检索结果-内蒙古大学图书馆

American control Conference

作者： Deyuan Meng Kevin L. Moore Seventh Research Division and the Department of Systems and Control Beihang University (BUAA) Beijing 100191 P. R. China Department of Electrical Engineering and Computer Science Colorado School of Mines Golden CO 80401 USA

ISBN: (纸本)9781479932757

This paper considers the robust convergence problem of iterative learning control (ILC) for discrete-time systems in the presence of iteration-varying uncertain plant parameters. If the uncertain parameters all converge along the iteration axis, then the perfect tracking property of ILC can be achieved under certain conditions. Otherwise, the tracking objective of ILC can be achieved within a bound if some of the uncertain parameters are bounded, rather than convergent, along the iteration axis.

关键词： plant parameters Plant uncertain iterative methods Converge time system Uncertainty device parameter

来源：评论

学校读者我要写书评

暂无评论

Morphology Based Particle Filtering Algorithm for Point Target Tracking

Morphology Based Particle Filtering Algorithm for Point Targ...

引用

第25届中国控制与决策会议

作者： Rong Zhou Bo Liu Jing Teng School of Control & Computer Engineering North China Electrical Power University National Space Science Center Chinese Academy of Science

ISBN: (纸本)9781467355322

The problem of tracking maneuvering point target in optical image sequence using a single sensor is considered in this paper. A morphology based method is proposed to pre-detect target area. This pre-detection begins with expansion of the target area by dilation using a selected rectangle structuring element. Then the target energy is enhanced by frame-addition. Finally, the target area is detected by getting the maximum intensity based on the character of target correlation between frames. Therefore, the conventional uniform distribution of particles over the whole sensor field-of-view is shrunk to the pre-detection target area. The proposed morphology based particle filtering algorithm thus enhances the particles representation. To demonstrate the efficiency of the proposed method, it is compared with the particle filter proposed by Salmond. The simulations indicate that desired tracking quality is ensured by narrowing initial particle distribution derived from morphology based pre-detection.

关键词： Particle Filter, Morphology, Point Target Tracking

来源：评论

学校读者我要写书评

暂无评论

Multilinear-model Dynamic Matrix control:A Normalized-eigenvalue-based Fuzzy Weighting Method

Multilinear-model Dynamic Matrix Control:A Normalized-eigenv...

引用

第三十二届中国控制会议

作者： LUO Yunhui LIU Hongbo JIA Zhiping SONG Ruifu School of Computer Science and Technology Shandong University School of Light Chemistry and Environment Engineering Shandong Polytechnic University School of Control Science and Engineering Shandong University

ISBN: (纸本)9781479900305

Multi-model based scheme provides a valid methodology for the control problem of nonlinear systems,which uses the philosophy of Divide and *** space division determines which local model gets active or how all local models (/controllers) are weighted for control implementing in the current *** paper presents a novel fuzzy weighting method embedding in multilinear-model dynamic matrix control(DMC).Fuzzy weights of local models,calculated by Takagi-Sugeno (TS) fuzzy modeling for controlled systems,are relative to a type of nonlinear measures - normalized eigenvalues,derived from state-space representatives of the local models at different operation ***,an overall weighted model is integrated into the conventional DMC framework,and disturbances and input/output constraints can be dealt *** proposed multi-model control method is a combination of DMC and TS modeling,thus it inherits advantages of both *** studies of two classic nonlinear systems illustrate the effectiveness of the proposed approach.

关键词： Multi-model Dynamic Matrix control(DMC) Takagi-Sugeno Fuzzy Model Nonlinear Processes

来源：评论

学校读者我要写书评

暂无评论

Corner based Hand Gesture Recognition for Lightweight Appliance control System

Corner based Hand Gesture Recognition for Lightweight Applia...

引用

2012 International Conference on Intelligent control and Information Processing (ICIP 2012)

作者： Zhenyu Meng Jeng-Shyang Pan Kuo-kun Tseng Ming Zhao Wu-Chih Hu Chi-Hui Hung Intelligence Control Research Center Guangzhou Institute of Advanced Technology Chinese Academy of Sciences Innovative Information Industry Research Center Computer Science Department Shenzhen Graduate School of Harbin Institute of Technology National Penghu University of Science and Technology National Quemoy University

In this paper, we proposed a lightweight approach of hand gesture recognition for appliance control system, which is a new corner based detector with skin detection and foreground extraction. The skin detection is used as a preprocessing segmentation, and motion based foreground extraction for hand segmentation is also applied to make it more accuracy in variation of light condition, contrast between skin and circumstance. After hand segmentation is done, light-weight corner based recognition is used to recognize the meaning of hand gesture. The performance and computational complexity is evaluated at last as well. The experiments shown our approach has the advantages over the conventional hand gesture recognition.

关键词： Hand gesture,Appliance,Lightweight,control system,Corner

来源：评论

学校读者我要写书评

暂无评论

Channel estimation for 60GHz wireless local area networks with massive receiving antennas

Channel estimation for 60GHz wireless local area networks wi...

引用

International Workshop on High Mobility Wireless Communications (HMWC)

作者： Dian Fan Zhangdui Zhong Gongpu Wang Feifei Gao State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China School of Computer and Information Technology Beijing Jiaotong University Beijing China Tsinghua National Laboratory for Information Science and Technology Beijing China

ISBN: (纸本)9781479956470

The utilization of the spectrum surrounding 60GHz can be a promising technology for wireless communication systems. This paper investigates the channel estimation problem for wireless systems at 60GHz frequency band with massive receiving antennas. The system model is built up over the massive frequency-selective channels. Moreover, an algorithm is proposed to estimate the large number of channel parameters. It is found that the suggested algorithm works well and can obtain all channel parameters without transmitting large number of training symbols. Finally, simulation results are provided to corroborate our proposed studies.

关键词： Receiving antennas Antenna arrays Channel estimation Wireless communication Estimation Transmitting antennas Direction-of-arrival estimation

来源：评论

学校读者我要写书评

暂无评论

A clustering based multiobjective evolutionary algorithm

A clustering based multiobjective evolutionary algorithm

引用

Congress on Evolutionary Computation

作者： Hu Zhang Shenmin Song Aimin Zhou Xiao-Zhi Gao Center for Control Theory and Guidance Technology Harbin Institute of Technology Harbin China Department of Computer Science and Technology East China Normal University Shanghai China Department of Electrical Engineering and Automation School of Electrical Engineering Aalto Finland

In this paper, we propose a clustering based multiobjective evolutionary algorithm (CLUMOEA) to deal with the multiobjective optimization problems with irregular Pareto front shapes. CLUMOEA uses a k-means clustering method to discover the population structure by partitioning the solutions into several clusters, and it only allows the solutions in the same cluster to do the reproduction. To reduce the computational cost and balance the exploration and exploitation, the clustering process and evolutionary process are integrated together and they are performed simultaneously. In addition to the clustering, CLUMOEA also uses a distance tournament selection to choose the more similar mating solutions to accelerate the convergence. Besides, a cosine nondominated selection method considering the location and distance information of the solutions are further presented to construct the final population with good diversity. The experimental results show that, compared with some state-of-the-art algorithms, CLUMOEA has significant advantages on dealing with the given test problems with irregular Pareto front shapes.

关键词： Sociology Statistics Shape Convergence Vectors Evolutionary computation Optimization

来源：评论

学校读者我要写书评

暂无评论

Event-Triggered State Estimation for a Class of Nonlinear Stochastic Systems with Mixed Time Delays

Event-Triggered State Estimation for a Class of Nonlinear St...

引用

第三十三届中国控制会议

作者： Lei Zou Zidong Wang Derui Ding Hong Qiao Research Institute of Intelligent Control and Systems Harbin Institute of Technology Department of Computer Science Brunel UniversityUxbridgeMiddlesexUB8 3PHUnited Kingdom School of Information Science and Technology Donghua University Institute of Automation Chinese Academy of Sciences

ISBN: (纸本)9781479947249

In this paper, the state estimation problem is investigated for a class of nonlinear stochastic systems with mixed time delays under event-triggered scheme. Based on the proposed event-triggered scheme, the new measurement is sampled and then transmitted to the estimator only when the difference between the current measurement and the previous transmitted measurement is greater than a fixed threshold, thereby reducing the network traffic. Attention is focused on the design problem of the estimator such that the estimation error in mean square is bounded and then minimized. A novel Lyapunov function is employed to derive sufficient condition for the existence of the desired state estimators whose gain matrix can be computed by solving a convex problem. The gain matrix of the estimator is characterized in order that an asymptotic bound of the estimation error is found and subsequently minimized. A numerical simulation is provided to illustrate the effectiveness of the results.

关键词： Event-triggered scheme,mixed time delays,nonlinear systems,ultimately boundedness

来源：评论

学校读者我要写书评

暂无评论

Smoke detection based on frequency of smoke's contour

引用

ICIC Express Letters 2013年第11期7卷 2933-2940页

作者： Jiao, Runhai Li, Wei Qi, Xiang Li, Yanhua School of Control and Computer Engineering North China Electric Power University No. 2 Beinong Road Changping District Beijing 102206 China School of Computer Science and Engineering Beihang University No. 37 Xueyuan Road Haidian District Beijing 100191 China

In order to reduce the damages caused by fire disaster, a novel method detecting smoke in video is proposed in this paper. Since the shape of smoke is variously changed at any time by airflow, edge of the smoke will change all times. In this paper the basic strategy of smoke-frequency judgment is using the contour. A pixel at the edge of a flame in a video sequence could appear and disappear several times in one second. The appearance of an object whose contour oscillates at a frequency greater than 0.5Hz may be the presence of smoke. In addition, the spreading attribute of smoke and smoke blur, and so on are combined to reach the final decision. Experimental results show that this method can achieve earlyfire accident detection with high accuracy and strong antijamming ability. © 2013 ISSN 1881-803X.

关键词： Smoke

来源：评论

学校读者我要写书评

暂无评论

Comparison between wireless and wired EEG recordings in a virtual reality lab: Case report 5

Comparison between wireless and wired EEG recordings in a vi...

引用

5th IEEE International Conference on Cognitive Infocommunications, CogInfoCom 2014

作者： Török, Ágoston Sulykos, István Kecskés-Kovács, Krisztina Persa, György Galambos, Péter Kóbor, Andrea Czigler, István Csépe, Valéria Baranyi, Péter Honbolygó, Ferenc Brain Imaging Centre RCNS Hungarian Academy of Sciences Budapest Hungary Doctoral School of Psychology Eötvös Loránd University Budapest Hungary Institute of Psychology Eötvös Loránd University Budapest Hungary Institute of Cognitive Neuroscience and Psychology RCNS Hungarian Academy of Sciences Budapest Hungary Institute of Psychology University of Debrecen Debrecen Hungary Institute for Computer Science and Control Hungarian Academy of Sciences Budapest Hungary

ISBN: (纸本)9781479972807

Wireless EEG is a promising tool that can bring neuroscience research closer to the study of perception and cognition in realistic scenarios. Perhaps the most interesting approach is to combine wireless EEG and virtual reality, where one can create and manipulate realistic multimodal environments. However EEG recording during locomotion in a virtual reality lab is exposed to several types of electrical noise generating hardware. In the current paper we present two studies. In the first we turned on and off possible sources of electrical noise. We found that although electrical noise is present in the data, it is typically localized above the frequency ranges of brain related activity. In the second study we measured event related potential changes to a simple visual stimulus using wireless and wired setup in a virtual reality room and in a psychophysiology lab. We found that the shape of the N1, an early component of visual processing is not affected by the type of signal transmission but importantly its latency is different in the two labs. © 2014 IEEE.

关键词： Virtual reality

来源：评论

学校读者我要写书评

暂无评论

Lidar-Assisted Wind Turbine Feedforward Torque controller Design Below Rated

Lidar-Assisted Wind Turbine Feedforward Torque Controller De...

引用

American control Conference

作者： Na Wang Kathryn E. Johnson Alan D. Wright Carlo E. Carcangiu Colorado School of Mines Department of Electrical Engineering and Computer Science Golden CO 80401 USA Colorado School of Mines Department of Electrical Engineering and Computer Science and Joint Appointee at National Renewable Energy Laboratory's National Wind Technology Center Golden CO 80401 USA National Renewable Energy Laboratory Golden CO 80401 USA Closed-Loop Control at ALSTOM WIND S.L.U. Barcelona Spain

ISBN: (纸本)9781479932757

Two below-rated feedforward torque control strategies are investigated for a megawatt-scale commercial turbine to regulate rotor speed and reduce turbine structural loads. The investigated regime for this research is the transition region when the turbine is operating just below rated wind speed. In this transition region, the rotor speed has reached its rated value but the generator torque has not. The first of the two controllers designed is a nonlinear feedforward controller that is based on aerodynamic torque balance computed from a light detection and ranging (lidar) measurement and a feedback power measurement from the turbine. A linear disturbance accommodating control (DAC) based torque controller has also been adapted and compared with the nonlinear control strategy. This DAC depends only on the lidar feedforward measurement without using feedback measurement from the turbine. The controllers are verified with a nonlinear FAST turbine model and turbulent wind fields.

关键词： Torque Feedforward neural networks Rotors Wind turbines Laser radar Wind speed Poles and towers

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：