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International Conference on Intelligent Transportation

作者： Shu Lin Taiyu Ling Yugeng Xi School of Computer and Control Engineering University of Chinese Academy of Sciences Beijing China Department of Automation Key Laboratory of System Control and Information Processing Shanghai China

ISBN: (纸本)9781479929153

The control and management problem for large-scale complex urban traffic network is not yet successfully addressed. There are still many difficulties in controlling such large systems, e.g. complexity, high dimension, multiple control objectives, and uncertainties. In the paper, a multi-level MPC hierarchy is proposed to address these difficulties for the control of large-scale urban traffic networks. Under the control hierarchy, a multi-level MPC algorithm is proposed, which includes three levels, the demand balance MPC, the subnetwork MPC, and the intersection controller from top to bottom. A case study is carried out to evaluate the proposed algorithm. The simulation results illustrate the effectiveness of the multi-level controller.

关键词： Vehicles Optimization Roads Mathematical model Algorithm design and analysis Timing Analytical models

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分数阶奇异系统容许性的充分必要条件(英文)

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自动化学报 2013年第12期39卷 2160-2164页

作者：余瑶焦壮孙长银 School of Automation & Electrical Engineering University of Science and Technology Beijing Key Laboratory of Advanced Control of Iron and Steel Process Ministry of Education Beijing Institute of Electronic System Engineering

This paper focuses on the admissibility condition for fractional-order singular system with order α∈(0, 1). The definitions of regularity, impulse-free and admissibility are given first, then a sufcient and necessary condition of admissibility for fractional-order singular system is established. A numerical example is included to illustrate the proposed condition.

关键词： Fractional-order singular systems regularity impulse-free admissibility

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On variation of infinite horizon performance of model predictive control with varying receding horizon

On variation of infinite horizon performance of model predic...

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3rd IFAC Conference on Intelligent control and automation Science, ICONS 2013

作者： Cai, Xin Li, Shaoyuan Li, Ning Li, Kang Department of Automation Key Laboratory of System Control and Information Processing Shanghai Jiao Tong University Shanghai 200240 China School of Electronics Electrical Engineering and Computer Science Queen's University Belfast Belfast BT7 1NN United Kingdom

ISBN: (纸本)9783902823458

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. Copyright © 2013 IFAC.

关键词： Model predictive control

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Boundary Feedback Stabilization and control of Star-shaped Open Canals

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IFAC Proceedings Volumes 2013年第13期46卷 100-104页

作者： Lihui Cen Yugeng Xi Dewei Li Department of Control Engineering Central South University Changsha China Key Laboratory of System Control and Information Processing Ministry of Education Shanghai China Department of Automation Shanghai Jiaotong University Shanghai China

This paper considers the boundary control of a star-shaped open-channel network modeled by the Saint-Venant equations. We present the boundary feedback stabilization of the Saint-Venant equations by means of a Riemann invariants method. The estimation of the parameters satisfying the stability condition is deduced. The boundary feedback control is developed to guarantee that the solution of the control system decays exponentially, only by taking the water levels at the gate boundaries as the feedback.

关键词： Canal stabilization boundary feedback control Riemann invariants

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Identifying peer influence in online social networks using transfer entropy

Identifying peer influence in online social networks using t...

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Pacific Asia Workshop on Intelligence and Security Informatics, PAISI 2013

作者： He, Saike Zheng, Xiaolong Zeng, Daniel Cui, Kainan Zhang, Zhu Luo, Chuan State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China Department of Management Information System University of Arizona Tucson AZ 85719 United States School of Electronic and Information Engineering Xi'an Jiaotong University Xi'an China

ISBN: (纸本)9783642396922

The past few years have witnessed the rapid growth of online social networks, which have become important hubs of social activity and conduits of information. Identifying social influence in these newly emerging platforms can provide us with significant insights to better understand the interaction behaviors among online users. However, it is difficult for us to measure the influence quantitatively among user peers, since many key factors such as homophily and heterogeneity, can not be observed in our real world conveniently. More recent work mainly focuses on developing theoretical models based on explicit causal knowledge. Nevertheless, such knowledge is usually not available and often needs to be discovered. In this paper, we introduce a model free approach to formulate causal inferences of behaviors among user peers. Experimental results show that influence measured by our approach could successfully reconstruct the underlying networks structure. Furthermore, two additional case studies based on this approach reveal that influentials wield power through specific venues, which constitute a comparatively small portion of the whole channels. © 2013 Springer-Verlag.

关键词： Social networking (online)

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A Data-Driven Approach for Fault Diagnosis in Gearbox of Wind Energy Conversion system

A Data-Driven Approach for Fault Diagnosis in Gearbox of Win...

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Conference on control and Fault-Tolerant systems

作者： Minjia Kruger Steven X. Ding Adel Haghani Peter Engel Torsten Jeinsch Institute for Automatic Control and Complex System Faculty of Engineering University Duisburg-Essen PC-Soft GmbH Institute of Automation University Rostock

ISBN: (纸本)9781479928569

With a fast growing of wind power installed capacity, an efficient monitoring system for wind energy conversion system (WEC) is required to ensure operational reliability, high availability of energy production and at the same time reduce operating and maintenance costs. In this paper, an efficient, scaleable data-driven on-line WEC monitoring method is introduced, which consists of three parts: 1) off-line training process 2) on-line monitoring phase 3) on-line diagnosis phase. The performance and effectiveness of this method for the detection of process abnormalities are demonstrated using the data obtained from different wind turbines in a wind farm.

关键词： Wind energy conversion system Fault diagnosis Data-driven

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Study on Trajectory Planning for Space Simulator Based on Minimum Acceleration Limitation

Study on Trajectory Planning for Space Simulator Based on Mi...

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2013 International Conference on Materials,Mechatronics and automation(ICMMA 2013)

作者： Zhenzhen Bian Hongbo Li Yun He Zhigang Xu Fengsheng Li Shenyang Institute of Automation Chinese Academy of Sciences University of Chinese Academy of Sciences Aerospace System Engineering Shanghai School of Control Science and Engineering Shandong University

Trajectory planning and simulation of docking tests on the ground for space simulator is one of key technologies to complete space docking mission.A new time-optimal trajectory planning algorithm is proposed based on minimum acceleration *** is realized by searching maximum acceleration to obtain the best time according to PSO(particle swarm optimization).Through calling matlab script by Lab View and capturing control set points,3D CAD model is driven to verify the rationality of the trajectory planning algorithm and model *** simulation results show that the simulator using the proposed algorithm can move smoothly and reliably meeting the experiment requirements.

关键词： Trajectory planning Optimal execution time Space Simulator Virtual prototype

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What is the uniqueness of growth pattern in human flesh search organization?

What is the uniqueness of growth pattern in human flesh sear...

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Pacific Asia Workshop on Intelligence and Security Informatics, PAISI 2013

作者： Wang, Tao Zhang, Qingpeng Fu, Julei Wang, Xiao Zheng, Suncong College of Information System and Management National University of Defense Technology Changsha 410073 China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China Department of Systems and Industrial Engineering University of Arizona Tucson AZ United States

ISBN: (纸本)9783642396922

Human Flesh Search is an explosive Web phenomenon these years in China, especially when new media, such as Weibo, appeared. In this research, we present the empirical studies about growing patterns of participated Human Flesh Search user, and unveiled one unique growing property. Based on the empirical findings, we compare it with two others results, one is the common Weibo's growth pattern, and the other is the popularity growth pattern of photo in Flickr. Some differences are proposed and analyzed briefly. © 2013 Springer-Verlag.

关键词： Social networking (online)

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Autonomous hovering control for a quadrotor unmanned aerial vehicle

Autonomous hovering control for a quadrotor unmanned aerial ...

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Chinese control Conference (CCC)

作者： Fu Wang Bin Xian Guoping Huang Bo Zhao The Institute of Robotics and Autonomous System the Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University 300072 China

In this paper, an autopilot system for the quadrotor unmanned aerial vehicle (UAV) is developed by utilizing a digital signal processor (DSP) as the on-board micro-control unit (MCU). The hardware setup and the software are also developed for the autonomous flight control of the UAV. The main design procedure includes the controller board design, brushless DC motor driver design, sensor data processing software design, and flight control algorithm design. The control algorithm is developed based on the inner loop and outer loop control method. Proportional Derivative (PD) controllers are proposed for the attitude dynamics (inner loop) and position dynamics (outer loop) respectively. Autonomous hovering control is achieved via the control of roll angle, pitch angle, yaw angle and altitude of the UAV. Experiments results are included to demonstrate the hovering control performance.

关键词： Digital signal processing Pulse width modulation Electronic mail Unmanned aerial vehicles Educational institutions Digital signal processors Heuristic algorithms

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Development of a three degree-of-freedom testbed for an unmanned helicopter and attitude control design

Development of a three degree-of-freedom testbed for an unma...

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Chinese control Conference (CCC)

作者： Jianchuan Guo Bin Xian Fu Wang Xu Zhang The Institute of Robotics and Autonomous System Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University 300072 China

To provide a safe and efficient test for the autonomous control design of the unmanned helicopter, a 3 degree-of-freedom (DOF) helicopter testbed is developed in this paper. The testbed uses a small electric hobby helicopter as the main body, a digital signal processsor (DSP) is employed as the on-board micro control unit (MCU) for the attitude control of the helicopter, a micro attitude and heading reference system (AHRS) is utilized as the main on-board sensor for attitude states feedback and a Bluetooth module is mounted on the testbed to provide realtime wireless communication between the helicopter and the ground control station (GCS). This paper investigates the servo actuators coordinated control method with separate channel of the new-style electric helicopter, which is named as electronic collective-cyclic pitch mixing (ECCPM). A modified digital incremental PID control algorithm which is free of servo actuators saturation issue is proposed for the attitude control of the helicopter. Finally, experiment results are provided to verify the testbed and control design.

关键词： Helicopters Digital signal processing Attitude control Electronic mail Process control Educational institutions control design

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