检索结果-内蒙古大学图书馆

Asian control Conference

作者： Jinquan Zheng Wenli Du Weimin Zhong Feng Qian Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai China

ISBN: (纸本)9781728102634

Free lime (f-Cao) content is the key quality indicator in the control and optimization of cement calcination process. However, the cement process has many complex characteristics including large noise, time delay, nonlinearity, and time-varying system. To cope with the above characteristics, this study proposes just-in-time (JIT) learning with empirical mode decomposition (EMD) and database monitoring index (DMI) for free lime prediction. At first, EMD and Savitzky-Golay (S-G) filter can effectively deal with process large noise. Meanwhile, weighted time series analysis and mutual information are used to estimate large time delay. Then, least squares support vector machine (LSSVM) based on JIT and DMI is employed to solve the problems of process nonlinearity and time variation. The proposed strategy is validated on practical data from a cement plant.

关键词： Calcination Kilns Delay effects Mutual information Monitoring Indexes

来源：评论

学校读者我要写书评

暂无评论

Data-driven Scheduling optimization of Ethylene Cracking Furnace System

Data-driven Scheduling Optimization of Ethylene Cracking Fur...

引用

Chinese control and Decision Conference, CCDC

作者： Xinwei Lin Liang Zhao Wenli Du Feng Qian Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai China

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

The ethylene cracking furnace system convert a variety of hydrocarbon feeds into products such as ethylene and propylene in parallel. During the cracking process, the coke produced by the cracking will degrade the performance of the cracking furnace, so the furnace should be cleaned periodically. Scheduling of the cracking furnace system involves various raw materials, multiple furnaces, and multiple constraints, so it is a difficult mathematic programming problem. Previous studies have simplified the optimization model to obtain a corresponding mixed integer nonlinear programming (MINLP) model. In order to make the scheduling more suitable for the actual process, this paper develops the transfer-line exchanger (TLE) model, fuel consumption model, and super-high pressure steam (SS) model by using the actual plant data. A case study is put forward to demonstrate the effectiveness of the proposed method.

关键词： Furnaces Feeds Mathematical model Job shop scheduling Raw materials optimization Fuels

来源：评论

学校读者我要写书评

暂无评论

Reduced-order multiple models robust direct adaptive control of non-minimum phase system

Reduced-order multiple models robust direct adaptive control...

引用

World Congress on Intelligent control and Automation (WCICA)

作者： J.-Z. Liu Z.-L. Wang Xin Wang D.-H. Wang Feng Qian Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai China Center of Electrical & Electronic Engineering Shanghai Jiaotong University Shanghai China

The performance of robust adaptive control system based on traditional revised algorithm is awful in the presence of unmodeled dynamics and the performance will go bad, even be unstable, when the working condition (including the parameter, reference input, and so on) change. This paper designs the multiple models robust adaptive controller to control the discrete single-variable non-minimum phase system. First, the higher part of the system is deem to be the unmodelled dynamic and the normalization is introduced to convert the system unmodeled dynamics to bounded disturbance as well as the dead zone is introduced in parameter update algorithm. And then, the multiple models robust adaptive controllers are designed based on the lower part of the system and the best controller is chosen based on the switch index to control the system. The last simulation illustrates that the proposed method is preferable even the working condition changes.

关键词： Adaptation model Adaptive control Robustness Heuristic algorithms Switches

来源：评论

学校读者我要写书评

暂无评论

Design of Real-Time Document control Based on Zigbee and Surface Electromyography(sEMG)

Design of Real-Time Document Control Based on Zigbee and Sur...

引用

The 7th International Conference on Management and Service Science(MASS 2013)

作者： Zhen Wang Bei Wang Xingyu Wang Department of Automation School of Information Science and EngineeringEast China University of Science and Technology Key Laboratory of Advanced Control and Optimization for Chemical Processes (East China University of Science and Technology)Ministry of Education

The human-computer interaction(HCI) is now playing a great role in computer *** study introduces an automatic document control technique which is based on the human hand waving *** recognition of hand movement is realized according to the surface electromyography(sEMG).A collector is set on the *** sEMG signal is recorded and conveyed to a PC terminal by using wireless *** automatic algorithm is developed in order to extract the characteristics of sEMG,recognize the waving movements,and transmit to document control *** developed human-computer interaction technique can be used as a new gallery for teaching,as well as an assistant tool for disabled person.

关键词： Surface Electromyography Human-Computer Interaction Zigbee Document control

来源：评论

学校读者我要写书评

暂无评论

Design of Real-Time Document control Based on Zigbee and Surface Electromyography (sEMG)

Design of Real-Time Document Control Based on Zigbee and Sur...

引用

The 7th International Conference on Bioinformatics and Biomedical Engineering(ICBBE 2013)

The human-computer interaction (HCI) is now playing a great role in computer technology. This study introduces an automatic document control technique which is based on the human hand waving movements

关键词：

来源：评论

学校读者我要写书评

暂无评论

Gas Leakage Segmentation in Industrial Plants

Gas Leakage Segmentation in Industrial Plants

引用

Chinese Automation Congress (CAC)

作者： Haoqi Lin Xiaojing Gu Jingyu Hu Xingsheng Gu Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai China

ISBN: (数字)9781728176871

ISBN: (纸本)9781728176888

Industrial gas leakage in chemical plants presents a high risk to health and safety, also makes a huge waste of production materials. In this paper, we propose an automatic gas segmentation method for optical gas imaging (OGI) videos, which can not only indicate the existence of leakage in frames but also show the precise locations and shapes of gas plumes. Specifically, we propose a novel video segmentation network that stacks 2D spatial convolutions, 1D temporal convolutions and 3D spatial-temporal convolutions together within an encoder-decoder structure, termed 2.5D-Unet. Stacking mixed convolutions increases the representation ability of network for leakage's appearance and motion. More importantly, stacking mixed convolutions facilitates pre-training of model using still images of smoke, which is especially useful when lacking of labeled videos of leaked gas. Experimental results show, for OGI video-based gas leakage segmentation, our method outperforms existing video segmentation methods.

关键词： Videos Feature extraction Image segmentation chemicals Data mining Three-dimensional displays Task analysis

来源：评论

学校读者我要写书评

暂无评论

A synthesis approach to predictive control for networked control systems 33

A synthesis approach to predictive control for networked con...

引用

Proceedings of the 33rd Chinese control Conference, CCC 2014

作者： Zou, Yuanyuan James, Lam Niu, Yugang Li, Dewei Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai200237 China Department of Mechanical Engineering University of Hong Kong Hong Kong Department of Automation Shanghai Jiao Tong University Shanghai200240 China

ISBN: (纸本)9789881563842

This paper studies a synthesis approach to predictive control for networked control systems with data loss and quantization. An augmented Markov jump linear model with polytopic uncertainties is modeled to describe the quantization errors and possible data loss. Based on this model, a predictive control synthesis approach is developed, which involves online optimization of a infinite horizon objective and conditions to deal with system constraints. The proposed MPC algorithm guarantees closed-loop mean-square stability and constraints satisfaction. © 2014 TCCT, CAA.

关键词： Networked control systems

来源：评论

学校读者我要写书评

暂无评论

H∞ filtering for networked control systems with quantization and multiple packet dropouts

H∞ filtering for networked control systems with quantizatio...

引用

International Conference on control, Automation, Robotics and Vision (ICARCV)

作者： Huaicheng Yan Zhenzhen Su Hongbo Shi Hao Zhang Key Laboratory of Advanced Control and Optimization for chemical Processes of Ministry of Education and School of Information Science and Engineering East China University of Science and Technology Shanghai China Department of Control Science and Engineering Tongji University Shanghai China

ISBN: (纸本)9781467318716

This paper addresses the H ∞ filtering problem for networked control systems with quantization and multiple packet dropouts. The effects of measurement channel and control channel quantization as well as packet dropouts are considered simultaneously due to limited communication capacity and unreliable communication links. Stochastic variables satisfying the Bernoulli random binary distribution are utilized to model the multiple packet dropouts. Sufficient conditions are proposed such that the filtering error system is exponentially mean-square stable while the H ∞ disturbance rejection attenuation constraint is satisfied. Then, the explicit expression of the desired filter gains is described in terms of the solution to linear matrix inequalities (LMIs). Finally, a numerical example is employed to demonstrate the effectiveness of the proposed filter design approach.

关键词： Quantization (signal) Networked control systems Symmetric matrices Sensors Delays Robustness Linear matrix inequalities

来源：评论

学校读者我要写书评

暂无评论

Security of opinion dynamics in social networks ⁎

引用

IFAC-PapersOnLine 2019年第3期52卷 162-167页

作者： Long Gao Wen Yang Zhiyun Zhao Xiaofan Wang Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Shanghai China 200237 Department of Automation Shanghai Jiaotong University Shanghai China 200240 School of Mechatronic Engineering and Automation Shanghai University Shanghai China 200072

In this paper, we consider the security problem of opinion dynamics in attack-defense environment in social networks. First, we propose an opinion dynamics model, which is composed by attackers, defenders and the masses. In the proposed model, a set of attackers controlled by the agent with hostile opinion sends malicious opinion to their neighbors with a certain probability, and the defenders are activated by the agent with right opinion at a triggering time to lead the opinions of the masses to a safe zone. Second, we provide a sufficient condition to ensure the convergence of the expected opinions of the system. We also give the method to seek a lower bound of the opinions spread by the defenders at each time step while keeping the opinions in safe situation. Finally, we provide a numerical example to verify the main results.

关键词： Opinion dynamic attack-defense environment network security social network

来源：评论

学校读者我要写书评

暂无评论

Online Batch Process Monitoring Based on Just-in-Time Learning and Independent Component Analysis

引用

Journal of Donghua University(English Edition) 2016年第6期33卷 944-948页

作者： WANG Li SHI Hong-bo School of Electrical and Electronic Engineering Shanghai Institute of Technology Shanghai 200230 China Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Shanghai 200237 China

A new method was developed for batch process monitoring in this paper. In the devdopad method, just-in-time learning （ JITL ） and independent component analysis （ICA） were integrated to build JITL-ICA monitoring scheme. JITL was employed to tackle with the characteristics of batch process such as inherent time- varying dynamics, multiple operating phases, and especially the case of uneven length stage. According to new coming test data, the most correlated segmentation was obtained from batch-wise unfolded training data by JITL. Then, ICA served as the principal components extraction approach. Therefore, the *** distributed data can also be addressed under this modeling framework. The effectiveness and superiority of JITL-ICA based monitoring method was demonstrated by fed-batch penicillin fermentation.

关键词： batch process monitoring just-in-time learning(JITL) independent component analysis(ICA)

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：