检索结果-南通市图书馆

Data-driven Wasserstein distributionally robust chance-constrained optimization for crude oil scheduling under uncertainty

引用

Chinese Journal of Chemical Engineering 2024年第5期69卷 152-166页

作者： Xin Dai Liang Zhao Renchu He Wenli Du weimin zhong Zhi Li Feng Qian Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China Engineering Research Center of Process System Engineering Ministry of EducationEast China University of Science and TechnologyShanghai 200237China

Crude oil scheduling optimization is an effective method to enhance the economic benefits of oil *** uncertainties,including uncertain demands of crude distillation units(CDUs),might make the production plans made by the traditional deterministic optimization models infeasible.A data-driven Wasserstein distributionally robust chance-constrained(WDRCC)optimization approach is proposed in this paper to deal with demand uncertainty in crude oil ***,a new deterministic crude oil scheduling optimization model is developed as the basis of this *** Wasserstein distance is then used to build ambiguity sets from historical data to describe the possible realizations of probability distributions of uncertain demands.A cross-validation method is advanced to choose suitable radii for these ambiguity *** deterministic model is reformulated as a WDRCC optimization model for crude oil scheduling to guarantee the demand constraints hold with a desired high probability even in the worst situation in ambiguity *** proposed WDRCC model is transferred into an equivalent conditional value-at-risk representation and further derived as a mixed-integer nonlinear programming *** case studies from a real-world refinery are conducted to show the effectiveness of the proposed ***-of-sample tests demonstrate that the solution of the WDRCC model is more robust than those of the deterministic model and the chance-constrained model.

关键词： Distributions Model Optimization Crude oil scheduling Wasserstein distance Distributionally robust chance constraints

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

Artificial intelligence-assisted design of new chemical materials:a perspective

引用

Science China(Information Sciences) 2024年

作者： Feng QIAN Wenli DU weimin zhong Yang TANG Jingyi LU Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and Technology

New chemical materials are a fresh category of substances created through chemical reactions or by refining existing materials through secondary *** using creative methods,advanced technologies,innovative techniques,and state-of-the-art equipment,these materials （e.g.,high-end polyolefin,nano materials）[1]are carefully designed and developed to showcase outstanding performance and unique capabilities beyond what traditional chemical materials can offer[2].

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

从历史和现实的双向角度看茶史与茶业研究

引用

吉首大学学报（社会科学版） 2024年第2期45卷 26-34页

作者：仲伟民清华大学历史系北京100084

中国是产茶大国,更是具有悠久茶文化传统的国家。新航路开辟后,中国的茶叶开始向全世界传播,茶叶贸易不仅成为助推全球化的重要因素,而且使当时的头号强国英国成为全民饮茶国家,并形成了独特的英国茶文化。然而,繁荣的茶叶贸易并没有使... 详细信息

中国是产茶大国,更是具有悠久茶文化传统的国家。新航路开辟后,中国的茶叶开始向全世界传播,茶叶贸易不仅成为助推全球化的重要因素,而且使当时的头号强国英国成为全民饮茶国家,并形成了独特的英国茶文化。然而,繁荣的茶叶贸易并没有使中国走向强国之路,相反,中国却成为了列强的半殖民地。中国茶业从清末走向低迷,直至20世纪后期才开始恢复,但离茶业强国还差很远。通过对茶史进行深入研究,能找到中国茶业低迷不振的根源;对茶业现状的反思同样也能促使茶史研究的深入。因此,我们需要重视茶史、茶文化的研究,需要从历史与现实的双向角度来思考茶业振兴的问题。

关键词：茶史茶业经济史研究全球化民族主义

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

Data-Driven Fault Compensation Tracking Control for Coupled Wastewater Treatment Process

引用

IEEE/CAA Journal of Automatica Sinica 2023年第1期10卷 294-297页

作者： Peihao Du weimin zhong Xin Peng Linlin Li Zhi Li the Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China IEEE the Key Laboratory of Knowledge Automation for Industrial Processes of Ministry of Education the School of Automation and Electrical EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Dear Editor, This letter is concerned with the data-driven fault compensation tracking control for a coupled wastewater treatment process(WWTP)subject to sensor faults. Invariant set theory is introduced to eliminate the completely bounded and differentiable conditions of coupled non-affine dynamics and to explicitly express the control *** adaptive fault compensation mechanism is constructed to accommodate the effects of sensor faults. By employing a cubic absolutevalue Lyapunov criteria。

关键词： differentiable eliminate absolute

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

基于卡尔曼滤波算法的车身高度观测

引用

农业装备与车辆工程 2024年第2期62卷 44-48页

作者：鲍光锐郑敏毅张农钟伟民合肥工业大学汽车与交通工程学院安徽合肥230009 合肥工业大学汽车工程技术研究院安徽合肥230009

为解决直接使用超声波以及激光雷达测距容易受到路面情况的干扰的问题,提出了一种基于卡尔曼滤波算法。运用MATLAB/Simulink建立整车模型,建立车身高度观测器,从而实现实时且准确地获得车身高度,为车辆控制策略提供准确的车辆质心高度... 详细信息

为解决直接使用超声波以及激光雷达测距容易受到路面情况的干扰的问题,提出了一种基于卡尔曼滤波算法。运用MATLAB/Simulink建立整车模型,建立车身高度观测器,从而实现实时且准确地获得车身高度,为车辆控制策略提供准确的车辆质心高度参数。利用仿真模型进行双移线工况和减速带工况的仿真分析,对静止车辆施加随机激励进行了实车实验。仿真和实验结果表明:卡尔曼滤波算法的车身高度观测器可以实时且准确地获得车身高度,具有较好的精确度。

关键词：卡尔曼滤波高度观测 Simulink

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

An on-line constraint softening strategy to guarantee the feasibility of dynamic controller in double-layered MPC

引用

Chinese Journal of Chemical Engineering 2017年第12期25卷 1805-1811页

作者： Hongguang Pan weimin zhong Zaiying Wang School of Electrical and Control Engineering Xi'an University of Sdence and Technology Xi'an 710071 China Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Sdence and Technology Shanghai 200237 China

A double-layered model predictive control(MPC), which is composed of a steady-state target calculation(SSTC)layer and a dynamic control layer, is a prevailing hierarchical structure in industrial process control. Based on the reason analysis of the dynamic controller infeasibility, an on-line constraints softening strategy is given. At first, a series of regions of attraction(ROA) of the dynamic controller is calculated according to the softened constraints;then a minimal ROA containing the current state is chosen and the corresponding softened constraint is adopted by the dynamic controller. Note that, the above measures are performed on-line because the centers of the above ROA are the steady-state targets calculated at each instant. The effectiveness of the presented strategy is illustrated through two examples.

关键词： Model predictive control Steady-state target calculation Dynamic control Feasibility Region of attraction

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

Wind field reconstruction for the dispersion modeling of accidental chemical spills on complex geometry

引用

Chinese Journal of Chemical Engineering 2019年第11期27卷 2712-2724页

作者： Bing Wang Feng Qian weimin zhong Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China

Chemical spills on complex geometry are difficult to model due to the uneven concentration distribution caused by air flow over ground obstacles. Computational fluid dynamics(CFD) is one of the powerful tools to estimate the building-resolving wind flow as well as pollutant dispersion. However, it takes too much time and requires enormous computational power in emergency situations. As a time demanding task, the estimation of the chemical spill consequence for emergency response requires abundant wind field information. In this paper, a comprehensive wind field reconstruction framework is proposed, providing the ability of parameter tuning for best reconstruction accuracy. The core of the framework is a data regression model built on principal component analysis(PCA) and extreme learning machine(ELM). To improve the accuracy, the wind field estimation from the regression model is further revised from local wind observations. The optimal placement of anemometers is provided based on the maximum projection on minimum eigenspace(MPME) algorithm. The fire dynamic simulator(FDS) generates high-resolution data of wind flow over complex geometries for the framework to be implemented. The reconstructed wind field is evaluated against simulation data and an overall reconstruction error of 9% is achieved. When used in real case,the error increases to around 12% since no convergence check is available. With parameter tuning abilities,the proposed framework provides an efficient way of reconstructing the wind flow in congested areas.

关键词： Wind field reconstruction CFD PCA Extreme learning machine Sensor placement

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

Fundamental Theories and Key Technologies for Smart andOptimal Manufacturing in the Process Industry

引用

Engineering 2017年第2期3卷 154-160页

作者： Feng Qian weimin zhong Wenli Du Key Laboratory of Aflvanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and TechnologyShanghai 200237 China

Given the significant requirements for transforming and promoting the process industry, we present themajor limitations of current petrochemical enterprises, including limitations in decision-making, produc-tion operation, efficiency and security, information integration, and so forth. To promote a vision of theprocess industry with efficient, green, and smart production, modern information technology should beutilized throughout the entire optimization process for production, management, and marketing. To focuson smart equipment in manufacturing processes, as well as on the adaptive intelligent optimization of themanufacturing process, operating mode, and supply chain management, we put forward several key scien-tific problems in engineering in a demand-driven and application-oriented manner, namely：intelligentsensing and integration of all process information, including production and management information; collaborative decision-making in the supply chain, industry chain, and value chain, driven by knowledge; cooperative control and optimization of plant-wide production processes via human-cyber-physical in-teraction; and Q life-cycle assessments for safety and environmental footprint monitoring, in addition totracing analysis and risk control. In order to solve these limitations and core scientific problems, we furtherpresent fundamental theories and key technologies for smart and optimal manufacturing in the processindustry. Although this paper discusses the process industry in China, the conclusions in this paper can beextended to the larocess industry around the world.

关键词： Process industry Smart and optimal manufacturing Green manufacturing High-end manufacturing Optimality assessment

来源：

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

A novel chemical composition estimation model for cement raw material blending process

引用

Chinese Journal of Chemical Engineering 2019年第11期27卷 2734-2741页

作者： Yaoyao Bao Yuanming Zhu weimin zhong Feng Qian Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and TechnologyShanghai 200237China

Raw material blending process is an essential part of the cement production process. The main purpose of the process is to guarantee a certain oxide composition for the raw meal at the outlet of the mill by regulating the four raw materials. But the chemical compositions of raw materials vary from time to time, resulting in difficulties to control the oxide compositions to a predefined value. Therefore, a novel algorithm to estimate the chemical compositions of the raw materials is developed. The paper mainly consists of two parts. In model construction part, a novel constrained least square model is proposed to overcome the deviation introduced by long-term drift of the material components, and the model parameters are estimated with an online strategy. And in validation part, the approach is implemented to two examples including datasets from simulation model and the actual industrial process. The final results show the effectiveness of the proposed method.

关键词： Raw material blending process Chemical component estimation Modulus prediction System identification

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

Equipment selection knowledge base system for industrial styrene process

引用

Chinese Journal of Chemical Engineering 2018年第8期26卷 1707-1712页

作者： weimin zhong Shuming Liu Feng Wan Zhi Li Key Laboratory of Advanced Control and Optimization for Chemical Processed of Ministry of Education East China University of Science and Technology

Equipment selection for industrial process usually requires the extensive participation of industrial experts and technologists, which causes a serious waste of resources. This work presents an equipment selection knowledge base system for industrial styrene process(S-ESKBS) based on the ontology technology. This structure includes a low-level knowledge base and a top-level interactive application. As the core part of the S-ESKBS, the low-level knowledge base consists of the equipment selection ontology library, equipment selection rule set and Pellet inference engine. The top-level interactive application is implemented using S-ESKBS, including the parsing storage layer, inference query layer and client application layer. Case studies for the industrial styrene process equipment selection of an analytical column and an alkylation reactor are demonstrated to show the characteristics and implementability of the S-ESKBS.

关键词：知识库系统设备选择工业过程苯乙烯技术人员推理引擎应用程序规则集合

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：