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A novel macroscopic traffic model based on generalized optimal velocity model

Chinese Physics B 2011年第1期20卷 419-425页

作者：周玄昊吕勇哉 State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang University

In this paper, we adopt the coarse graining method proposed by Lee H K et al. to develop a macroscopic model from the microscopic traffic model-GOVM. The proposed model inherits the parameter p which considers the influence of next-nearest car introduced in the GOVM model. The simulation results show that the new model is strictly consistent with the former microscopic model. Using this macroscopic model, we can avoid considering the details of each traffic on the road, and build more complex models such as road network model easily in the future.

关键词： macroscopic model microscopic model traffic flow

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Map building for dynamic environments using grid vectors

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第7期12卷 574-588页

作者： Wen-fei WANG,Rong XIONG ,Jian CHU (state key laboratory of industrial control technology,Institute of cyber-systems and control,Zhejiang University,Hangzhou 310027,China) State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University

This paper addresses the problem of creating a geometric map with a mobile robot in a dynamic indoor *** form an accurate model of the environment,we present a novel map representation called the 'grid vector',which combines each vector that represents a directed line segment with a slender occupancy grid map.A modified expectation maximization (EM) based approach is proposed to evaluate the dynamic objects and simultaneously estimate the robot path and the map of the *** probability of each grid vector is evaluated in the expectation step and then used to distinguish the vector into static and dynamic *** robot path and map are estimated in the maximization step with a graph-based simultaneous localization and mapping (SLAM) *** representation we introduce provides advantages on making the SLAM method strictly statistic,reducing memory cost,identifying the dynamic objects,and improving the accuracy of the data *** SLAM algorithm we present is efficient in computation and *** on three different kinds of data sets show that our representation and algorithm can generate an accurate static map in a dynamic indoor environment.

关键词： Grid vector Line Segments Dynamic Simultaneous localization and mapping (SLAM) Expectation maximization (EM)

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ACP based 3D emergency drills system for petrochemical plants

ACP based 3D emergency drills system for petrochemical plant...

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10th World Congress on Intelligent control and Automation, WCICA 2012

作者： Jing, Sifeng Cheng, Changjian Xiong, Gang Liu, Xiwei Shang, Xiuqin Wang, Weixing State Key Laboratory of Management and Control for Complex Systems Beijing Engineering Research Center of Intelligent Systems and Technology Institute of Automation Chinese Academy of Sciences Beijing 100190 China Dongguan Research Institute of CASIA Cloud Computing Industrial Technology Innovation and Incubation Center Chinese Academy of Sciences Songshan-Lake 523808 China

ISBN: (纸本)9781467313988

To further enhance emergency management skills of an organisation's emergency response personnel, emergency response training,especially 3D emergency drill, is currently becoming more and more important in the petrochemical sector. So, a novel 3D emergency drills system is designed and developed based on ACP approach, which can be used for mocking emergency response plan drills and evaluating the plan. A case study reveals that the performance of the system is good and the system can meet the needs of emergency response training and optimizing emergency response plan in petrochemical plants. © 2012 IEEE.

关键词： Personnel training

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Market-driven profit optimization for tabular chemical reactors with genetic algorithms

Market-driven profit optimization for tabular chemical react...

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IEEE Symposium on Robotics and Applications (ISRA)

作者： Hai-Peng Qin Peng Chen Yong-Zai Lu Zhao-Li Wu Jian Chu State Key Laboratory of Industrial Control Technology & Institute of Cyber-Systems and Control Zhejiang University Hangzhou China Department of Automation Shanghai Jiaotong University Shanghai China Department of Chemical and Biological Engineering Zhejiang University Hangzhou China

With the uncertainty in the prices of feedstock, energy and finished products, the profit optimization plays a critical role in making a chemical production enterprise more dynamic and flexible to adapt the changes in global marketplace. This paper presents the development of profit optimization solution with an integration of profit model and model-based genetic algorithm (GA) optimization, and its industrial case study on an ethanolamine (EA) production line. The proposed methodology and solution may also be applied to other chemical manufacturing enterprises.

关键词： Robots

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Modified extremal optimization for the hard maximum satisfiability problem

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第7期12卷 589-596页

作者： Guo-qiang ZENG 1,Yong-zai LU 2,Wei-Jie MAO 2 (1 College of Physics & Electronic Information Engineering,Wenzhou University,Wenzhou 325035,China) (2 state key laboratory of industrial control technology,Institute of cyber-systems and control,Zhejiang University,Hangzhou 310027,China) College of Physics & Electronic Information Engineering Wenzhou University State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University

Based on our recent study on probability distributions for evolution in extremal optimization (EO),we propose a modified framework called EOSAT to approximate ground states of the hard maximum satisfiability (MAXSAT) problem,a generalized version of the satisfiability (SAT) *** basic idea behind EOSAT is to generalize the evolutionary probability distribution in the Bose-Einstein-EO (BE-EO) algorithm,competing with other popular algorithms such as simulated annealing and *** results on the hard MAXSAT instances from SATLIB show that the modified algorithms are superior to the original BE-EO algorithm.

关键词： Extremal optimization (EO) Evolution Probability distributions Maximum satisfiability (MAXSAT) problem

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A Minimum Entropy Approach for Multiple-model Estimation

A Minimum Entropy Approach for Multiple-model Estimation

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International Conference on Information Fusion

作者： Han Shen-Tu AnKe Xue DongLiang Peng State Key Laboratory of Industrial Control Technology Institute of Cyber-System and Control Zhejiang University Hang Zhou 310027 P.R. China Institution of Information and Control Hangzhou Dianzi University Hang Zhou 310018 P.R. China

ISBN: (纸本)9781467304177

Multiple-model (MM) methods are effective in handling mode uncertainties and the variable structure multiplemodel (VSMM) approach is one technique of the state of art. However, designing a better model set adaptive (MSA) mechanism is still a challenging problem both in theory and practice. In this paper, we present new theoretical analysis to evaluate the quality of model sequence sets in a nested structure which implies a principle-to find effective model sequence sets with the smallest size if the risk of missing real modes is small enough. A minimum entropy multiple-model (MEMM) approach is proposed to calculate the model sets with minimum Shannon entropy through feed back the online information into the fusion center. Sub-optimal MEMM algorithms are also designed with a particle filter. An example of maneuvering target tracking is considered in simulations. The proposed algorithms are compared to several existing VSMM algorithms and the results show that the MEMM algorithms are robust and effective in both estimation precision and converging rate.

关键词： multiple-model minimum entorpy nested strcture feed back maneuvering

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PFC constraints consistency of multi-layer control structure

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Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and technology 2012年第SUPPL.2期36卷 269-275页

作者： Shi, Ming-Hua Liu, Zhe Xie, Lei Gu, Yong State Key Lab. of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China

Aiming at the problem of multi-layer control structure that can't insure the correctness and feasibility of optimization results of outer loop since the variables constraints in different layers are not uniform, the constraints consistency of multi-layer control structure predictive functional control (PFC) is analyzed. The constraints back calculations from the basic control layer to the dynamic optimization and control layer and then to the steady state optimization layer are implemented, hence the constraints consistency for multi-layer control and optimization is realized to insure that the calculated setpoints are always correct and feasible for basic loop actuators. The simulation results for an integral process show the improvement of control performance by the constraints consistency of multi-layer control structure.

关键词： Back calculation Constraints consistency Predictive functional control Transparent control

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Design and reliability,availability,maintainability,and safety analysis of a high availability quadruple vital computer system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第12期12卷 926-935页

作者： Ping TAN Wei-ting HE Jia LIN Hong-ming ZHAO Jian CHU State Key Laboratory of Industrial Control Technology ＆ Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China hejiang Insigma-Supcon Co. Ltd. Hangzhou 310013 China

With the development of high-speed railways in China,more than 2000 high-speed trains will be put into *** and efficiency of railway transportation is increasingly *** have designed a high availability quadruple vital computer (HAQVC) system based on the analysis of the architecture of the traditional double 2-out-of-2 system and 2-out-of-3 *** HAQVC system is a system with high availability and safety,with prominent characteristics such as fire-new internal architecture,high efficiency,reliable data interaction mechanism,and operation state change *** hardware of the vital CPU is based on ARM7 with the real-time embedded safe operation system (ES-OS).The Markov modeling method is designed to evaluate the reliability,availability,maintainability,and safety (RAMS) of the *** this paper,we demonstrate that the HAQVC system is more reliable than the all voting triple modular redundancy (AVTMR) system and double 2-out-of-2 ***,the design can be used for a specific application system,such as an airplane or high-speed railway system.

关键词： Fault tolerant High availability quadruple vital computer （HAQVC） Reliability availability maintainability and safety （RAMS）

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Identification of abnormal operating conditions and intelligent decision system

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机械工程前沿 2011年第4期6卷 456-462页

作者： Xiuliang LI Junjie JIANG Hongye SU Jian CHU National Key Laboratory of Industrial Control Technology Institute of Cyber-systems and Control Zhejiang University Hangzhou 310027 China

In earth pressure balance (EPB) shield construction,the “plastic flow state” is difficult to form using the soil dug in the capsule because it can cause three abnormal operating conditions,including occlusion,caking in the capsule,and spewing at the outlet of the dump *** abnormal operating conditions can,in turn,trigger failure in tunneling,cutter-device damage,and even catastrophic incidents,such as ground *** present paper effectively integrates the mechanism of abnormal operating conditions and knowledge of soil conditioning,and establishes a uniform model of identifying abnormal conditions and intelligent decision support system based on the belief rule-base *** model maximizes knowledge in improving the soil,construction experience,and data to optimize the model ***,a numerical simulation with specific construction data is presented to illustrate the effectiveness of the algorithm.

关键词： earth pressure balance (EPB) shield machine soil pressure cabin abnormal operating condition belief rule-base system

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ACP based 3D Emergency Drills System for Petrochemical Plants

ACP based 3D Emergency Drills System for Petrochemical Plant...

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World Congress on Intelligent control and Automation

作者： Sifeng Jing Changjian Cheng Gang Xiong Xiwei Liu Xiuqin Shang Weixing Wang State Key Laboratory of Management and Control for Complex Systems Beijing Engineering Research Center of Intelligent Systems and Technology Institute of Automation Chinese Academy of Sciences Dongguan Research Institute of CASIA Cloud Computing Industrial Technology Innovation and Incubation Center Chinese Academy of Sciences

ISBN: (纸本)9781467313971

To further enhance emergency management skills of an organisation's emergency response personnel, emergency response training, especially 3D emergency drill, is currently becoming more and more important in the petrochemical sector. So, a novel 3D emergency drills system is designed and developed based on ACP approach, which can be used for mocking emergency response plan drills and evaluating the plan. A case study reveals that the performance of the system is good and the system can meet the needs of emergency response training and optimizing emergency response plan in petrochemical plants.

关键词： ACP Approach Artificial systems Computational Experiments Parallel Execution Mock-Drill Emergency Response Training

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