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Data-Driven Prediction of Sintering Burn-Through Point Based on Novel Genetic Programming

Journal of Iron and Steel Research International 2010年第12期17卷 1-5,10页

作者： SHANG Xiu-qin LU Jian-gang SUN You-xian LIU Jun YING Yu-qian State Key Laboratory of Industrial Control Technology Department o{ Central Science and EngineeringZhejiang University Hangzhou 310027 Zhejiang China

An empirical dynamic model of burn-through point（BTP）in sintering process was *** K-means clustering was used to feed distribution according to the cold bed permeability,which was estimated by the superficial gas velocity in the cold *** each clustering,a novel genetic programming（NGP）was proposed to construct the empirical model of the waste gas temperature and the bed pressure drop in the sintering *** least square method（LSM）and M-estimator were adopted in NGP to improve the ability to compute and resist *** results show the superiority of the proposed method.

关键词： burn-through point genetic programming K-means clustering

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Mean-field Theory for Some Bus Transport Networks with Random Overlapping Clique Structure

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Communications in Theoretical Physics 2010年第4期53卷 688-692页

作者：杨旭华孙豹王波孙优贤 College of Information Engineering Zhejiang University of Technology State Key Laboratory of Industrial Control Technology Zhejiang University Department of Computer Science and Engineering Yiwu Industrial and Commercial College

Transport networks, such as railway networks and airport networks, are a kind of random network with complex topology. Recently, more and more scholars paid attention to various kinds of transport networks and try to explore their inherent characteristics. Here we study the exponential properties of a recently introduced Bus Transport Networks （BTNs） evolution model with random overlapping clique structure, which gives a possible explanation for the observed exponential distribution of the connectivities of some BTNs of three major cities in China. Applying mean-field theory, we analyze the BTNs model and prove that this model has the character of exponential distribution of the connectivities, and develop a method to predict the growth dynamics of the individual vertices, and use this to calculate analytically the connectivity distribution and the exponents. By comparing mean-field based theoretic results with the statistical data of real BTNs, we observe that, as a whole, both of their data show similar character of exponential distribution of the connectivities, and their exponents have same order of magnitude, which show the availability of the analytical result of this paper.

关键词： mean-field theory bus transport network evolution model exponential distribution

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Kernel matrix learning with a general regularized risk functional criterion

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Journal of Systems engineering and Electronics 2010年第1期21卷 72-80页

作者： Chengqun Wang Jiming Chen Chonghai Hu Youxian Sun State Key Laboratory of Industrial Control Technology Department Control Science and Engineering Zhejiang University Hangzhou 310027 P. R. China Department of Mathematics Zhejiang University Hangzhou 310027 E R. China

Kernel-based methods work by embedding the data into a feature space and then searching linear hypothesis among the embedding data points. The performance is mostly affected by which kernel is used. A promising way is to learn the kernel from the data automatically. A general regularized risk functional （RRF） criterion for kernel matrix learning is proposed. Compared with the RRF criterion, general RRF criterion takes into account the geometric distributions of the embedding data points. It is proven that the distance between different geometric distdbutions can be estimated by their centroid distance in the reproducing kernel Hilbert space. Using this criterion for kernel matrix learning leads to a convex quadratically constrained quadratic programming （QCQP） problem. For several commonly used loss functions, their mathematical formulations are given. Experiment results on a collection of benchmark data sets demonstrate the effectiveness of the proposed method.

关键词： kernel method support vector machine kernel matrix learning HKRS geometric distribution regularized risk functional criterion.

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Topological properties of refinery system: A complex network approach

Topological properties of refinery system: A complex network...

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2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Liu, Suyu Liao, Zuwei Feng, Yiping Rong, Gang State Key Laboratory of Industrial Control Technology Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9781424451951

Recent development in complex network theory has boosted the exploration of topological properties of various natural and man-made complex systems. Refinery system is a typical complex system in process industry. However, only plant at equipment level has been studied by the complex network theory. This article treats the whole refinery system at plant level as a network. Study illustrates that the refinery network is a small-world network with heterogeneous distributions of node degree and betweenness centrality. The robustness of the refinery network under different attack strategies is evaluated by efficiency of network performance. Vulnerability study demonstrates the different importance of vertices in keeping the network structural efficiency. This study provides a good example to explain the structure-activity relationship in process industry. © 2010 IEEE.

关键词： Small-world networks

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Quantitative determination of cyfluthrin in N-hexane by terahertz time-domain spectroscopy with chemometrics methods

Quantitative determination of cyfluthrin in N-hexane by tera...

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作者： Hua, Yuefang Zhang, Hongjian Zhou, Hongliang State Key Laboratory of Industrial Control Technology Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

This paper presents the preliminary research in detecting pesticide residues with the newly developed terahertz technique. Experiments were carried out on cyfluthrin n-hexane solutions in the concentration range of 1-20 μg/ml with terahertz time-domain spectroscopy (THz-TDS). We employed four calibration methods for the regression between the absorbance and the concentration of the solutions, i.e., linear regression methods of simple linear regression (SLR), partial least squares (PLS), and nonlinear regression methods of simple least-squares support vector machine (LS-SVM), and the combination of PLS and LS-SVM (PLS-LS-SVM), which utilizes the features extracted by PLS from the original absorbance spectra as the input of LS-SVM. To analyze the antinoise abilities of these models, we collected two data sets of the same series of samples on two different days, i.e., one with higher signal-to-noise ratio (SNR) and the other with lower SNR. Separate models were built on them. We find that the PLS and PLS-LS-SVM models present much better prediction and antinoise abilities than the SLR and simple LS-SVM models, whereas PLS-LS-SVM outperforms PLS, showing much less dependence on the selection of the number of the features extracted. To further analyze the influence of the selection of the frequency range, we built different PLS-LS-SVM models by varying the frequency ranges between 0.5 and 1.5 THz, and find that the model performance dramatically varies with the selection of different frequency ranges, which may be due to the unevenly distributed SNR and the spectroscopic interaction variations in different frequency ranges. The selection of the whole frequency range of 0.51.5 THz results in relatively low prediction error with either the higher or the lower SNR spectra and will thus be selected for further modeling. The overall results indicate that the THz-TDS plus PLS-LS-SVM method proves to be an effective tool for the quantitative analysis of cyfluthrin n-hexane solu

关键词： Support vector machines

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Multi-loop Internal Model controller Design Based on a Dynamic PLS Framework

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Chinese Journal of Chemical engineering 2010年第2期18卷 277-285页

作者：胡斌郑平友梁军 State Key Laboratory of Industrial Control Technology Department of Control Science & Engineering Zhejiang University Hangzhou 310027 China

In this paper,a multi-loop internal model control(IMC) scheme in conjunction with feed-forward strategy based on the dynamic partial least squares(DyPLS) framework is *** the traditional methods to decouple multi-input multi-output(MIMO) systems,the DyPLS framework automatically decomposes the MIMO process into a multi-loop system in the PLS subspace in the modeling *** dynamic filters with identical structure are used to build the dynamic PLS model,which retains the orthogonality among the latent *** address the model mismatch problem,an off-line least squares method is applied to obtain a set of optimal filter parameters in each latent *** losing the merits of model-based control,a simple and easy-tuned IMC structure is readily carried over to the dynamic PLS control *** addition,by projecting the measurable disturbance into the latent subspace,a multi-loop feed-forward control is yielded to achieve better performance for disturbance *** results of a distillation column are used to further demonstrate this new strategy outperforms conventional control schemes in servo behavior and disturbance rejection.

关键词： internal model controller partial least squares latent subspace servo behavior disturbance rejection

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Simultaneous elution of polycyclic aromatic hydrocarbons and heavy metals from contaminated soil by two amino acids derived from β-cyclodextrins

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Journal of Environmental sciences 2010年第12期22卷 1910-1915页

作者： Chengjian Yang Qingru Zeng Yunzhong Wang Bohan Liao Jian Sun Hui Shi Xingdou Chen School of Environment & Municipal Engineering Xi'an Architecture Science Technology University Xi'an 710055 China. Department of Environmental Science Hunan Agricultural University Changsha 410128 China Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area Department of Environmental Science and Engineering South China University of Technology Guangzhou 510006 China

Two highly water-soluble amino acids, which derived from β-CDs, i.e., glutamic acid-β-cyclodextrin （GluCD） and ethylene-diamine- β-cyclodextrin （EDCD）, were synthesized and were examined for their effect on solubilization of anthracene （ANT）, complexation of cadmium （Cd^2＋）, and elution removal of ANT and Cd^2＋ in soil. The results showed that GluCD and EDCD were powerful complexant for ANT and Cd^2＋. In the presence of 10 g/L GIuCD and EDCD, the solubilization of ANT increased by 47.04 and 23.85 times compared to the control, respectively. GluCD resulted in approximately 90% complexation of Cd^2＋ while 70% complexation was observed for EDCD. Simultaneously, GluCD and EDCD could greatly enhance the elution removal of ANT and Cd^2＋ from soil. GluCD resulted in the highest elution efficiency of ANT and Cd^2＋. With the addition of 10 g/L GluCD, 53.5% of ANT and 85.6% of Cd^2＋ were eluted, respectively. The ANT had a negligible effect on the Cd^2＋ removal due to different complexing sites of ANT and Cd^2＋, while Cd^2＋ enhanced the ANT removal under the addition of GluCD because Cd^2＋ neutralized the -COOH group of GIuCD. Adversely, the removal of ANT was decreased with Cd^2＋ under the addition of EDCD, this was due to the fact that Cd^2＋ enhanced the polarity of EDCD molecule and inhibited the complexation between ANT and EDCD. The study suggested that GluCD could be preferred and be successfully applied to remediation of heavy metals or organic compounds in contaminated soil.

关键词： anthracene cadmium cyclodextrin solubilization elution soil

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Velocity analysis for UHF RFID vehicle license plate

Velocity analysis for UHF RFID vehicle license plate

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2010 International Conference on Optoelectronics and Image Processing, ICOIP 2010

作者： Mo, Ling-Fei Qin, Chun-Fang Tang, Xiao-Fen State Key Laboratory of Industrial Control Technology Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China Huawei Technologies Co. Ltd. Shenzhen 518129 China

ISBN: (纸本)9780769542522

Ultra-high-frequency radio frequency identification (RFID UHF) vehicle license plate is a promising technology for traffic management because of its special advantages. In practical applications, the reading effect is closely related to the vehicle velocity. This paper analyzed the effective vehicle velocity for the steadily reading of the UHF RFID vehicle license plate. The smallest time for one single tag to be effectively read, the relationship between the tags reads and the vehicle velocity, the maximum vehicle velocity to be effective read, are analyzed and measured. Measurement results were in good agreement with the theoretical analysis. Studies have shown that the reading stability of the UHF RFID vehicle license plate is closely related to the effective read range of RFID tags, readers reading cycle and the vehicle velocity. In general vehicle velocity, UHF RFID vehicle license can be effectively read. © 2010 IEEE.

关键词： Radio frequency identification (RFID)

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Evaluation on railway passenger service quality using comprehensive fuzzy evaluation model and neural network

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Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (science and technology) 2011年第SUPPL. 1期42卷 72-78页

作者： Ji, Hai-Yan Xing, Zong-Yi Qin, Yong Jia, Li-Min Wu, Guo-Jun School of Mechanical Engineering Nanjing University of Science and Technology Nanjing 210094 China State Key Lab. of Traffic Control and Safety Beijing Jiaotong University Beijing 100044 China Passenger Transport Department of Shanghai Railway Bureau Nanjing 210094 China

To evaluate railway passenger service quality objectively and precisely, an evaluation index system was established based on analysis of the relevant factors, i.e., security, punctuality, economy, convenience and comfort. Then two evaluation approaches were proposed based on the comprehensive fuzzy evaluation model and neural network. Finally the proposed approaches were illustrated to evaluate the service quality in Nanjing Station based on questionnaire investigation. The results show that the proposed methods can evaluate service quality effectively and successfully, and that the approaches can provide theoretical basis for improving and enhancing railway passenger service quality.

关键词： Quality control

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A video tracking system for limb motion measurement in small animals

A video tracking system for limb motion measurement in small...

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2010 International Conference on Optoelectronics and Image Processing, ICOIP 2010

作者： Xu, Qi Cai, Cong Zhou, Houlun Ren, Hangkong KEY Lab. of Image Processing and Intelligent Control Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan China Department of Anatomy Tongji Medical College Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9780769542522

Motion analysis can provide useful information for biomedical researches. In this paper, we have presented a video tracking system for limb motion measurement in small animals. The system employs a consumer-grade video camera to record the locomotion of a rat, which can reduce the cost of the system. Three matching methods are available for different application. Moreover, a new algorithm to forecast the joint positions based on the polynomial fitting and improved Kalman filtering algorithms has been proposed, not only for limiting the region of matching, but also for marker occlusion and various maneuverability of the limb. Two methods are also applied to detect mismatch for ensuring a reliable tracking. Once 2D markers positions are collected, kinematic characteristics of the motion can be derived. Finally, the experimental results of the tracking system are presented. © 2010 IEEE.

关键词： Motion analysis

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