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Estimation, Intervention and Interaction of Multi-agent systems

Acta Automatica Sinica 2013年第11期39卷 1796-1804页

作者： Jiang-Ping HU Zhi-Xin LIU Jin-Huan WANG Lin WANG Xiao-Ming HU School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 China Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China School of Sciences Hebei University of Technology Tianjin 300401 China Department of Automation Shanghai Jiao Tong University Shanghai 200240 China Department of Mathematics Royal Institute of Technology (KTH) Stockholm 10044 Sweden

In this paper we provide a brief survey on recent research on multi-agent systems. We focus on results in three areas of the research, namely, estimation and filtering, intervention by external means, and interactive ... 详细信息

关键词： Distributed estimation cooperative filter soft control state-topology coevolution nonlinear consensus control

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Prediction of hard rock TBM penetration rate using least square support vector machine

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IFAC Proceedings Volumes 2013年第13期46卷 347-352页

作者： Yang Ge Jingcheng Wang Kang Li Department of Automation Shanghai Jiao Tong University Shanghai and Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai Jiao Tong University Shanghai 200240 China (Tel: 86-21-34205374 ) School of Electronics Electrical Engineering and Computer Science Queen's University Belfast UK

The prediction of tunnel boring machine (TBM) penetration rate is helpful to plan construction time and to control cost. This paper studies on modeling the penetration rate and the rock mass parameters via least square support vector machine (LS-SVM). These rock properties include uniaxial compressive strength (UCS), Brazilian tensile strength (BTS), peak slope index (PSI), distance between planes of weakness (DPW) and the alpha angle. The correlation between the rock parameters and the measured rate of penetration (ROP) is first investigated via LS-SVM. Then the necessity of normalizing the rock parameters is discussed. Finally, comparisons between the LS-SVM and other methods are presented to demonstrate the applicability of LS-SVM for predicting ROP.

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Realizability of n-port resistive networks with 2n terminals

Realizability of n-port resistive networks with 2n terminals

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Asian control Conference

作者： Michael Z. Q. Chen Chanying Li Kai Wang Zhiqiang Zuo Minghui Yin Guanrong Chen Department of Mechanical Engineering University of Hong Kong Hong Kong China School of Automation Nanjing University of Science and Technology Nanjing China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin China Department of Electronic Engineering City University of Hong Kong Hong Kong China

In this paper, we consider the realizability problem of n-port resistive networks containing 2n terminals. A necessary and sufficient condition for any real symmetric matrix to be realizable as the admittance of an n-port resistive network containing 2n terminals is obtained. The condition is based on the existence of a parameter matrix. We then focus on a three-port resistive network containing six terminals. A necessary and sufficient condition is derived for any real symmetric matrix to be realizable as the admittance of a three-port resistive network containing six terminals and at most five positive elements, whose topological structure is properly restricted.

关键词： Symmetric matrices Ports (Computers) Admittance Educational institutions Resistors Joining processes Passive networks

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On Variation of Infinite Horizon Performance of Model Predictive control with Varying Receding Horizon

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IFAC Proceedings Volumes 2013年第20期46卷 701-706页

作者： Xin Cai Shaoyuan Li Ning Li Kang Li Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Ministry of Education Shanghai 200240 P. R. China School of Electronics Electrical Engineering and Computer Science The Queen's University Belfast Belfast BT7 1NN UK

This paper investigates variation of infinite horizon (IH) performance of Model Predictive control (MPC) without constraints as the optimization horizon changes. By exploring properties of the Difference Riccati Equations (DRE), an upper bound and a lower bound of the ratio between variation of IH performance of MPC and finite horizon (FH) optimal cost are obtained. The result shows the dynamic behavior of IH performance of closed-loop MPC systems as the optimization horizon varies.

关键词： Model predictive control Infinite horizon performance Finite horizon optimal control Optimization horizon

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Hybrid brain/muscle-actuated control of an intelligent wheelchair

Hybrid brain/muscle-actuated control of an intelligent wheel...

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IEEE International Conference on Robotics and Biomimetics

作者： Zhijun Li Shuangshuang Lei Chun-Yi Su Guanglin Li Key Lab of Autonomous System and Network Control Ministry of Education and College of Automation Science and Engineering South China University of Technology Guangzhou China Department of Mechanical and Industrial Engineering Concordia University Montreal Canada Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen Guangdong China

Brain-computer interface (BCI) controlled wheelchair robots can serve as powerful aids for severely disabled people in their daily life, especially to help them move voluntarily. In order to better understand human “thought”, owing to the development of the hybrid brain/muscle interface technique, in this paper, we present a real-time hybrid brain/muscle interface to control a wheelchair directly to keep the disables recovering several motion capabilities by using noninvasive motor imagery Electroencephalography (EEG) and Electromyography (EMG). The EMG and EEG signals from the users are extracted to control the motion of an intelligent wheelchair. Both signals processing consists of off-line training, online control evaluation, and real-time control. An algorithm called the common spatial patterns (CSP) is used in this human-robot system to extract the most discriminative spatial patterns pairs as features. The extensive experiments were conducted on the developed human-wheelchair systems to verify the proposed approaches.

关键词： Wheelchairs Electroencephalography Electromyography Training Robots Muscles Real-time systems

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A homogeneous group bargaining algorithm in a smart grid

A homogeneous group bargaining algorithm in a smart grid

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2013 Workshop on Modeling and Simulation of Cyber-Physical Energy systems, MSCPES 2013

作者： Yu, Mengmeng Hong, Seung Ho Wei, Min Xu, Aidong Department of Electronic Systems Engineering Hanyang University Ansan-Si Korea Republic of Key Laboratory of Industrial Internet of Things Chongqing University of Posts and Telecommunications Chongqing China Industrial Control Network and Systems Laboratory Shenyang Institute of Automation Shenyang China

ISBN: (纸本)9781149913077

In this paper, we consider a smart grid incorporating numerous devices. In order to manage the energy distribution, we propose an algorithm that employs the group bargaining concept of game theory to efficiently allocate electricity resources among these devices. First, we divide the devices into non-overlapping groups, and allow devices to bargain both within and across groups. Second, we regard each group as homogeneous, so that the bargaining authority can be delegated to a representative device. Thus, the bargaining problem involves only the representatives, each of which bargains with other representatives on behalf of the group it belongs to. Third, we compare various bargaining results via a utility function that indicates the satisfaction level of a representative in terms of the bargaining result. Finally, the algorithm determines the optimal resource distribution pattern by maximizing the aggregated utilities of all representatives. Simulation results show that the proposed algorithm can reduce the complexity of energy distribution by distinguishing between inter- and intra-group bargaining processes, and can efficiently allocate resources to various devices according to their actual requirements. © 2013 IEEE.

关键词： Smart power grids

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Fabrication of Micro-OLEDs by Room-temperature Curing Nanocontact-print Lithography Using DLC Molds

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MRS Online Proceedings Library (OPL) 2013年第1期1511卷 mrsf12-1511-ee05-03-mrsf12-1511-ee05-03页

作者： Ippei Ishikawa Keisuke Sakurai Shuji Kiyohara Taisuke Okuno Hideto Tanoue Yoshiyuki Suda Hirofumi Takikawa Yoshio Taguchi Yoshinari Sugiyama Yukiko Omata Electric and Control System Engineering Course Faculty of Advanced Engineering Maizuru National College of Technology 234 Shiroya Maizuru Kyoto 625-8511 Japan Department of Electrical and Electronic Information Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tenpaku Toyohashi Aichi 441-8580 Japan Application and Technical Section ELIONIX INC. 3-7-6 Motoyokoyama Hachioji Tokyo 192-0063 Japan

The microfabrication technologiesfor organic light-emitting devices (OLEDs) are essential to the fabrication of the next generation of light-emitting devices. The micro-OLEDs fabricated by room-temperature curing nanoimprint lithography (RTC-NIL) using diamond molds have been investigated. However, light emissions from 10 μm-square-dot OLEDs fabricated by the RTC-NIL method have not been uniform. Therefore, we proposed the fabrication of micro-OLEDs by room-temperature curing nanocontact-print lithography (RTC-NCL) using the diamond-like carbon (DLC) mold. The DLC molds used in RTC-NCL were fabricated by an electron cyclotron resonance (ECR) oxygen ion shower with polysiloxane oxide mask in electron beam (EB) lithography technology. The mold patterns are square and rectangle dots which has 10 µm-width, 10 µm-width and50 µm-length, respectively. The height of the patterns is 500 nm. The DLC molds were used to form the insulating layer of polysiloxane in RTC-NCL. We carried out the RTC-NCL process using the DLC mold under the following optimum conditions: 0.1 MPa-pressure for coating DLC mold with polysiloxane film, 2.1 MPa-pressure for transferring polysiloxane from DLC mold pattern to indium tin oxide (ITO) glass substrate. We deposited N, N'-Diphenyl -N, N'-di (m-tolyl)benzidine (TPD) [40 nm-thickness] as hole transport layer / Tris(8-quinolinolato)aluminum (Alq3) [40 nm-thickness] as electron transport layer / Al [200 nm-thickness] as cathode on ITO glass substrateas anode in this order. We succeeded in formation of the insulating layer with square and rectangle dots which has 10 µm-width,10 µm-width and 50 µm-length, and operation of micro-OLEDs by RTC-NIL using DLC molds.

关键词： ion-beam processing microstructure diamond

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A vegetation height classification approach based on texture analysis of a single VHR image

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IOP Conference Series: Earth and Environmental Science 2014年第1期17卷

作者： Z I Petrou I Manakos T Stathaki C Tarantino M Adamo P Blonda Information Technologies Institute Centre for Research and Technology Hellas PO Box 60361 6th km Xarilaou - Thermi 57001 Thessaloniki Greece Department of Electrical and Electronic Engineering Imperial College London South Kensington Campus London SW7 2AZ UK Institute for Studies on Intelligent System for Automation (ISSIA) National Research Council (CNR) Via Amendola 122/D-O - 70126 Bari Italy

Vegetation height is a crucial feature in various applications related to ecological mapping, enhancing the discrimination among different land cover or habitat categories and facilitating a series of environmental tasks, ranging from biodiversity monitoring and assessment to landscape characterization, disaster management and conservation planning. Primary sources of information on vegetation height include in situ measurements and data from active satellite or airborne sensors, which, however, may often be non-affordable or unavailable for certain regions. Alternative approaches on extracting height information from very high resolution (VHR) satellite imagery based on texture analysis, have recently been presented, with promising results. Following the notion that multispectral image bands may often be highly correlated, data transformation and dimensionality reduction techniques are expected to reduce redundant information, and thus, the computational cost of the approaches, without significantly compromising their accuracy. In this paper, dimensionality reduction is performed on a VHR image and textural characteristics are calculated on its reconstructed approximations, to show that their discriminatory capabilities are maintained up to a large degree. Texture analysis is also performed on the projected data to investigate whether the different height categories can be distinguished in a similar way.

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A frequency limited model reduction technique for linear discrete systems

A frequency limited model reduction technique for linear dis...

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Australian control Conference (AUCC)

作者： Xin Du Ahmad Jazlan Victor Sreeram Roberto Togneri Abdul Ghafoor Shafishuhaza Sahlan School of Mechatronics Engineering and Automation Shanghai University Shanghai P. R. China Electronic and Computer Engineering University of Western Australia Western Australia WA Australia Department of Electrical Engineering National University of Sciences and Technology Rawalpindi Pakistan Control & Mechatronics Eng. Dept. (CMED) Universiti Teknologi Malaysia Skudai Johor Malaysia

This paper describes the model reduction framework for single-input single-output (SISO) discrete-time systems based on the preservation parameters such as Markov properties of the original system by applying a Frequency-Limited Impulse Response Gramian based Balanced Truncation method. This proposed method extends the Frequency-Limited Impulse Response Gramians model reduction method for continuous systems described in the recent paper in [20] to be applicable for discrete time systems. A numerical example is provided to compare the performances between various frequency limited model reduction methods at an arbitrarily selected frequency range within the passband of a digital filter. The stability of the reduced order models are also checked for each scenario.

关键词： Reduced order systems Observability controllability Matrix decomposition Time-frequency analysis Equations Mathematical model

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Multiple Anti-windup Loops under Multiple Activations:Dynamic Case to Enlarge Domain of Attraction

Multiple Anti-windup Loops under Multiple Activations:Dynami...

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第三十二届中国控制会议

作者： Xiongjun Wu Ziyang Meng The 802 Institute of Shanghai Academy of Space Flight Technology The Eighth Academy of China Aerospace Science and Technology Corporation Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China ACCESS Linnaeus Centre School of Electrical EngineeringRoyal Institute of Technology

ISBN: (纸本)9781479900305

A multiple anti-windup loops under multiple dynamic activations strategy is proposed to enlarge the domain of attraction. This work is parallel to the multiple activation case with static *** traditional anti-windup compensator is activated immediately as the saturation *** was shown recently that,by delaying the activation of the anti-windup mechanism to a certain level,the performance can be improved for the closed-loop *** was further shown that better performance can be obtained by activating an anti-windup mechanism in anticipation of actuator saturation,in comparison with the delayed activation *** paper considers the anti-windup design problem of enlarging domain of attraction under a dynamic multiple activation *** this multiple activation scheme,the anticipatory,delayed and immediate activation mechanism is incorporated in the same framework simultaneously.A furthermore significant performance improvements over both the immediate and delayed activation schemes can be *** proposed dynamic multiple activation scheme established a unified anti-windup framework and can be readily extended to the traditional immediate,delayed and anticipatory activation anti-windup mechanisms.

关键词： Anti-windup dynamic compensator domain of attraction multiple activations

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