检索结果-南通市图书馆

process modeling and Dynamic Simulation for EAST Helium Refrigerator

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2016年第6期18卷 693-698页

作者：陆小飞傅鹏庄明邱立龙胡良兵 Institute of Plasma Physics Chinese Academy of Sciences

In this paper,the process modeling and dynamic simulation for the EAST helium refrigerator has been *** cryogenic process model is described and the main components are customized in *** process model is controlled by the PLC simulator,and the realtime communication between the process model and the controllers is achieved by a customized *** of the process model has been confirmed based on EAST experimental data during the cool down process of 300-80 *** results indicate that this process simulator is able to reproduce dynamic behaviors of the EAST helium refrigerator very well for the operation of long pulsed plasma *** cryogenic process simulator based on control architecture is available for operation optimization and control design of EAST cryogenic systems to cope with the long pulsed heat loads in the future.

关键词： EAST cryogenic system helium refrigerator process modeling dynamic simulation

Optimization of a Cu CMP process modeling parameters of nanometer integrated circuits

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2012年第8期33卷 127-134页

作者：阮文彪陈岚马天宇方晶晶张贺叶甜春 Institute of Microelectronics Chinese Academy of Sciences

A copper chemical mechanical polishing （Cu CMP） process is reviewed and analyzed from the view of chemical physics. Three steps Cu CMP process modeling is set up based on the actual process of manufacturing and pattern-density-step-height （PDSH） modeling from MIT. To catch the pattern dependency, a 65 nm testing chip is designed and processed in the foundry. Following the model parameter extraction procedure, the model parameters are extracted and verified by testing data from the 65 nm testing chip. A comparison of results between the model predictions and test data show that the former has the same trend as the latter and the largest deviation is less than 5 nm. Third party testing data gives further evidence to support the great performance of model parameter optimization. Since precise CMP process modeling is used for the design of manufacturability （DFM） checks, critical hotspots are displayed and eliminated, which will assure good yield and production capacity of IC.

关键词： chemical mechanical polishing process modeling parameter extraction modeling verification hotspot

Artificial neural networks applied to spot welding process modeling

在线全文

学校读者我要写书评

暂无评论

China Welding 1997年第1期6卷 44-51页

作者：张忠典李严何幸平吴林徐清

Artificial neural networks have been studied for applicability for modeling of spot welding process. Some basic concepts relating to neural networks are explained as well as how they can be used to model welding qualitv parameters in terms of the welding process parameter. The performance of the neural networks for modeling is presented and evaluated using actual welding data. It is concluded that neural network modeling is a good means of estimating spot welding quality on-line.

关键词： artificial neural network spot welding process modeling

Enterprise process modeling Methodology and Environment Supporting Project Management

在线全文

学校读者我要写书评

暂无评论

Journal of Shanghai University(English Edition) 2005年第6期9卷 493-500页

作者：许红霞张莉周伯生 Software Engineering Institute Beijing University of Aeronautics and Astronautics Beijing 100083 P. R. China

Development of the global economy makes modem enterprises confront challenges of efficient managements for large projects and complex processes. Projects are typically managed in rather special manners. On the contrary, there exist many methodologies for product process management to achieve consistency and continuance. However, processes often lack flexibility offered by projects. This paper dis~ the relationship of conceptual characteristics between process and project, gives low-level details to tackle the difference between them, and proposes an enterprise process modeling method for project management. An integrated environment is designed to support the method from which both project management and process management can receive benefits and conform to the limitations.

关键词： process engineering process modeling project management supporting environment integration

Development and Application of process modeling Technology for 2050 Hot Strip Rolling Mill at Baosteel

在线全文

学校读者我要写书评

暂无评论

Development and Application of Process Modeling Technology f...

modeling and Optimization of a Fractionation,Absorption,and Stabilization System in an Industrial Fluid Catalytic Cracking process

技术创新与循环经济——第二届宝钢学术年会

作者： LIU Zhengdong~1,TANG Guangbo~1,CHENG Jiefeng~1,GAN Yong~1,WANG Wei~2,ZHANG Pijun~2 (1.ISM,Central Iron and Steel Research Institute,Beijing 100081,China 2.Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China)

＜正＞An integrated process modeling system had been built,in which thermal,mechanical and metallurgical processes during hot strip rolling were numerically coupled *** structure of the process models was briefly introduced in this *** developed process models can be used to simulate the thermal, mechanical and metallurgical processes evolutions of the whole hot rolling process,from reheating furnace to cooling after coiling,and to predict the mechanical properties of the final product of the 2050 hot strip rolling mill at *** system was verified and optimized against more than 1000 industrial coils of about 10 steel grades and runs on - line *** difference between predicted and measured temperature and strength is±20℃（on-line） and±21 MPa（off-line） respectively.

关键词： hot strip rolling process modeling microstructure evolution on-line application

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

China Petroleum processing & Petrochemical Technology 2022年第3期24卷 117-127页

作者： Long Jian Jiang Siyi Wang Wei Zhang Feng Han Jifei Fan Chen Key Laboratory of Smart Manufacturing in Energy Chemical process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China SINOPEC Jiujiang Company Jiujiang 332013China SINOPEC Research Institute of Petroleum processing Beijing 100083China

Fluid catalytic cracking(FCC)is a vitally important refinery *** fractionation,absorption,and stabilization system in the FCC process is a significant way to obtain key products,and its parameters will directly affect the quality of the *** this work,using industrial data from an actual FCC process,a model of the FCC fractionation,absorption,and stabilization system was developed using process simulation *** sequence quadratic program algorithm was then used to identify the parameters of each tower,increasing the accuracy of the simulation ***,using this improved model,a sensitivity analysis was performed to examine the effects of different operating *** pattern-search method was then used to optimize the operating parameters of the *** results showed that the optimized model has good prediction accuracy,and using the model,it was found that changing the operation parameters could result in a 1.84%improvement in economic *** such,the developed model was demonstrated to be usefully applicable to the optimization of the process operation of an FCC fractionation,absorption,and stabilization system.

关键词： fluid catalytic cracking sequence quadratic program process modeling parameters identification patternsearch method

modeling and Application of Virtual Maintenance process Based on Solidworks Composer

在线全文

学校读者我要写书评

暂无评论

International English Education Research 2016年第7期 63-66页

作者： LIU Tongqiang CHEN Minye HAN Hongke College of Air Transportation Shanghai University of Engineering ScienceShanghai China

In order to realize the virtual maintenance process modeling based on Solidworks Composer, SolidWorks is used to model me main aircraft components in equal proportion and the traditional maintenance operations one by one interpretation and analysis. And then use the composer to repair the work into a three-dimensional human model to repair the three-dimensional related product model, so that visual effects and generate teaching videos. In this paper, the aileron actuator disassembly process as an example to verify the feasibility of the method. This can not only solve the previous training means a single and poor interaction can also be a full range of maintenance engineers to mobilize the vision and heating, but also a clear understanding of the various components of the composition, working principle, connection sequence and maintenance process.

关键词： Virtual maintenance process modeling Composer visualization

Research on Petri Net Based modeling and Analyzing Methods for Workflow process

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Southeast University(English Edition) 2000年第2期16卷 66-73页

作者：姜浩董逸生罗军舟东南大学计算机科学与工程系南京210096

Workflow management is an important aspect in CSCW at present. The elementary knowledge of workflow process is introduced, the Petri nets based process modeling methodology and basic definitions are provided, and the analysis and verification of structural and behavioral correctness of workflow process are discussed. Finally, the algorithm of verification of process definitions is proposed.

关键词： workflow management CSCW Petri net process modeling

Data-Driven Exploration of Polymer processing Effects on the Mechanical Properties in Carbon Black-Reinforced Rubber Composites

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第12期42卷 2038-2047,I0013页

作者： Zi-Long Wan Wan-Chen Zhao Hao-Ke Qiu Shu-Shuai Zhou Si-Yuan Chen Cui-Liu Fu Xue-Yang Feng Li-Jia Pan Ke Wang Tian-Cheng He Yu-Ge Wang Zhao-Yan Sun State Key Laboratory of Polymer Physics and Chemistry&Key Laboratory of Polymer Science and Technology Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei230026China College of Chemistry Jilin UniversityChangchun130012China Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters College of Physical Science and TechnologyYili Normal UniversityYining835000China

The performance and corresponding applications of polymer nanocomposites are highly dominated by the choice of base material,type of fillers,and the processing *** black-filled rubber composites(CRC)exemplify this,playing a crucial role in various ***,due to the complex interplay between these factors and the resulting properties,a simple yet accurate model to predict the mechanical properties of CRC,considering different rubbers,fillers,and processing techniques,is highly *** study aims to predict the dispersion of fillers in CRC and forecast the resultant mechanical properties of CRC by leveraging machine *** selected various rubbers and carbon black fillers,conducted mixing and vulcanizing,and subsequently measured filler dispersion and tensile *** on 215 experimental data points,we evaluated the performance of different machine learning *** findings indicate that the manually designed deep neural network(DNN)models achieved superior results,exhibiting the highest coefficient of determination(R^(2))values(>0.95).Shapley additive explanations(SHAP)analysis of the DNN models revealed the intricate relationship between the properties of CRC and process ***,based on the robust predictive capabilities of the DNN models,we can recommend or optimize CRC fabrication *** work provides valuable insights for employing machine learning in predicting polymer composite material properties and optimizing the fabrication of high-performance CRC.

关键词： Polymer-matrix composites Mechanical properties process modeling Machine learning