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IEEE Symposium on Computational Intelligence in Vehicles and Transportation systems (CIVTS)

作者： Yunrui Bi Dipti Srinivasan Xiaobo Lu Zhe Sun Southeast University Nanjing Jiangsu CN Department of Electrical & Computer Engineering National University of Singapore Singapore School of Automation Southeast University Nanjing China National Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou China

Single intersection is generally regarded as the elementary unit for solving traffic problem. A Type-2 fuzzy logic controller (T2FLC) for single intersection signal control is presented in this paper as Type-2 fuzzy logic can handle the imprecision, uncertainties and vagueness lying in the dynamic process more efficiently. Furthermore, the membership function parameters of Type-2 fuzzy logic controller are optimized by genetic algorithm (GA). Simulation experiments are designed to compare the queue length and vehicular average delay of Type-2 fuzzy control optimized by GA with general Type-2 fuzzy control, Type-1 fuzzy control and fixed-time control under various types of vehicle arrival rate. Experimental results indicate that our proposed control method can reduce the queue length and vehicular delay at the intersection effectively and thus demonstrates its superiority.

关键词： Vehicles Fuzzy logic Genetic algorithms Delays Optimization Junctions Educational institutions

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Improved LQG benchmark for control performance assessment on ARMAX model process

Improved LQG benchmark for control performance assessment on...

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8th International Symposium on Advanced control of Chemical Processes, ADCHEM 2012

作者： Liu, Zhe Su, Hong-Ye Xie, Lei Gu, Yong State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 Zhejiang China

ISBN: (纸本)9783902823052

control performance assessment for MPC systems has attracted a lot of interest in recent years. Compared with the typical MVC benchmark, the LQG benchmark gives a pragmatic assessment result. Based on the traditional LQG benchmark, the equigrid approach can improve the regression performance. In addition to the numerical algorithm, the recursive algorithm and the analytical algorithm were introduced to analyze the essential relationship in the LQG benchmark, which can save the computing cost and improve the regression effect. Based on the ARMAX model, the detailed procedures for these algorithms were discussed. In the simulation to a SISO process and a MIMO process, the different types of LQG benchmarks were calculated. © 2012 IFAC.

关键词： Benchmarking

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Mechanical Design of the Legs of Hydraulically Actuated Quadruped Bionic Robot

Mechanical Design of the Legs of Hydraulically Actuated Quad...

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2013 ICME International Conference on Complex Medical Engineering(2013 ICME复合医学工程国际会议)

作者： Xin Li Wentao Sun Junyao Gao Xingguang Duan Qiang Huang Hui Li Huaxin Liu Wenxue Zhao Zhe Xu Yi Liu Intelligent Robotics Institute State Key Laboratory of Biomimetic Robots and Systems Ministry of Education Key Laboratory of Intelligent control and decision of complex systems School of Mechatronical Engineering Beijing Institute of Technology Nandajie Zhongguancun Haidian Beijing 100081 China

ISBN: (纸本)9781467329705

This paper discusses the design of the mechanical structure of a quadruped robot and a three-dimensional simulation model is built under Adams simulating the mechanism's motion to capture the dynamic characteristics of the quadruped *** paper analyses the effect of the length of legs on the walking structure from different aspects: its movement speed,capability of climbing obstacles and the workspace of its foot *** addition,to achieve the optimization target of balancing the output force of each hydraulic cylinder,the paper establishes a mathematical model under required constraints working out the lever members that accommodated with the *** all these factors,the most satisfied structural parameters of the autonomous quadruped robot are selected.

关键词： hydraulic quadruped robot the output force of the hydraulic cylinder structural parameters

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Photoinduced and microbial generation of hydrogen peroxide and organic peroxides in natural waters

Environmental Science and Engineering

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Environmental Science and Engineering 2013年第9783642322228期 139-207页

作者： Mostofa, Khan M.G. Liu, Cong-qiang Sakugawa, Hiroshi Vione, Davide Minakata, Daisuke Wu, Fengchang State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang550002 China Department of Environmental Dynamics and Management Graduate School of Biosphere Science Hiroshima University 1-7-1 Kagamiyama Higashi-Hiroshima739-8521 Japan Dipartimento Chim Analit University Turin TurinI-10125 Italy Centro Interdipartimentale NatRisk GrugliascoTOI-10095 Italy School of Civil and Environmental Engineering Brook Byers Institute for Sustainable Systems Georgia Institute of Technology 828 West Peachtree Street Suite 320 AtlantaGA30332 United States State Environmental Protection Key Laboratory of Lake Pollution Control Chinese Research Academy of Environmental Sciences Chaoyang100012 China

The concentration of hydrogen peroxide (H2O2) in natural waters has been determined for the first time in 1925 by Harvey (Harvey 1925), who studied inshore and offshore water from the English Channel. © 2013, Spr... 详细信息

ISBN: (纸本)9783642361425

关键词： Hydrogen peroxide

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High temperature proton exchange membrane fuel cell hybrid power system monitoring platform designing

High temperature proton exchange membrane fuel cell hybrid p...

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International Conference on Automatic control and Artificial Intelligence, ACAI 2012

作者： Su, Hongye Zhang, Bo Cao, Zhixing Li, Xiuliang Chen, Xuelan State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou Zhejiang Province 310027 China

ISBN: (纸本)9781849195379

The design of 5kw high temperature proton exchange membrane fuel cell (HTPEMFC) hybrid power system monitoring platform is presented in this paper. The purpose of the system is to overcome the problems of low temperature proton exchange membrane fuel cell (LTPEMFC), such as poor water management and requirement of high-purity hydrogen. The present computerized real-time monitoring system is based on NI's PXIe hardware system and Labview software. The platform has two working modes - test mode and simulation mode. In the test mode, it provides the conditions for studying the problems of fuel cell hybrid power system, such as system performance, modelling and optimization, by completely monitoring all the working parameters in real-time. And in the simulation mode, besides the problems mentioned above, those with feeding control under changing loads, stability of output power and optimization of energy efficiency, can also be studied with multi-energy management system.

关键词： Monitoring

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Multiple model predictive control for oxygen starvation prevention of fuel cell system

Multiple model predictive control for oxygen starvation prev...

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International Conference on Automatic control and Artificial Intelligence, ACAI 2012

作者： Chen, Xuelan Li, Xiuliang Su, Hongye Cao, Zhixing Zhang, Bo State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou Zhejiang Province 310027 China

ISBN: (纸本)9781849195379

The purpose of this work is to prevent oxygen starvation of fuel cell system with the compressor surge and choke constraints considered. It has been already known that the compressor inertia causes the oxygen excess ratio to drop rapidly when the current drawn out of the fuel cell steps up dramatically. Thus we introduce a load actuator model to extract the load current out of the fuel cell as a performance variable. Then we are able to regulate the input of load actuator not only to smooth the transitions of load current to prevent the oxygen starvation, but also to track the desired current of fuel cell. Moreover, air supply system of fuel cell has strong nonlinear behaviors while working in a wide range. Thus a multiple multivariable model predictive controller has been introduced based on linearized models obtained from the fuel cell's nonlinear model linearized at operation points. The simulation results have demonstrated that the proposed control strategy is effective when applied to the fuel cell's nonlinear system.

关键词： Model predictive control

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Trot Pattern Generation for Quadruped Robot Based on the ZMP Stability Margin

Trot Pattern Generation for Quadruped Robot Based on the ZMP...

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2013 ICME International Conference on Complex Medical Engineering(2013 ICME复合医学工程国际会议)

作者： Si Zhang Yi Liu Zhe Xu Junyao Gao Xingguang Duan Hui Li Zhangguo Yu Xuechao Chen Jing Li Huaxin Liu Xin LI Intelligent Robotics Institute Key Laboratory of Biomimetic Robots and Systems Ministry of Education State Key Laboratory of Intelligent Control and Decision of Complex Systems School of Mechatronical Engineering Beijing Institute of Technology 5 Nandajie Zhongguancun Haidian Beijing 100081 China

ISBN: (纸本)9781467329705

Quadruped robot is expected to serve in complex conditions such as mountain road,grassland,etc.,therefore we desire a walking pattern generation that can guarantee both the speed and the stability of the quadruped *** order to solve this problem,this paper focuses on the stability for the tort pattern and proposes trot pattern generation for quadruped robot on the basis of ZMP stability *** foot trajectory is first designed based on the work space *** the ZMP and stability margin is computed to achieve the optimal trajectory of the midpoint of the hip joint of the *** angles of each joint are finally obtained through the inverse kinematics ***,the effectiveness of the proposed method is demonstrated by the results from the simulation and the experiment on the quadruped robot in BIT.

关键词： Quadruped robot ZMP stability margin Trot pattern

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Stability analysis for discrete linear systems with state saturation by a saturation-dependent Lyapunov functional

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控制理论与应用（英文版） 2012年第4期10卷 539-542页

作者： Xiaofu JI Mingwei REN Hongye SU Jinfeng GAO School of Electrical and Information Engineering Jiangsu University National Key Laboratory of Industrial Control Technology Institute of Cyber-systems and ControlZhejiang University Institute of Automation Zhejiang Sci-Tech University

This paper concerns the stability analysis problem of discrete linear systems with state saturation using a saturation-dependent Lyapunov functional. We introduce a free matrix characterized by the sum of the absolute value of each elements for each row less than 1, which makes the state with saturation constraint reside in a convex polyhedron. A saturation-dependent Lyapunov functional is then designed to obtain a sufficient condition for such systems to be globally asymptotically stable. Based on this stability criterion, the state feedback control law synthesis problem is also studied. The obtained results are formulated in terms of bilinear matrix inequalities that can be solved by the presented iterative linear matrix ineoualitv algorithm. Two numerical examoles are used to demonstrate the effectiveness of the nronosed method_

关键词： Discrete linear systems state saturation Saturation-dependent Iterative linear matrix inequality

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Direct Localization of Multiple Sources in Sensor Array Networks: A Joint Sparse Representation of Array Covariance Matrices Approach

Direct Localization of Multiple Sources in Sensor Array Netw...

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IEEE Internatonal Conference on Mobile Adhoc and Sensor systems (MASS)

作者： Ji-An Luo Zhi Wang Yu-Hen Hu Hangzhou Dianzi University Institute of Information and Control China Zhejiang University The State Key Laboratory of Industrial Control Technology China Dept. Electrical and Computer Engineering University of Wisconsin-Madison WI U. S. A

A novel sparse representation based multi-source localization method is presented in this work. We envision a wireless network infrastructure containing multiple phase arrays of acoustic sensors. With multiple arrays, direct estimation of a set of source locations is achieved using a new joint sparse representation of array covariance matrices (JSRACM). This representation transforms the source location estimation problem into a spatial sparse signal representation (SSSR) optimization problem. To mitigate the high computation complexity of JSRACM, a novel binary sparse indicative vector (SIV) is introduced to represent the support of joint SSSR of array covariance matrices. As such, the multiple source locations may be estimated by solving an unconstrained optimization problem of the SIV vector using existing FOCUSS-like algorithms. The resulting SIVR-JSRACM algorithm does not require prior information of the number of sources nor initial source location estimates. It promises super-resolution, robustness to noise, and low computing complexity which is independent of the number of sensor phase arrays. Simulation results demonstrate superior performance of the proposed algorithm.

关键词： Arrays Vectors Covariance matrices Noise Signal processing algorithms Joints Dictionaries

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University in the innovation system academia-industry collaborations and intellectual property rights

University in the innovation system academia-industry collab...

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

作者： Helena Jin Gang Xiong Department of Industrial Engineering and Management School of Science Aalto University Espoo Finland The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

In a world where possessing raw materials or manufacturing commodities are not sufficient for long-term economic success, innovativeness and a knowledge-based economy form the basis for prosperity. In this report, we discuss the link between a nation's higher education system and its ability to bring about and foster innovativeness and economic growth. In particular, we will concentrate on the roles that universities play in the national innovation system. Some of the questions we address include: How strong a link is there between the education system and nation's innovativeness? How important is industry-academia collaboration? From the perspective of a knowledge-based economy, what would an ideal university be like? To answer these questions, we summarize key findings from the literature. The aim of this report is to present the key factors and decisions that should be considered in future higher education strategies.

关键词： Educational institutions Intellectual property Collaboration Technological innovation Industries Companies Economics

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