检索结果-内蒙古大学图书馆

A Novel Method for Flatness Pattern Recognition via Least Squares Support Vector Regression

Journal of Iron and Steel Research International 2012年第3期19卷 25-30页

作者： ZHANG Xiu-ling, ZHANG Shao-yu, TAN Guang-zhong, ZHAO Wen-bao (key laboratory of industrial computer control engineering of hebei Province, National engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, hebei, China) Key Laboratory of Industrial Computer Control Engineering of Hebei Province National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University Qinhuangdao 066004 Hebei China

To adapt to the new requirement of the developing flatness control theory and technology, cubic patterns were introduced on the basis of the traditional linear, quadratic and quartic flatness basic patterns. Linear, quadratic, cubic and quartic Legendre orthogonal polynomials were adopted to express the flatness basic patterns. In order to over- come the defects live in the existent recognition methods based on fuzzy, neural network and support vector regres- sion （SVR） theory, a novel flatness pattern recognition method based on least squares support vector regression （LS-SVR） was proposed. On this basis, for the purpose of determining the hyper-parameters of LS-SVR effectively and enhan- cing the recognition accuracy and generalization performance of the model, particle swarm optimization algorithm with leave-one-out （LOO） error as fitness function was adopted. To overcome the disadvantage of high computational complexity of naive cross-validation algorithm, a novel fast cross-validation algorithm was introduced to calculate the LOO error of LDSVR. Results of experiments on flatness data calculated by theory and a 900HC cold-rolling mill practically measured flatness signals demonstrate that the proposed approach can distinguish the types and define the magnitudes of the flatness defects effectively with high accuracy, high speed and strong generalization ability.

关键词： flatness pattern recognition least squares support vector regression cross-validation

来源：评论

学校读者我要写书评

暂无评论

Jamming attack on Cyber-Physical Systems: A game-theoretic approach

Jamming attack on Cyber-Physical Systems: A game-theoretic a...

引用

IEEE International Conference on Cyber Technology in Automation, control, and Intelligent Systems

作者： Yuzhe Li Ling Shi Peng Cheng Jiming Chen Daniel E. Quevedo Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong State Key Lab. of Industrial Control Technology Zhejiang University China School of Electronic Engineering and Computer Science University of Newcastle Australia

We consider security issues in Cyber-Physical Systems (CPSs). A sensor node communicates with a remote estimator through a wireless channel which may be jammed by an external attacker. With energy constraints for both the sensor and the attacker, the interactive decision making process of when to send and when to attack is studied. We formulate a game-theoretical framework and prove that the optimal strategies for both sides constitute a Nash equilibrium. The derivation of the optimal strategies for both sides is also provided with examples.

关键词： Games Nash equilibrium Tin Linear programming computer crime

来源：评论

学校读者我要写书评

暂无评论

Cooperative and Active Sensing in Mobile Sensor Networks for Scalar Field Mapping

Cooperative and Active Sensing in Mobile Sensor Networks for...

引用

IEEE International Conference on Automation Science and engineering

作者： Hung Manh La Weihua Sheng Jiming Chen Center for Advanced Infrastructure and Transportation (CAIT) Rutgers University Piscataway NJ 08854 USA School of Electrical and Computer Engineering Oklahoma State University Stillwater OK 74078 USA State Key Lab. of Industrial Control Technology Department of Control Zhejiang University Hangzhou P.R.China 310027

ISBN: (纸本)9781479915132

Scalar field mapping has many applications including environmental monitoring, search and rescue, etc. In such applications there is a need to achieve a certain level of confidence regarding the estimates at each location. In this paper, a cooperative and active sensing framework is developed to enable scalar field mapping using multiple mobile sensor nodes. The cooperative and active controller is designed via the real-time feedback of the sensing performance to steer the mobile sensors to new locations in order to improve the sensing quality. During the movement of the mobile sensors, the measurements from each sensor node and its neighbors are taken and fused with the corresponding confidences using distributed consensus filters. As a result an online map of the scalar field is built with a certain level of confidence of the estimates. We conducted computer simulations to validate and evaluate our proposed algorithms

关键词： Active sensing Sensor fusion Sensor networks

来源：评论

学校读者我要写书评

暂无评论

Object Tracking Method Based on SURF

Object Tracking Method Based on SURF

引用

2012 Conference on Modelling, Identification and control (MIC2012)

作者： Hu Shuo Wu Na Song Huajun Key Lab of Industrial Computer Control Engineering of Hebei Province Institute of Electrical EngineeringYanshan University Key Lab of Measurement Technology & Instrumentation of Hebei Province Institute of Electrical EngineeringYanshan University Institute of Information and Control Engineering China University of Petroleum(East China)

ISBN: (纸本)9781627483766

An object tracking algorithm based on SURF is presented in this *** points are detected by SURF detector in reference region which is located in the first frame *** the following sequences,the SURF feature points are extracted in a larger window which is selected as test *** the matching stage,we calculate the Euclidean distance between the descriptor vectors of interest points in the test image and ones in the reference *** proposed algorithm is implemented on an embedded platform with TI's DM6446 high performance *** experimental results show that our system implements a real-time tracking with robustness against appearance variations,scale change,and cluttered scenes.

关键词： Object track SURF descriptor feature detection DM6446

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Development and investigation of efficient artificial bee colony algorithm for numerical function optimization” [Appl. Soft Comput. 12 (2012) 320–332]

引用

Applied Soft Computing 2013年第4期13卷 2143-2143页

作者： Guoqiang Li Peifeng Niu Xingjun Xiao Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

来源：评论

学校读者我要写书评

暂无评论

Effect of the pixel photosensor width on the recovered spectral intensity in interferometric imagers and the correction

Effect of the pixel photosensor width on the recovered spect...

引用

2012 International Conference on Materials engineering and Automatic control, ICMEAC 2012

作者： Hu, Shuo Wu, Na Zhang, Xuguang Key Laboratory of Industrial Computer Control Engineering of Hebei Province Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China Key Laboratory of Measurement Technology and instrumentation of Hebei Province Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China

ISBN: (纸本)9783037854587

The equation for the recovered spectrum is derived in spatially modulated interferometric imagers, which takes into account the pixel photosensor width. The results show that the effect of the pixel photosensor width on the recovered spectral intensity is related to the wavenumber and the intensity of the incident spectrum, which causes the broadband spectral waveform changed, and the distortion increases with the spectral bandwidth increasing. A mathematical algorithm is given to correct the distortion, and the experimental results show this method is effective. © (2012) Trans Tech Publications, Switzerland.

关键词： Pixels

来源：评论

学校读者我要写书评

暂无评论

Hybrid neural network based on ART2 - BP information fusion control in Circulating Fluidized Bed Boiler (CFBB)

Hybrid neural network based on ART2 - BP information fusion ...

引用

5th International Conference on Advances in Brain Inspired Cognitive Systems, BICS 2012

作者： Niu, Peifeng Ma, Yunfei Li, Pengfei Zhang, Yang Li, Guoqiang Zhang, Xiangye Key Lab. of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Qinhuangdao 066004 China

ISBN: (纸本)9783642315602

Circulating Fluidized Bed Boiler (CFBB) involves a kind of combustion boiler that can clean and desulfurize the coal efficiently in the combustion process. It is highly adapted to all kinds of high quality coals and low grade coals. CFB boiler has more superior performance, features and a wide range of applications than other boilers, accordingly, problems on automatic control underlined in the combustion process blocked its wide application. This is a typical thermal object, hard to control,and due to the special combustion type of CFBB that makes it a great inertia, multivariable, strong coupling, nonlinear, time-varying object. This paper designs an ART2-BP-BP Hybrid Neural Network of fusion cluster control system and completes data fusion from the data level, the feature level to the decision level. Results of simulation show that the control system in this paper is feasible and effective, in particular, the control system still has more satisfactory control effects in the case of a variety of sensor failures. © 2012 Springer-Verlag.

关键词： control systems

来源：评论

学校读者我要写书评

暂无评论

Effects and solution of electric power steering system on vehicle handling stability

引用

Journal of Computational Information Systems 2012年第1期8卷 65-72页

作者： Zang, Huaiquan Geng, Jia Key Lab of Industrial Computer Control Engineering of Hebei Province Institute of Electrical and Engineering Yanshan University Qinhuangdao 066004 China

To research the effects of electric power steering (EPS) system on vehicle handling stability and to improve it, this paper derives the expressions of road feeling and steering sensitivity, regards which as the performance targets that estimates the vehicle handling stability in addition. Finally, a dynamic compensation controller is presented for the EPS system. The simulation results show the compensated EPS system takes account of a good steering feeling and a rapid response of steering sensitivity. Its handing stability is better than the EPS vehicle which only considers the power effect. © 2012 Binary Information Press January 2012.

关键词： Steering

来源：评论

学校读者我要写书评

暂无评论

The dynamic control during mode-switches for PHEV

引用

Journal of Information and Computational Science 2012年第15期9卷 4501-4508页

作者： Zang, Huaigang Han, Yanlong Niu, Yanxia Key Lab. of Industrial Computer Control Engineering of Hebei Province National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Qinhuangdao 066004 China Key Lab. of Industrial Computer Control Engineering of Hebei Province Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China

The control system of a hybrid electric vehicle assigns powers between the engine and the motor according to the vehicle's running conditions, switching the optimum driving mode. So, how to keep the torque transition swift and steady during mode-switches becomes an important aspect of hybrid electric vehicles' control problem. To solve this kind of problems, basing on the estimation of the engine's torque, this paper uses the motor's output to compensate power shortages of the vehicle caused by the engine's time-relay, and verifies its efficiency by building simulation models. The results illustrate that torque dynamic compensation algorithms can effectively guarantee the desired torque during mode-switches, and make sure swiftness and stability of torque transition. © 2012 by Binary Information Press.

关键词： Torque

来源：评论

学校读者我要写书评

暂无评论

An Improved Method for MRAC System of Indirectly Designed

An Improved Method for MRAC System of Indirectly Designed

引用

2012年控制与信息国际会议

作者： Huishan Han Yan Liu Defang Cheng Xue Gao Xingtai Polytechnic College Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University

Based on Lyapunov stability theorem, a MRAC system was researched to solve that differential value of plant output is unknown. Meanwhile an improved design for MRAC system aimed on the factor of restricting convergence of system is given. The method not only solves the problem that makes the system can not work well as a result of the adjustable parameters, but also improves the convergence of plant. The simulation graphs have shown that the plant can follow the output of the reference model quit well

关键词： MRAC system · Lyapunov theory · Convergence

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：