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2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014

作者： Zhou, Xi Yi Liu, Li Qiang Zhang, Ge School of Information and Communication Engineering Hunan Institute of Science and Technology Yueyang 414006 China Key Laboratory of Optimization and Control for Complex Systems College of Hunan Province Yueyang 414006 China

ISBN: (纸本)9783038350996

An on-demand weighed clustering algorithm is proposed against the limitation of wireless sensor network nodes with limited energy. This algorithm obtains more local network information by means of information interaction between nodes, and by comprehensively considering such factors as the current energy value, degree and transmission power, etc. of nodes, it makes different clustering decisions as per different application backgrounds of networks. Simulation results show that this algorithm has a more rational clustering by reducing energy consumption and lengthening network lifetime, compared to Low Energy Adaptive Clustering Hierarchy, a representative clustering algorithm. © (2014) Trans Tech Publications, Switzerland.

关键词： Clustering algorithms

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MPA EEG model-based vigilance level estimation by artificial neural network

MPA EEG model-based vigilance level estimation by artificial...

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2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011

作者： Wang, Jiesen Wang, Bei Wang, Xingyu Nakamura, Masatoshi Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Ministry of Education Shanghai China Research Institute of Systems Control Institute for Advanced Research and Education Saga University Saga Japan

ISBN: (纸本)9781424493524

In this paper, the vigilance levels during day time short nap sleep were estimated on the basis of Markov Process Amplitude (MPA) EEG model. The ultimate purpose was to adopt the MPA model to discriminate three levels of vigilance through a simple neural network. A set of parameters were firstly calculated based on MPA EEG model. Secondly, correlation analysis was adopted to extract effective parameters to ensure a small amount of inputs of the artificial neural network. The outputs of artificial neural network were the classified three levels: wakeful, drowsy and sleep. The obtained estimation result showed that the accuracy of wakeful was about 90.0%, drowsy 80.0%, and sleep 93.3%. © 2011 IEEE.

关键词： Markov processes

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Advanced variable window stereo matching algorithm

Advanced variable window stereo matching algorithm

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4th International Conference on Intelligence Science and Big Data Engineering, IScIDE 2013

作者： Guo, Longyuan Sun, Changyin Zhang, Guoyun Wu, Jianhui Hunan Institute of Science and Technology Key Laboratory of Optimization and Control for Complex Systems College of Hunan Province Yueyang 414006 China School of Automation Southeast University Nanjing 210096 China

ISBN: (纸本)9783642420566

Variable window stereo matching methods overcome the disadvantages of fixed window methods. Using this base idea, an advanced Variable window stereo matching method is proposed. The method takes a certain threshold to determine matching windows. In order to improve the accuracy of matching further, a cost function using the non-parametric and gray value is proposed. The experimental results show that this method can generates more accurate disparity map. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Cost functions

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Synchronization of unicycle robots with proximity communication networks 19

Synchronization of unicycle robots with proximity communicat...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Liu, Zhixin Wang, Jinhuan Hu, Xiaoming Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing100190 China School of Sciences Hebei University of Technology Tianjin300401 China Optimization and Systems Theory KTH Royal Institute of Technology Stockholm10044 Sweden

ISBN: (纸本)9783902823625

In this paper synchronization of both the orientation and velocity for a group of unicycle robots is studied. It is assumed that a robot can only detect and obtain information from those robots that lie in the proximity (within certain distance). A minimum dwell time is imposed on the updating of neighborhood relation in the controller in order to avoid introducing chattering in the closed-loop system that may be caused by abrupt changes of the relation, which as a consequence implies that the neighbor information will be updated only at discrete time instants in the control. In the paper a distributed feedback control law is designed for each agent, and a sufficient condition for uniformly and independently distributed initial states is provided for reaching the synchronization, which depends on the neighborhood radius, the maximum initial translational velocity and the dwell time. © IFAC.

关键词： Sampled data control systems

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Robust tube-based predictive control of continuous protein production by purple non-sulfur bacteria

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IFAC-PapersOnLine 2024年第14期58卷 724-729页

作者： Matheus C.R. Nunes Laurent Dewasme Manon Gilson Guillaume Bayon-Vicente Baptiste Leroy Alain Vande Wouwer Systems Estimation Control and Optimization (SECO) University of Mons Belgium Laboratory of Proteomics and Microbiology University of Mons Belgium

A tube-based nonlinear model predictive controller (NMPC) is developed to regulate a continuous bioprocess of purple non-sulfur bacteria (PNSB). The controller employs a macroscopic model that exhibits significant parametric uncertainty due to the restricted availability of experimental data for parameter identification. The proposed model describes microbial protein production during PNSB growth on fructose and glucose. This work aims to assess the robustness of the proposed control strategy and compare the performance with classical NMPC. To this end, both controllers are challenged in a Monte-Carlo study, with identical disturbances in the form of parametric variations spread over 100 different scenarios. The resulting trajectories, as well as biomass and protein productivity levels, confirm the better performance of the robust tube-based controller.

关键词： model predictive control process control parameter estimation biotechnology chemostat

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Automatic prediction of sleep level during day time short nap

Automatic prediction of sleep level during day time short na...

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IEEE/Institute of Complex Medical Engineering International Conference on Complex Medical Engineering

作者： Wang, Bei Fu, Xiuyan Wang, Xingyu Nakamura, Masatoshi Key Laboratory of Advanced Control and Optimization for Chemical Processes School of Information Science and Technology East China University of Science and Technology Shanghai China Research Institute of Systems Control Institute for Advanced Research and Education Saga University Saga Japan

ISBN: (纸本)9781424493241

The day time nap sleep has the significant prophylactic function to our health and working efficiency. In this study, the prediction of sleep level for day time short nap was investigated. The ultimate purpose was to develop the automatic analysis technique for nap sleep interpretation. Firstly, the conditional probabilities of sleep stage awake, stage 1 and stage 2 were calculated for the consecutive data segments based on a set of parameters. Secondly, the sleep level of next data segment was predicted according to the obtained conditional probabilities. The prediction of sleep level reflected the future sleep tendency and was helpful for automatic nap sleep interpretation. © 2011 IEEE.

关键词： Forecasting

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State estimation for delayed switched positive systems: delayed radius approach

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Science China(Information Sciences) 2024年第8期67卷 190-205页

作者： Weizhong CHEN Zhongyang FEI Xudong ZHAO Zheng-Guang WU School of Electronics and Information Xi'an Polytechnic University Research Institute of Intelligent Control and Systems Harbin Institute of Technology Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education Dalian University of Technology School of Control Science and Engineering Dalian University of Technology State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang University

In this paper, an interval estimation scheme is developed for delayed switched positive systems（DSPS） with mode-dependent average dwell time switching. A lossless zonotopic estimation approach is proposed for the delayed intersection zonotope with the positive generator matrix. First, considering the existence of asynchronism between the system mode and the correction matrix mode, the mismatched intersection zonotope is constructed for DSPS to verify the consistency between the system model and ***, by utilizing the introduced radius definitions, the ?∞performance is addressed to optimize the size of delayed intersection zonotopes. Subsequently, we present a joint-design approach of switching signals and the mode-dependent correction matrix by constructing positive generator matrix-based delayed radius functions. Furthermore, guaranteed nonnegative state bounds are derived for the considered DSPS based on the proposed lossless zonotopic estimation criteria. Finally, detailed simulations are conducted to validate the feasibility and superiority of the developed methods.

关键词： delayed switched positive systems interval estimation asynchronous correction matrix zonotopes mode-dependent average dwell time

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Synchronization of heterogeneous dynamical networks via distributed impulsive control

Synchronization of heterogeneous dynamical networks via dist...

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作者： He, Wangli Han, Qing-Long Qian, Feng Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Shanghai200237 China Centre for Intelligent and Networked Systems Central Queensland University RockhamptonQLD4702 Australia

ISBN: (纸本)9781479940325

This paper studies global synchronization between a heterogeneous dynamical network and a known target trajectory via distributed impulsive control. Synchronization with an error level, called quasi-synchronization, is analyzed by utilizing the time-varying Lyapunov function. Some sufficient quasi-synchronization conditions are presented and explicit expressions of error levels are derived. Furthermore, the effects of the pinning control matrix and the coupling strength are explored. Unlike the continuous pinning feedback control, it is shown that a large coupling strength will destroy synchronization in the present of impulsive controller, which is also verified by our simulations. © 2014 IEEE.

关键词： Synchronization

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Handwriting trajectory movements controlled by a bêta-elliptic model 7

Handwriting trajectory movements controlled by a bêta-ellip...

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7th International Conference on Document Analysis and Recognition, ICDAR 2003

作者： Bezine, Hala Alimi, Adel M. Derbel, Nabil National School of Engineers of Sfax BP. W Sfax3038 Tunisia Laboratory of Intelligent Control and Optimization of Complex Systems National School of Engineers of Sfax BP. W Sfax3038 Tunisia

ISBN: (纸本)0769519601

This paper studies the dependence between geometry and kinematics in handwriting generation Movements. Based on a handwriting generation model developed earlier, movements parameters are extracted directly from on-line recording of velocity profiles. These parameters, which reflect dynamic process, are found to be highly related to the geometry of handwriting movements. The overall approach is based upon the hypothesis that complex human movements can be segmented into, basic and simple units. In other words, due to the intrinsic properties of the neuromuscular system involved in a rapid writing task, there is a class of simple movements, hereafter called strokes. More complex movements are thus generated by the addition of the various strokes belonging to such a class. © 2003 IEEE.

关键词： Bêta-elliptic model Cursive handwriting Handwriting modeling

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The Number of Leaders Needed for Consensus

The Number of Leaders Needed for Consensus

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Joint 48th IEEE Conference on Decision and control and 28th Chinese control Conference

作者： Zhixin Liu Jing Han Xiaoming Hu Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceCAS Optimization and Systems Theory Royal Institute of Technology

In order to have a self-organized multi-agent system exhibit some expected collective behavior,it is necessary that some agents(called leaders) are informed about the expected behavior and able to *** a fundamental question is: how many such leaders are needed? Naturally the answer depends on the model *** this paper the model proposed by Vicsek et *** used for the *** analyzing the system dynamics and estimating the characteristics of the initial neighbor graph,a lower bound on the ratio of leaders is provided that guarantees the expected consensus being reached almost surely.

关键词： leader-follower consensus multi-agent systems

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