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31st Chinese control Conference, CCC 2012

作者： Jinni, Zhou Qianyi, Zhong Yan, Cai Min, Wu School of Information Science and Engineering Central South University Changsha 410083 China Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha 410083 China School of Electronic Engineering Xidian University Xi'an 710071 China

ISBN: (纸本)9789881563811

For the stacker-reclaimer job optimization problem of sinter material plant in iron and steel enterprises, this paper establishes a multi-objective optimization model for stacker-reclaimer job according to the production planning and locations of stacker-reclaimers and stockpiles, and then proposes an optimization method based on analytic hierachy process(AHP) and linear programming(LP), so as to achieve the goals of the shortest walking path and the maximum utilization of the stacker-reclaimer. Firstly, using AHP method to determine the weights of the various targets in order to change multi-objective optimization problem into single-objective optimization problem;Secondly, using LP method to solve the optimization model. This method has been applied to a stacker-reclaimer job control system in a 360m2 sintering material plant of an iron and steel enterprise, and the practical result shows that this method can effectively improve the stacker-reclaimer's job efficiency, reduce the operation waste and decrease the maintenance costs of stacker-reclaimer. © 2012 Chinese Assoc of Automati.

关键词： Sintering

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Command switching strategy based safety protection control for aeroengines

Command switching strategy based safety protection control f...

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UKACC International Conference on control (control)

作者： Chao Chen Xi-Ming Sun State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang China School of Control Science and Engineering Dalian University of Technology Dalian China

Based on the simplified hypersonic air-breathing propulsion model, this paper studies the output regulation/ safety protection multi-objective switching control problem focusing on the safety boundaries existing during the working progressing. Command switching strategy based on the safety margin is researched. In the safe region with a sufficiently large safety margin, the regulation loop is active and the regulated output is controlled to track the reference signal as quickly as possible. But the protected loop will be switched on and the protected output will be forced to escape from dangers once the safety boundaries approach. A dynamical state feedback controller and a protection controller work in turn in a hysteresis switching way to guarantee the asymptotic tracking with certain safety performance. The conditions under which the asymptotic tracking could be guaranteed are given and the control parameters could be calculated by solving optimal problems. It is pointed out in this paper that the designing of the regulation controller and the protection controller could be implemented separately, and the control parameters could be optimized to get certain optimal performance index using numerical method. Finally, simulation researches are performed to verify the effectiveness of the given methods, which also indicate that the commands switching control can improve both safety margin and the dynamical performance indices than the single controller.

关键词： Switches Industries MATLAB

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Wind power slope events classification and forecasting based on statistical analysis and multiple support vector machines

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Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University 2012年第12期46卷 1971-1976页

作者： Li, Fu-Dong Wu, Min Feng, Gao-Yi School of Information Science and Engineering Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Central South University Changsha 410083 China The Training Center of Hunan Electric Power Corporation Changsha 410131 China The New Energy Company of Datang Huayin Shaoyang 422000 Hunan China

To evaluate the influence of wind power fluctuations and optimize the control of wind power system, a method of wind power slope events classification and forecasting based on statistical analysis and multiple support vector machine was presented. Firstly, the wind power slope events were defined and classified. Then, the wind power data collected from a wind farm were used to investigate the classification and range of slope events, and the internal laws of slope events were explored. In this context, the binary support vector machine (SVM) was extended to multiple support vector machines (MSVMs) and was applied to the classification of slope down/up events for both one-step and multi-step ahead scenarios. Finally, the numerical results based on the wind power data verify the effectiveness of the proposed approach.

关键词： Support vector machines

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A neurodynamic approach to model predictive control of piecewise linear systems

A neurodynamic approach to model predictive control of piece...

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International Conference on Intelligent control and Information Processing (ICICIP)

作者： Zheng Yan Jun Wang The Department of Mechanical and Automation Engineering Chinese University of Hong Kong Shatin New Territories Hong Kong China School of Control Science and Engineering Dalian University of Technology Dalian Liaoning China

This paper presents a neurodynamic approach to model predictive control (MPC) of constrained piecewise linear systems. A novel procedure for estimating uncertain system parameters of piecewise linear systems is proposed. The model predictive control problem is then formulated as a quadratic optimization problem. To realize the real-time optimization in MPC, a one-layer recurrent neural network is employed for solving the quadratic optimization problem during each sampling interval. The overall MPC approach is of low computational complexity. Simulation results are included to substantiate the effectiveness and usefulness of the proposed approach.

关键词： Optimization Vectors Predictive control Neurodynamics Recurrent neural networks Biological neural networks Linear systems

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Research of Compound controller for Flight Simulator with Disturbance Observer

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Chinese Journal of Aeronautics 2011年第5期24卷 613-621页

作者： WU Yunjie LIU Xiaodong TIAN Dapeng Science and Technology on Aircraft Control Laboratory School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China

A compound controller is proposed to alleviate the considerable chattering in output of zero phase error tracking controller （ZPETC）, when the flight simulator losses command data of simulation signal. Besides, the shortcomings, caused by conventional differential methods in retrieving velocity and acceleration signals, are avoided to a certain extent. The compound controller based on disturbance observer （DOB） is composed of a feed-forward controller and a feedback controller. It estimates velocity and acceleration of unknown tracking signal, and also velocity response with an approximate method for differential. The experiments on a single-axis flight simulator show that the proposed method has strong robustness against parameter perturbations and external disturbances, owing to the introduced DOB. Compared with the scheme with ZPETC, the proposed scheme possesses more simple design and better tracking performance. Moreover, it is less sensitive to position command distortion of flight simulator.

关键词： compound controller zero phase error tracking controller flight simulators disturbance observer robustness

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A NoSQL based cached storage solution of GIS Web service

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2012年第20期6卷 268-276页

作者： Liu, Jin Wu, Yangping Zhuo, Dan Hu, Qiping Wang, Yan Zhang, Wensheng State Key Lab of Software Engineering Computer School Wuhan University China International School of Software Wuhan University China State Key Lab of Management and Control for Complex Systems Institute of Automation Chinese Academy of Science China

One of challenges in GIS Web service is mass GIS data storage and processing. There are at least three obstacles that oppose dealing with this challenge: the mismatch between the frequent requirement of concurrent tasks for accessing data in GIS Web service and the poor performance of conventional storage mechanism such as relational databases;the insufficiency of relational databases to manage complex data types in GIS Web service;the horizontal scalability of storage for non-stop GIS Web service evolution. This paper proposes a distributed cached storage solution, as the mixture of MongoDB storage and Memcached cache, for GIS Web service. Both techniques are closely related to NoSQL that is a class of database management system identified by its non-adherence to the widely used relational database management system (RDBMS) model. A concise case that facilitates a better understanding of this work indicates its feasibility.

关键词： Websites

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Automatic sleep level evaluation based on conditional probability for day time nap sleep evaluation

Automatic sleep level evaluation based on conditional probab...

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IEEE/ICME International Conference on Complex Medical engineering, CME

作者： Bei Wang Xingyu Wang Masatoshi Nakamura Department of Automation School of Information Science and Engineering East China University of Science and Technology Shanghai China Research Institute of Systems Control Institute for Advanced Research and Education Saga University Saga Japan

In this study, the automatic technique for the continuous light sleep level estimation and prediction is developed. The ultimate purpose is to realize the automatic sleep level evaluation for short-term day time nap sleep. The main method is based on the conditional probability obtained according to the characteristics of neuro-physiological signals including EEG, EOG and EMG. The estimated and predicted sleep level are compared with the visual inspection. The obtained results showed that the presented automatic technique is practicable to be an assistant subjective evaluation tool for sleep level analysis.

关键词： Electromyography Inspection

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A Tighter Reachable Set Bound for Linear Systems Subject to both Discrete and Distributed Delays

A Tighter Reachable Set Bound for Linear Systems Subject to ...

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IEEE Annual Conference on Decision and control

作者： Zhiqiang Zuo Youhua Fu Yijing Wang Chanying Li Michael Z. Q. Chen Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Academy of Mathematics and Systems Science Chines Academy of Sciences Department of Mechanical Engineering The University of Hong Kong

ISBN: (纸本)9781467320658

The problem of reachable set bounding for a class of linear systems subject to both discrete and distributed delays is addressed in this paper. First, a new criterion is derived to give an ellipsoid which bounds all the states starting from the origin by inputs with peak-values. The constraint with a special structure that appeared in our previous result is removed by combining the Jensen integral inequality and the reciprocally convex approach. In addition, the obtained condition brings a tighter reachable set estimation with lower computational complexity. We also extend the above result to systems with polytopic uncertainties. Finally, an example is presented to illustrate the merit of our proposed method.

关键词： delay distribution Linear system discrete element Ellipsoid complexity classes Bound Set (Psychology)

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Stability Analysis for High Frequency Networked control Systems

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IEEE Transactions on Automatic control 2012年第10期57卷 2694-2700页

作者： Hongjiu Yang Yuanqing Xia Peng Shi Mengyin Fu Institute of Electrical Engineering Yanshan University Qinhuangdao China School of Automation Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology Beijing China School of Engineering and Science Victoria University Melbourne VIC Australia Department of Computing and Mathematical Sciences University of Glamorgan Pontypridd UK

This note generalizes the stability analysis for a high frequency networked control system. The high-frequency networked control system is described by a delta operator system with a high frequency constraint. Stability conditions are given for the high frequency delta operator system. Furthermore, by developing the generalized Kalman-Yakubovic-Popov lemma, improved stability conditions are also presented in terms of linear matrix inequalities. Some experiment results are presented to illustrate the effectiveness of the developed techniques.

关键词： Stability analysis Delay Linear matrix inequalities Frequency control Educational institutions Power system stability Numerical stability

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Application of Fuzzy Neural Network in Burden Surface Clustering

Application of Fuzzy Neural Network in Burden Surface Cluste...

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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： Dexin Liu Xiaoli Li Shuting Lu Dawei Ding Xianzhong Chen School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing 100083 Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) Beijing 100083 China

Blast furnace charging distribution plays an important role in the steel production. The radar data containing the information of present burden surface situation and the cross thermometer data reflecting the trend of burden surface are taken as the training data of fuzzy neural network. The trained network will be used for the future clustering of the data. Considering the demand of energy-saving and consumption-decreasing, the method sets up the basic for the distribution control in the next step. The simulation results show the effectiveness of the proposed method.

关键词： Burden Surface Fuzzy Neural Network and Cluster

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