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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 TechnologyStockholm 10044Sweden

ISBN: (纸本)9781479900305

Anti-windup design is an intuitive and efficient way to deal with input saturation *** the classic antiwindup design,the compensator is set to be activated immediately as the control signal saturates the *** important innovation in the anti-windup activation mechanism is to delay the activation of the anti-windup mechanism until the saturation reaches to a certain severity which led to a performance improvement of the resulting closed-loop *** recently,it was shown that by activating a static anti-windup mechanism in anticipation of actuator saturation,significant further performance improvements can be achieved in comparison with the delayed activation *** addition,we have combined both the delayed and anticipatory activation mechanisms,to develop the multiple activation strategy,in terms of(?) gain *** paper furthermore considers the problem of enlarging domain of attraction and demonstrates that the multiple activation of a static multiple feedback anti-windup mechanism would also lead to significant performance improvements over both the immediate and delayed activation schemes.

关键词： Actuator saturation anti-windup anticipatory activation domain of attraction multiple activation

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Data fusion for target tracking in wireless sensor networks using quantized innovations and Kalman filtering

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Science China(Information Sciences) 2012年第3期55卷 530-544页

作者： XU Jian1,2 , LI JianXun1,2 & XU Sheng3 1department of automation, Science and Technology on Avionics Integration Laboratory, Shanghai Jiao Tong University, Shanghai 200240, China 2department of automation, system control and Information Processing, Ministry of Education of China, Shanghai Jiao Tong University, Shanghai 200240, China 3School of Mechanical engineering, Shanghai Jiao Tong University, Shanghai 200240, China 1. Department of Automation Science and Technology on Avionics Integration Laboratory Shanghai Jiao Tong University Shanghai 200240 China2. Department of Automation System Control and Information Processing Ministry of Education of China Shanghai Jiao Tong University Shanghai 200240 China3. School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China

A novel networked data-fusion method is developed for the target tracking in wireless sensor networks (WSNs). Specifically, this paper investigates data fusion scheme under the communication constraint between the fusion center and each sensor. Such a message constraint is motivated by the bandwidth limitation of the communication links, fusion center, and by the limited power budget of local sensors. In the proposed scheme, each sensor collects one noise-corrupted sample, performs a quantizing operation, and transmits quantized message to the fusion center. Then the fusion center combines the received quantized messages to produce a final estimate. The novel data-fusion method is based on the quantized measurement innovations and decentralized Kalman filtering (DKF) with feedback. For the proposed algorithm, the performance analysis of the estimation precision is provided. Finally, Monte Carlo simulations show the effectiveness of the proposed scheme.

关键词： data fusion target tracking limited bandwidth quantized innovation Kalman filtering

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A study on ARMA model based corporate equipment maintenance expenditure prediction

A study on ARMA model based corporate equipment maintenance ...

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2012 IEEE International Conference on Service Operations and Logistics, and Informatics, SOLI 2012

作者： Lv, Minhui Zhao, Hongxia Shchool of Management Department of Equipment Economics and Management Naval University of Engineering Wuhan China State Key Laboratory of Management and Control for Complex System Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781467324007

This paper focuses on macro prediction of corporate equipment maintenance expenditure, adopts ARMA to establish the model for historical data of corporate equipment maintenance expenditure and makes demand analysis and prediction so as to provide a scientific basis for decision makers in equipment maintenance expenditure prediction, and they can control the overall budget for equipment maintenance. Based on analysis and compassion of actual model calculation results, the paper reaches the conclusion that ARMA model enjoys an advantage over traditional predicting models in corporate equipment maintenance prediction. © 2012 IEEE.

关键词： Forecasting

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A web service hierarchy algorithm based on QOS similarity

A web service hierarchy algorithm based on QOS similarity

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International Conference on Industrial control and Electronics engineering (ICICEE)

作者： Wen Zepeng Ma Lin Wang Lei Zhao Shanshan Department of automation USTC Key laboratory of network communication system and control Anhui Department of Electronic Engineering & Information Science USTC Key laboratory of network communication system and control Anhui

ISBN: (纸本)9780769547923

With the development of SOA based on web services, there are more and more web services with same interface and similar function. How to find and choose the best web service is an important problem that all SOA enterprises face. QoS is used to describe the quality criteria of a web service. In this paper, a new algorithm of web service hierarchy base on QoS similarity has been proposed, which is concerned with meeting requirements of service consumers and the satisfaction with load requirement.

关键词： SOA Web service QoS Hierarchy algorithm

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The extended co-learning framework for robust object tracking

The extended co-learning framework for robust object trackin...

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2012 13th IEEE International Conference on Multimedia and Expo, ICME 2012

作者： Gong, Chen Liu, Yang Li, Tianyu Yang, Jie He, Xiangjian Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Shanghai China Faculty of Engineering and Information Technology University of Technology Sydney PO Box 123 Sydney NSW Australia

ISBN: (纸本)9781467316590

Recently, object tracking has been widely studied as a binary classification problem. Semi-supervised learning is particularly suitable for improving classification accuracy when large quantities of unlabeled samples are generated (just like tracking procedure). The purpose of this paper is to fulfill robust and stable tracking by using collaborative learning, which belongs to the scope of semi-supervised learning, among three classifiers. Different from [1], random fern classifier is incorporated to deal with 2bitBP feature newly added and certain constraints are specially implemented in our framework. Besides, the way for selecting positive samples is also altered by us in order to achieve more stable tracking. Algorithm proposed in this paper is validated by tracking pedestrian and cup under occlusion. Experiments and comparison show that our algorithm can avoid drifting problem to some degree and make tracking result more robust and adaptive. © 2012 IEEE.

关键词： Supervised learning

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Intervention of flocking behavior based on collision avoidance

Intervention of flocking behavior based on collision avoidan...

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The 24th Chinese control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)

作者： Yang Zhou Lin Wang Qi Chen Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Inf Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Inf Department of Civil Engineering Shanghai Jiao Tong University Shanghai 200240 China

This paper focuses on intervention of collective behavior of multi-agent systems. Distinct from the classical leader-follower method that guides group based on the inclination of convergence, here by virtue of collision avoidance in flocking behavior, we intervene in collective behavior by adding some obstacles and designing their moving strategies. A model which can be treat as a shepherding process is developed, where the sheep moves according to Boid model, and the shepherd aims to drive all sheep to a desired place. Two strategies with both global and only local information are designed for the shepherd to fulfill the intervention task. Based on Netlogo, we vividly show the shepherding process and prove the efficiency of the obstacle-avoidance method.

关键词： Intervention Multi-agent systems Collision Avoidance Shepherd

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Voltage quality improvement in islanded microgrids supplying nonlinear loads

Voltage quality improvement in islanded microgrids supplying...

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2012 3rd Power Electronics, Drive systems and Technologies Conference, PEDSTC 2012

作者： Dehghani, Mohammad T. Vahedi, Abolfazl Savaghebi, Mehdi Guerrero, Josep M. Department of Power Engineering Saveh Branch Islamic Azad University Saveh Iran Center of Excellence for Power System Automation and Operation Iran University of Science and Technology Iran Department of Electronics Engineering Karaj Branch Islamic Azad University Karaj Iran Department of Automatic Control and Industrial Informatics Technical University of Catalonia Spain Institute of Energy Technology Aalborg University Denmark

ISBN: (纸本)9781467301114

The aim of this paper is to improve voltage quality at the terminals of distributed generators (DGs) in an islanded microgrid. To achieve this goal, it is proposed to include separate voltage and current control loops for the fundamental and harmonics frequencies. This way, it is not necessary to consider additional controllers to provide voltage harmonic compensation. The proposed control system can be implemented in a very simple way. The control structure of every single DG unit consists of active and reactive power droop controllers and voltage and current control loops. Simulation results are provided in order to show the effectiveness of the proposed control approach. © 2012 IEEE.

关键词： Harmonic analysis

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Effects of SiO2 particles on surface charge of epoxy nanocomposites

Effects of SiO2 particles on surface charge of epoxy nanocom...

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International Conference on High Voltage engineering and Application, ICHVE

作者： B. X. Du Li Wang J. W. Zhang Yong Liu Y Gao Key Laboratory of Power System Simulation and Control of Ministry of Education Department of Electrical Engineering School of Electrical Engineering and Automation Tianjin University TJU Tianjin China

Epoxy used as insulating material in electronic and electrical devices plays an important role in system reliability. Addition of nanoparticles into epoxy can improve the insulating properties compared with undoped material. However, due to the change of the material structure, trap characteristics and charge behaviors are altered as a consequence. This possibly leads to a great risk of electric field distortion and discharge that degrades the insulation. From the viewpoint of safety, it is necessary to investigate the charge behavior on epoxy nanocomposites. This paper presents study aimed at clarifying the effect of nano-filler content on surface charge accumulation and decay behaviors of epoxy nanocomposites with SiO 2 particles. Samples were prepared by dispersing nano-scale SiO 2 into epoxy by mixing with shear force. Corona charging tests were performed at room temperature with a relative humidity of ~ 40%. The charge distribution was measured by means of an electrostatic voltmeter. Obtained results show the dependence of the accumulated charge as well as the charge decay rate upon the concentration of SiO 2 , varying as a function of the charge polarity, charging time and charging voltage. It is suggested that the charge dynamics is dependent upon the characteristics of localized surface states that are altered by the nanoparticles.

关键词： Surface charging Nanocomposites Nanoparticles Electrodes Dielectrics Corona Space charge

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Fairness-guaranteed pricing and power allocation with a friendly jammer against eavesdropping

Fairness-guaranteed pricing and power allocation with a frie...

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International Conference on Wireless Communications and Signal Processing (WCSP)

作者： Jianting Yue Bo Yang Xinping Guan Department of Electronic Engineering Key Laboratory of System Control and Information Processing Ministry of Education Shanghai Jiaotong University Shanghai China Department of Automation Key Laboratory of System Control and Information Processing Ministry of Education Shanghai Jiaotong University Shanghai China

In wireless communication, jamming is a promising solution to provide improvement in secrecy rate, especially when security requirement is difficult to satisfy in realistic environment. Users could pay the friendly jammer for some interference to the eavesdropper and consequently improve the secrecy rate of their own, while the jammer wants to get maximum revenue within its capability. Thereby a Stackelberg game is introduced. Fairness also deserves particular attention, as unfair allocation of the limited resource deteriorates the performance of whole network. In this paper, we discuss a network with one jammer and several users, where they participate in the game and reach equilibrium ultimately. We utilize Kalai-Smorodinsky bargaining solution to guarantee fairness among users, making them balance their utility so as to make the best of the interference from the jammer. Moreover, we propose implementation of algorithm and demonstrate the performance.

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Distributed Cooperative Tracking for Multiple Second-order Nonlinear systems Using Only Relative Position Measurements

Distributed Cooperative Tracking for Multiple Second-order N...

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The 24th Chinese control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)

作者： Ziyang Meng Zongli Lin Department of Automation Shanghai Jiao Tong University and KeyLaboratory of System Control and Inf Charles L. Brown Department of Electrical and Computer Engineering University of Virginia Charlott

In this paper, a distributed cooperative tracking problem is studied for a group of second-order nonlinear systems. The control goal is to drive the states of the followers to converge to those of a time-varying leader using only relative information. We focus on the case of the output feedback, where the velocities of the followers and the leader are not available. Two kinds of distributed observers are proposed for the cases when the follower dynamics are uniformly globally exponentially stable and the follower dynamics are continuously differentiable, respectively. Using the observer outputs, we design the control inputs such that the distributed cooperative tracking problem of multiple second-order nonlinear systems is solved under the constraint that only relative position measurements are available. Simulations are given to validate the theoretical results.

关键词： networked second-order nonlinear systems output feedback continuously differentiable

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