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Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing 2011年第2期33卷 221-226页

作者： Hu, Chang-Bin Tong, Chao-Nan Peng, Kai-Xiang Key Laboratory of the Ministry of Education of China for Advanced Control of Iron and Steel Process University of Science and Technology Beijing Beijing 100083 China

According to production data of a 1580 rolling mill, an integrated method combining finite element analysis and neural networks was presented for hot rolling. In the method, plastic deformation during the rolling process was firstly modeled by a finite element method, and then a neural network provided parameter adjustment for the finite element model, so the integrated model had the advantages of neural network and finite element methods. At the same time, intelligent chaos particle swarm optimization (CPSO) was used to optimize weights and thresholds of the network. A comparison between simulation results and actual production data proved the validity of the integrated model.

关键词： Finite element method

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Face location and eye character detection based on monocular vision gaze tracking system

Face location and eye character detection based on monocular...

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2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010

作者： Wang, Fenhua Chen, Xiao Chi, Jiannan Wang, Zhiliang Iron and Steel Flow Advanced Control Ministry of Education Key Laboratory University of Science and Technology Beijing China

ISBN: (纸本)9781424468546

In the paper an face location and eye detection method is proposed based on active infrared source system, which is to solve the problems of pupil threshold segmentation according to from coarse and fine strategy. This method use bright pupil and dark pupil difference scheme. Firstly, we collect a lot of dark images to train classifiers make use of Haar features, boosting them to be a strong classifiers to face location;then potential region of pupil is found based on the knowledge about facial structure;Finally, human eyes location can be precise found. ©2010 IEEE.

关键词： Eye tracking

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Optimization research of genetic neural network based on Scilab

Optimization research of genetic neural network based on Sci...

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IEEE International Workshop on Open-source Software for Scientific Computation (OSSC)

作者： Baoyong Zhao Yingjian Qi Xing Tao School of Automation & Electrical Engineering University of Science and Technology Beijing Beijing China Key Laboratory of Advanced Control for Iron and Steel Process Ministry of Education China Science School Communication University of China Beijing China Beijing Research Center of Urban System Engineering Beijing China

ISBN: (纸本)9781612844923

Radial basis function (RBF) network is one of the significant neural networks. It has been used successfully in various fields. But in RBF network approximation algorithm, the initial value of the network weights, Gauss function center vector and broad-based vector is not easy to determine, and when these parameter choice is undeserved, RBF network approximation precision will decline and even the serious consequences of network spread will be produced. By using genetic algorithm in this paper, which can better realize RBF network parameter optimization, thereby increasing the accuracy of approximation. Scilab is open source software and has good simulation capabilities. Experiments using Scilab shows that the optimization method of genetic neural network is feasible and results are satisfied.

关键词： Genetic algorithms Radial basis function networks Optimization Approximation methods Vectors Biological cells Genetics

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Electromagnetic characteristic simulation of burden surface radar measurements in the BF closed environment

Beijing Keji Daxue Xuebao/Journal of University of Science a...

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Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing 2011年第1期33卷 87-92页

作者： Chen, Xian-Zhong Yin, Yi-Xin Hou, Qing-Wen Lu, Yi-Fang Wang, Pei-Yuan Li, Min School of Information Engineering University of Science and Technology Beijing Beijing 100083 China Key Laboratory of the Ministry of Education of China for Advanced Control for Iron and Steel Process University of Science and Technology Beijing Beijing 100083 China

Microwave electromagnetic characteristics in radar measurements of burden surfaces and media thickness of an ore and coke (O/C) layer were researched in the closed environment of a blast furnace (BF). With electromagnetic calculations and CST simulation software, a dielectric constant model of the media layer was developed to study the transmission, reflection and absorption characteristics of the burden surface and the O/C layer in BF. Also a reconstruction relational model of the number of distributing O/C layers in BF, microwave angle and frequency band concerned with the dielectric constant of the media layer was established. Using transmission and reflection electromagnetic characteristics of radar waves, combining with BF radar distributed radar sensor array installation and the different dielectric constants of the O/C layer in BF, the three-dimensional reconstruction imaging of burden surfaces and O/C layer thickness in BF was realized on-line.

关键词： Blast furnaces

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Predicted control for strip thickness based on information fusion

Beijing Keji Daxue Xuebao/Journal of University of Science a...

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Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing 2011年第3期33卷 358-362页

作者： Peng, Kai-Xiang Lai, Chun-Shan School of Information Engineering University of Science and Technology Beijing Beijing 100083 China Key Laboratory of the Ministry of Education of China for Advanced Control of Iron and Steel Process University of Science and Technology Beijing Beijing 100083 China

A state-space model of the control system in hot continuous rolling was proposed by using a recursive least squares algorithm by linearizing and discretizing the rolling force and thickness control equations. After an optimal information fusion algorithm based on Kalman filtering was presented, an asynchronous information fusion estimation algorithm was built for the complex multi-variable system of hot continuous rolling. This model was applied into the prediction of strip thickness and plasticity coefficient Q in the hot continuous rolling process. At last, the real-time forecast results of the coming strip thickness and plasticity coefficient of strips were synthetically utilized in the thickness control system of hot continuous rolling to improve the quality of final coming strip thickness.

关键词： Information fusion

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Improvement of a radar signal processing system for burden surface measurement in a blast furnace

Beijing Keji Daxue Xuebao/Journal of University of Science a...

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Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing 2011年第2期33卷 215-220页

作者： Chen, Xian-Zhong Yin, Yi-Xin Hou, Qing-Wen Li, Xiao-Li Ma, Jian Wang, Meng School of Information Engineering University of Science and Technology Beijing Beijing 100083 China Key Laboratory of the Ministry of Education of China for Advanced Control for Iron and Steel Process University of Science and Technology Beijing Beijing 100083 China

Metallurgical radar was developed which can be used in high temperature and hash production environments. It adopted an improved frequency-modulated continuous wave principle and enhanced the real-time performance of solid material level measurement. An intelligent time-varying threshold signal processing method was proposed to solve the radar ranging accuracy problem caused by the change of solid material surface reflection coefficient in a blast furnace. Measurement results in a solid-powder state material surface simulation environment in the laboratory shows that the measurement tracking delay of the metallurgical radar is within 0.2 s, and the maximum average tracking error is less than 0.05%. Field test results show that the average measurement error is 0.95%, indicating that the metallurgical radar is capable of stable material surface tracking in real-time and can meet the requirements of BF monitoring.

关键词： Blast furnaces

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3D vritual face modeling technology and application

3D vritual face modeling technology and application

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2010 3rd IEEE International Conference on Broadband Network and Multimedia Technology, IC-BNMT2010

作者： Wang, Fenhua Shi, Ningjuan Gao, Xuegang Wang, Zhiliang Iron and Steel Flow Advanced Control Ministry of Education Key Laboratory University of Science and Technology Beijing Beijing China School of Automation Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9781424467709

3D face modeling in computer graphics and virtual reality technology is a hot of research. In this paper, we get the original three-dimensional face data through optical scanners. Due to a variety constraints of conditions (light, face of the rough parts), there are many empty parts of the face. In this paper, we use Hermite cubic spline interpolation algorithm to repair three-dimensional facial model hollow parts, and use the shortest path algorithm to draw three-dimensional face of the grid. Established by the three-dimensional face model can be applied to the digital home, the emotional human facial expressions, medical plastic surgery and other fields. © 2010 IEEE.

关键词： Graph theory

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FACE LOCATION AND EYE CHARACTER DETECTION BASED ON MONOCULAR VISION GAZE TRACKING SYSTEM

FACE LOCATION AND EYE CHARACTER DETECTION BASED ON MONOCULAR...

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2010 2nd IEEE International Conference on Network Infrasturcture & Digital Content(2010年第二届IEEE网络基础设施与数字内容国际会议 IC-NIDC 2010)

作者： Fenhua Wang Xiao Chen Jiannan Chi Zhiliang Wang Iron and Steel Flow Advanced Control Ministry of Education Key LaboratoryUniversity of Science & Technology Beijing China

关键词： gaze tracking face location eye location dark and bright pupil image cascade classifiers

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Predicting protein secondary structure based on compound pyramid model

Predicting protein secondary structure based on compound pyr...

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IEEE International Conference on Granular Computing

作者： Yang, Bingru Wang, Lijun Qu, Wu Zhai, Yun School of Information Engineering University of Science and Technology Beijing China Key Laboratory for Advanced Control of Iron and Steel Process Ministry of Education University of Science and Technology Beijing Beijing 100083 China

ISBN: (纸本)9780769541617

Biological processes have produced the ultimate intelligent system, and now we are trying to understand biology by building intelligent systems. Protein Secondary structure prediction is essential for the tertiary structure modeling, and it is the one of the major challenge of bioinformatics. In this paper, we proposed a new type of intelligent system to predict the protein secondary structure, and it contain a Compound Pyramid Model (CPM) which is gradually enhanced, multi-layered. This model is composed of four independent coordination's layers by intelligent interfaces, synthesizes several methods. The model penetrates the whole domain knowledge, and the effective attributes are chosen by Causal Cellular Automata, and the high pure structure database is constructed for training. An optimized accuracy (Q3) for the RS126 and CB513 dataset of 83.99% and 85.58%, respectively, could be obtained. And the CASP8's sequences, the results are found to be superior to those produced by other methods, such as PSIPRED,SSPRO, SAM-T02,PHD Expert, PROF, JPRED, and so on. The result shows that our method has strong generalization ability. © 2010 Crown Copyright.

关键词： Intelligent systems

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Coupling Dynamic Model of Chatter for Cold Rolling

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Journal of iron and steel Research International 2010年第12期17卷 30-34页

作者： YANG Xu TONG Chao-nan YUE Guang-feng MENG Jian-ji School of Information Engineering 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 100083 China Central Research Institute of Building and Construction Co Ltd MCC Group Beijing 100088 China

In order to build high accuracy integral dynamic models of cold rolling mill system, by analyzing the vibration process of cold rolling, the dynamic model of 4-h mill, including the rolling process model, the mill roll stand structure model and the hydraulic servo system model is built. These three models are coupled and linearized, then the multiple input and multiple output （MIMO） linear transfer function model of single stand 4-h cold mill system is obtained. The model with the proposed data proves its validity, meanwhile the effects of different working conditions on the stability of cold rolling mill system have been discussed. Simulation resulsts show that the model accords with former models and has its own advancement. It contributes to the further study and supression of coupling vibraiton.

关键词： cold rolling chatter dynamic modeling coupling simulation

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