检索结果-内蒙古大学图书馆

International Workshop on Advanced Computational Intelligence

作者： Wang, Wei Zhao, Lijie Chai, Tianyou Yu, Wen Key Laboratory of Integrated Automation of Process Industry Ministry of Education Northeastern University China Key Laboratory of Integrated Automation of Process Industry Information Engineering School Ministry of Education South Africa Departamento de Control Automatico CINVESTAV-IPN Mexico D.F. Mexico

ISBN: (纸本)9781424463343

In this paper, a new on-line soft sensing method is proposed for component concentrations of sodium aluminate solution. With this sensing strategy, real-time control and optimization can be realized in aluminate production plants. Several advance techniques are used, such as PLS (Partial Least Squares), Hammerstein model, recurrent neural networks and least square algorithm. Industrial experiment results show that the proposed soft sensing algorithm is effective.

关键词： Recurrent neural networks

来源：评论

学校读者我要写书评

暂无评论

Hailstone detection based on time series association rules

Hailstone detection based on time series association rules

引用

2010 7th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2010

作者： Lu, Zhiying Zhang, Huan Ma, Hongmin Jia, Huizhen School of Electrical Engineering and Automation Tianjin Key Laboratory of Process Measurement and Control Tianjin University Tianjin 300072 China Tianjin Meteorological Bureau Tianjin 300074 China

ISBN: (纸本)9781424459346

Hailstone is one of main meteorological disasters and it is difficult to forecast effectively. In this paper, a new hail echo detection method based on time series association rules was proposed and a hail echo automatic detection system was built. Compared to the existing methods, the test results have shown that this method eliminated hail alert failure completely and also reduced the proportion of false alarm, raising the accuracy of hail forecast. The system was able to assist forecasters to make correct hail forecasts and provide reference to other disastrous weather forecast. ©2010 IEEE.

关键词： Weather forecasting

来源：评论

学校读者我要写书评

暂无评论

Installation effects of ultrasonic flowmeter in single bend pipe

Installation effects of ultrasonic flowmeter in single bend ...

引用

15th International Flow Measurement Conference 2010, FLOMEKO 2010

作者： Zheng, Dan-Dan Zhang, Tao Sun, Li-Jun Meng, Tao Hu, He-Ming Wang, Chi Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China National Institute of Metrology of China Beijing 100013 China

ISBN: (纸本)9781617824722

The downstream flow of 90° single bend was investigated by computational fluid dynamics (CFD). An acoustic transit time flowmeter was exposed to the downstream flow at various positions. Measurement errors with different meter configurations and effects of pipe wall roughness were discussed. Numerical simulation results of three diameter pipes 0.1m, 1m and 10m with increasing the roughness from 0 to 1mm were presented within Reynolds number (Re) range from 5× 103 to 5×106. Copyright © FLOMEKO 2010.

关键词： Flow measurement

来源：评论

学校读者我要写书评

暂无评论

Moving Character Observation of Bubble Rising in Vertical Gas‐Liquid Two‐Phase Flow

引用

AIP Conference Proceedings 2010年第1期1207卷 604-609页

作者： H. Y. Wang F. Dong aTianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University China

The study of bubble motion in water is a basic subject in gas‐liquid two‐phase flow research. A suit of visualized experimental device was designed and set up. Bubble rising in stagnant liquid in a vertical translucent rectangular tank was studied using the high‐speed video system combined with digital image process methods. Several bubble parameters were calculated base on the processed images. Bubble track, bubble velocity curve and accelerating curve have been plotted at different working situation. The movement of bubble rising in water was observed. And the dynamics of bubble were summarized with experimental analyzing. Both gas orifice diameter and bubble detachment are mainly influencing factor for bubble size and bubble dynamics.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Stochastic stabilization of Markovian jump systems in the presence of partial unknown transition probabilities and actuator saturation

Stochastic stabilization of Markovian jump systems in the pr...

引用

作者： Wang, Yijing Zuo, Zhiqiang Cui, Yulong Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China Department of Mathematics City University of Hong Kong Kowloon Hong Kong

ISBN: (纸本)9787894631046

This paper deals with the controller design problem for Markovian jump systems subject to partial unknown transition probabilities and actuator saturation. Different from the previous results where complete knowledge on the transition probabilities is available, a new controller synthesis scheme is proposed as well as an estimate of the domain of attraction in mean square sense. A sufficient condition is first established to guarantee the stochastic stability of the closed-loop system. An optimization problem with LMI constraints is then formulated to determine the largest contractively invariant set in mean square sense. Finally, a numerical example is provided to show the effectiveness of our method.

关键词： Closed loop systems

来源：评论

学校读者我要写书评

暂无评论

Analysis and pattern recognition of blast furnace burden surface based on multi-radar data

Analysis and pattern recognition of blast furnace burden sur...

引用

2010 International Conference on Intelligent control and Information processing, ICICIP 2010

作者： Zhou, Xiang Li, Xiaoli Liu, Dexin Yin, Yixin Chen, Xianzhong Hou, Qingwen Department of Automation Information and Engineering School University of Science and Technology Beijing Beijing 100083 China Key Laboratory of Advanced Control of Iron and Steel Process Ministry of Education University of Science and Technology Beijing Beijing 10083 China

ISBN: (纸本)9781424470488

Iron making is the first stage and also an important part in steel making process, which will bring the problem of energy efficiency and economic benefits. In this process, the distribution of the blast burden impacts greatly on the production of BF (blast furnace). Therefore, the prediction of furnace burden distribution in furnace throat will play an important role in the control strategy of furnace burden. Based on the data from the multi-radar, the blast burden curve can be formed. Feature extraction and classification based on different curves (i.e. different pattern) can be made by using BP neural networks. The work proposed in this paper will be a guidence for the future research of burden surface based on the data of phased-array radar. © 2010 IEEE.

关键词： Blast furnaces

来源：评论

学校读者我要写书评

暂无评论

Application of fuzzy pattern recognition in burden surface identification

Application of fuzzy pattern recognition in burden surface i...

引用

2010 International Conference on Intelligent control and Information processing, ICICIP 2010

作者： Liu, Dexin Li, Xiaoli Zhou, Xiang Yin, Yixin Chen, Xianzhong Hou, Qingwen Department of Automation Information and Engineering School University of Science and Technology Beijing Beijing 100083 China Key Laboratory of Advanced Control of Iron and Steel Process Ministry of Education University of Science and Technology Beijing Beijing 10083 China

ISBN: (纸本)9781424470488

A kind of pattern recognition method with Fuzzy clustering is applied to identify the burden surface of blast furnace. According to the information of burden surface distribution, the target clustering analysis is used to set up a standard model database. Based on the character of distribution, each target burden surface is matched into different standard model database by using fuzzy pattern recognition method. Maximal minimal similarity method is adapted in the course of fuzzy pattern recognition. The simulation results show the effectiveness of the proposed method. © 2010 IEEE.

关键词： Blast furnaces

来源：评论

学校读者我要写书评

暂无评论

Separation of gas - Liquid two-phase flow through independent component analysis

Separation of gas - Liquid two-phase flow through independen...

引用

作者： Xu, Yanbin Wang, Huaxiang Cui, Ziqiang Dong, Feng Yan, Yong Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China Department of Automation Nankai University Tianjin 300071 China Department of Electronics University of Kent CT2 7NT Canterbury United Kingdom

Two-phase flow measurement has attracted a major interest in the past four decades due to its wide range of applications in industry. This paper introduces a new method to separate the gas phase from the liquid phase through a blind source separation algorithm, without a separate device, based on the assumption that the two phases are separated and their independence is reflected in the statistical relation between the electrical signals generated by the process. Experimental data are obtained from a gasliquid two-phase flow rig through electrical resistance tomography (ERT). An independent component analysis (ICA) method is applied to separate the gas phase from the liquid phase. The efficiency of the ICA method with the ERT data is assessed through experiments. The independent components (ICs) are interpreted by comparing them with the reconstructed images by ERT. The comparative studies show that ICA is effective in extracting phase information of gasliquid two-phase flow, particularly for stratified, slug, and wave flows. Based on the extracted ICs, the cross-correlation technique is adopted to estimate the mean velocity of the liquid phase in the central area, the gas phase at the interface, and the liquid phase around the pipe wall and the liquid slug. Through correlating ICs representing different spatially independent processes from the upstream and downstream planes after the elimination of cyclostationary characteristics of ICs, the mean velocity of different spatially processes is obtained. © 2006 IEEE.

关键词： Independent component analysis

来源：评论

学校读者我要写书评

暂无评论

Optimal control over unreliable networks with uncertain loss rates

Optimal control over unreliable networks with uncertain loss...

引用

作者： Kögel, Markus J. Blind, Rainer Allgöwer, Frank Institute for Systems Theory and Automatic Control University of Stuttgart Stuttgart Germany Laboratory for Systems Theory and Automatic Control Institute for Automation Engineering Otto-von-Guericke University Magdeburg Magdeburg Germany Design and Optimization in Chemical and Biochemical Process Engineering International Max Planck Research School for Analysis Magdeburg Germany

ISBN: (纸本)9781424474264

In this work, we consider an optimal control problem for Networked control Systems (NCS), where the loop is closed via an unreliable network. In order to inform the controller about the fates of the control packets, the actuator sends acknowledgements to the controller. In this work, different types of acknowledgements are considered. Since all packets are send over a network, we consequently assume, that all packets can get lost, i.e. the measurement packets, the control packets as well as the acknowledgement packets. The loss of these packets is modeled by independent and identically distributed (iid) Bernoulli processes. Finally, we assume that the parameters of these loss processes are not known exactly. Using this setup, we derive bounds for the uncertainty in the loss rates. Moreover, we present an algorithm to design a sub-optimal controller which can tolerate a given amount of network uncertainties. © 2010 AACC.

关键词： Networked control systems

来源：评论

学校读者我要写书评

暂无评论

Adaptive tracking control of underactuated quadrotor unmanned aerial vehicles via backstepping

Adaptive tracking control of underactuated quadrotor unmanne...

引用

作者： Huang, Mu Xian, Bin Diao, Chen Yang, Kaiyan Feng, Yu Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China Chinese State Nuclear Power Technology Corporation LTD Beijing 100140 China

ISBN: (纸本)9781424474264

This paper considers about the control problem for an underactuated quadrotor UAV system with model parameter uncertainty. Backstepping based techniques are utilized to design a nonlinear adaptive controller which can compensate for the mass uncertainty of the vehicle. Lyapunov based stability analysis shows that the proposed control design yields asymptotic tracking for the UAV's motion in x, y, z direction and the yaw rotation, while keep the stability of the closed loop dynamics of the quadrotor UAV. Numerical simulation results are provided to show the good tracking performance of proposed control laws. © 2010 AACC.

关键词： Backstepping

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：