 2020年第10期36卷 1784-1788页

作者：常玉晴芮贤义苏州大学电子信息学院江苏苏州215006

在无线通信系统的实际传输中,当窃听用户距离合法接受者足够近,或者位于合法接收机信号的无线电波路径上时,就会出现主信道与窃听信道相关的场景。为此我们考虑一个多输入单输出,并且存在一个单天线被动窃听者的无线通信系统,研究了当... 详细信息

在无线通信系统的实际传输中,当窃听用户距离合法接受者足够近,或者位于合法接收机信号的无线电波路径上时,就会出现主信道与窃听信道相关的场景。为此我们考虑一个多输入单输出,并且存在一个单天线被动窃听者的无线通信系统,研究了当基站采用最大比发射技术发送信号时,相关对系统性能的影响。推导了安全中断概率与平均安全容量的闭合表达式。数值仿真结果表明:(1)当主信道的信道质量高于窃听信道时,较低的相关对系统安全中断概率性能影响不大,然而强相关却能够带来更低的安全中断概率;(2)这种相关对系统平均安全容量始终是有害的,且随着相关程度的增强,最大比发射技术相对于发射天线选择技术的优势逐渐变小。

关键词：信道相关窃听最大比发射安全中断概率平均安全容量

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of caffeic acid phenethyl ester on proliferation of vascular smooth muscle cells in rats

引用

Journal of Nanjing Medical University 2006年第6期20卷 355-359页

作者： Gang Yang Chao chang yuqing Wang Yibo Feng ShuLing Rong Department of Cardiology Union hospital Tong ji Medical College of Huazhong University of Science and Technology Wuhan 430022 China

Objective： To investigate the inhibitory effect of caffeic acid phenethyl ester（CAPE） on the proliferation of vascular smooth muscle cells （VSMC） activated by lipopolysaccharide （LPS） and to clarify its mechanism. Methods： VSMC activated by LPS （1 mg-L^-1） were treated with CAPE at different concentrations. The inhibitory effecfs of CAPE on the proliferation of VSMC were determined by methabenzthiazuron（MTT） colorimetry. The effects of CAPE on the expression of proliferating cell nuclear antigen （PCNA） and Survivin protein in VSMC were evaluated by immunocytochemistry staining technique （SABC method）. Cell cycle was analyzed by flow cytometry（FCM） with propidiumiodide （PI） labeling method. The relative expression level of Survivin mRNA was measured with real-time quantified RT-PCR technique. Results. CAPE exerted significant inhibitory effects on. proliferation of VSMC at concentrations ranging from 5 mg·L^-1 to 80 mg·L^-1, decreased the rate of cells positive for PCNA and Survivin protein and repressed the expressioh of Survivin mRNA in a dose- and time-dependent manner （P 〈 0.05）. FCM analysis displayed that CAPE up-regulated the ratio of G0/G1 stages and reduced the percentage of VSMC in S stage （P 〈 0.05）. Conclusion： CAPE can significantly inhibit the proliferation of VSMC activated by LPS in a dose- and time-dependent manner, which may be carded out through regulating cell cycle and repressing the expression of PCNA and Survivin.

关键词： Effect of caffeic acid phenethyl ester vascular smooth muscle cells proliferation survivin proliferating cell nuclear antigen

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on Plant-Wide Optimization Based on Interval Number for Gold Hydrometallurgical Process

Study on Plant-Wide Optimization Based on Interval Number fo...

引用

第30届中国控制与决策会议

作者： Yadong Liu yuqing chang Dapeng Niu Fuli Wang College of Information Science and Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries(Northeastern University)

Considering the difficulty of accurate online-measurement of some key variables in hydrometallurgy plant-wide production process,which leads to process modeling difficult and optimization control based on conventional plant-wide optimization methods is difficult to realize,it is very necessary to establish an accurate plant-wide optimization model of the gold hydrometallurgical process.A plant-wide optimization method based on interval number is proposed for realizing the gold hydrometallurgy plant-wide process modelling and optimization in this *** using interval numbers to replace the key variables that cannot be measured,the established plant-wide optimization model can further satisfy with practical productive ***,considering the optimization solution based on non-linear mechanism model is very time-consuming,a back propagation neural network is constructed and used to represent the local procedures models in this ***,a second-order oscillation partical swarm optimization（PSO） algorithm with high gloval convergence is used to solve the optimization *** results indicate that the proposed model has a better optimization performance in gold hydrometallurgical process.

关键词： hydrometallurgy plant-wide optimization interval number neural network PSO

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

引用

第37届中国控制会议

作者： Yan Liu Ruicheng Ma Fuli Wang yuqing chang College of Information Science & Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University School of Mathematics Liaoning University

To pursue high comprehensive economic benefit, the online operating performance assessment becomes more and more critical for industrial processes. In this study, a novel performance related information-based operating performance assessment method is proposed for multiphase batch processes. To describe the effects of the process characteristics of different phases on the operating performance of the batch process, the assessment models are established based on total projection to latent structures（T-PLS） for each phase. Then the similarity between the performance related information of the online data and the assessment model of the corresponding phase is calculated and used to define the assessment index for online assessment. When the operating performance is nonoptimal, the responsible variables can be identified by the variable contribution-based nonoptimal cause identification method, which does not need any help of the expert knowledge. Finally, the effectiveness of the proposed assessment method is demonstrated through the fed-batch penicillin fermentation process.

关键词： Batch processes operating performance assessment performance related information nonoptimal cause identification

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Operating Performance Assessment Based on GMM-GPR for Gold Hydrometallurgy Processes

Operating Performance Assessment Based on GMM-GPR for Gold H...

引用

第30届中国控制与决策会议

作者： Yan Liu Fuli Wang yuqing chang Shuyu Cai College of Information Science & Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries (Northeastern University)

The process operating performance assessment for industrial processes is a crucial problem and has attracted tremendous attention from academia and industry recently. In this study, a novel operating performance assessment method based on Gaussian mixture model and Gaussian process regression（GMM-GPR） is proposed. Only a single assessment model covering the characteristics of different performance grades is established based on GMM-GPR, which avoids the data division of different performance grades and error evaluations due to the wrong assessment model invoked. In online assessment, the assessment index constructed by the predicted value of the comprehensive economic index is used to evaluate the operating performance of the process, which is more general for actual production process and easy to apply. The effectiveness of the proposed method is verified though the gold hydrometallurgy process.

关键词： Operating performance assessment Gaussian process regression Bayesian inference Gold hydrometallurgy process

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Research on Modeling of Wind Speed-Power Curve for Wind Farm

Research on Modeling of Wind Speed-Power Curve for Wind Farm

引用

第32届中国控制与决策会议

作者： Xu Haiyan chang yuqing Wang Shu Yao Yuan College of Information Science and Engineering Northeastern University State Grid Liaoning Electric Power Co.Ltd

High-precision wind power prediction is an important method to ensure the safety and stability of wind power *** power curve of wind farm plays an important role in the prediction of wind *** this paper,the data selection of wind speed-power curve modeling and the fitting of wind speed power curve are ***,twodimensional kernel density estimation method is used to eliminate the abnormal data in the wind ***,a method combined Bines with polynomial fitting（Bins-Polynomial） is proposed to estimate the speed-power ***,the Bins-Polynomial method is compared with the other three methods,and the results show that the accuracy of the BinsPolynomial method is higher,which can improve the accuracy of wind power prediction.

关键词： Wind farm modeling Speed-power curve Kernel density estimation Bines Polynomial

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

湿法冶金萃取组分含量混合建模方法的研究

引用

仪器仪表学报 2009年第2期30卷 267-271页

作者：贾润达毛志忠常玉清东北大学信息科学与工程学院沈阳110004 东北大学流程工业综合自动化教育部重点实验室沈阳110004

由于缺乏有效的检测手段,无法实现湿法冶金萃取过程组分含量的实时检测。本文提出了一种核函数非线性偏最小二乘法(PLS)与萃取过程动态机理模型相结合的萃取组分含量混合建模方法,用以预报萃余液中被萃组分的浓度。通过分析混合澄清器机... 详细信息

由于缺乏有效的检测手段,无法实现湿法冶金萃取过程组分含量的实时检测。本文提出了一种核函数非线性偏最小二乘法(PLS)与萃取过程动态机理模型相结合的萃取组分含量混合建模方法,用以预报萃余液中被萃组分的浓度。通过分析混合澄清器机理,利用物料衡算关系建立了萃取过程组分含量的动态模型;利用核函数非线性PLS对模型中的未知参数分配比进行辨识。仿真分析验证了该方法相比于机理模型的有效性,将其应用于实际生产过程中,取得了满意的效果。

关键词：湿法冶金萃取核函数偏最小二乘法混合模型

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：