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IEEE International Conference on Automation science and Engineering (CASE)

作者： Hui Tang Yangmin Li Qinmin Yang Department of Electromechanical Engineering Faculty of Science and Technology University of Macau Taipa Macao China Overseas Distinguished Professor at the State Key Laboratory of Robotics of Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China Department of Control Science and Engineering Zhejiang University Hangzhou China

This paper presents tracking control of a compliant XY nano-positioner using a transfigured loop-shaping H ∞ (TLSH) control strategy, which is capable of achieving satisfied positioning performance. The employed compliant nano-positioner is featured with a symmetric 4-PP (P represents prismatic joint) structure in which four-bar flexures are designed as the prismatic joints, meanwhile two embedded piezoelectric ceramic actuators (PZT) are adopted. Based on the identified plant transfer function of the nano-positioner, the presented control strategy and the traditional PID controller are implemented with different input scanning frequencies of 0.5 Hz and 2.5 Hz for comparisons. Both the simulation results and the practical experimental results demonstrate that the presented TLSH control method obviously performs better than the traditional PID method in the presence of plant model uncertainty, which will be applied to perform practical micromanipulation tasks.

关键词： Mathematical model Uncertainty Hysteresis Nanobioscience Actuators Robustness

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Evaluation of dual-mode UE MIMO system performance under UE local interference existence

Evaluation of dual-mode UE MIMO system performance under UE ...

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Asia-Pacific Conference on Microwave

作者： Hongli Peng Gan Guo Jinlong Zou Junfa Mao Electronic and Engineering Department Shanghai Jiaotong University Shanghai China China Academy of Telecommunication Research MIIT Beijing China Electromechanical Dynamic Control Laboratory Xi'an Science and Technology University Xi'an China

In this paper, a compact triple-band handset antenna (THA) and its three element array are presented for dual-mode user equipment (UE) applications, with their structures designed and performance validated by measurement. Then, based on the obtained electromagnetic parameters, a 2×2 TD-LTE multi-input and multi-output (MIMO) UE system with UE local DCS1800 interference is studied by simulation in such a realistic manner. Under given interference power level, non-linear relation models of the LTE system throughput and the system isolations are achieved, which can be used to evaluate these system performances.

关键词： Interference MIMO Antennas Throughput Arrays Frequency measurement Loss measurement

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ISS-based vehicle yaw stability controller design in backstepping framework

ISS-based vehicle yaw stability controller design in backste...

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IEEE Conference on Decision and control

作者： Hongliang Zhou Zhiyuan Liu Hong Chen Department of Control Science and Engineering Harbin Institute of Technology 150001 Harbin China Department of Control Science and Engineering Jilin University (Campus NanLing) and with the National Automobile Dynamic Simulation Laboratory. 130025 Changchun China

ISBN: (纸本)9781612848006

A vehicle yaw stability controller is proposed to make vehicle yaw stable in critical cornering manoeuvres in the paper. Considering vehicle body dynamics, wheel dynamics and tire nonlinear characteristics, a discrete nonlinear time-varying model is firstly constructed, with disturbances standing for tire/road forces estimation error and unmodelled dynamics. Then, the controller is proposed based on sliding mode control in backstepping control framework, in which the control input is calculated step-by-step. The stability of the system is analyzed through input-to-state stability (ISS) theory. Finally, a group of simulations is carried out with a multi-body vehicle dynamics software to evaluate the controller and the results indicate that it can maintain vehicle stable in critical cornering situation.

关键词： course stability control input vehicle controllers backstepping control System stability corners Variable structure systems Backstepping controller design

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Withdrawal of Chinese Physics Letters 28 (2011) 107301 "High-Efficiency Graphene Photo Sensor Using a Transparent Electrode" by LIU Tao and HUANG Zheng

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Chinese Physics Letters 2011年第12期28卷 312-312页

作者： LIU Tao HUANG Zheng National Key Laboratory for Electronic Measurement Technology and Key Laboratory of Instrumentation Science and Dynamic Measurement North University of ChinaTaiyuan 030051 Xi'an Institute of Electromechanical Information Technology Xi'an 710065

The authors withdraw the research paper“High-Efficiency Graphene Photo Sensor Using a Transparent Electrode”,which was published in Chinese Physics Letters 28(10),107301(2011),due to the major mistakes in management and experiment,which led to the authors adopting inappropriate data published without sufficient examination and permission processes.

关键词： Efficiency Photo mistake

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Single sensor information fusion for local fault prediction of large rotating machinery

Single sensor information fusion for local fault prediction ...

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International Conference on Electrical and control Engineering, ICECE 2010

作者： Jianghong, Sun Yunbo, Zuo Xu, Xiaoli School of ElectroMechanical Engineering Beijing Information Science and Technology University Beijing China School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing China Beijing Key Laboratory - Measurement and Control of Mechanical and Electrical System Beijing China

ISBN: (纸本)9780769540313

Data process of large rotating machinery is in line with basic features of information fusion. A framework of fault diagnosis and prediction based on sensor information fusion is built. An improved extracting method of features is used to deal with the information fusion of single sensor, which raises the calculation efficiency and precision. The local fault prediction process is presented, and the fault deterioration trend is judged on the basis of dynamic weighted method. Actual example of Beijing Yanshan Petrochemical Co. shows the correction of conclusion. © 2010 Crown.

关键词： Information fusion

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Free-tagging methods for opinion analysis of online news comments

Free-tagging methods for opinion analysis of online news com...

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2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Zhao, Changwei Liu, Heng Peng, Qinke Yang, Ying State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an China School of Electronic and Information Engineering Henan University of Science and Technology Luoyang China National key Laboratory of Electromechanical Engineerning and Control Xi'an Institute of Electrical and Information Technology Xi'an China

ISBN: (纸本)9781424451951

To overcome challenges of processing timeliness and changeful topics when analyzing opinions of online news comments, free-tagging methods including two steps, object identification and polarity analysis, are proposed in this paper. In the first step, from news text, we employ the Affinity Propagation Cluster (APC) to extract key sentences whose name entities will be identified and their specified types will be identified as comment objects. After identifying comment objects, the method of distance-weight count of polarized words and semantic rules are used to determine the polarity of comments. Our method does not require labeled corpus, therefore it can reduce artificial workloads and avoid problems of non-versatility caused by changeful topics of comments. Experiment results show that our method is capable of identifying objects and polarity of online news comments with higher precision and wide coverage rate, and can satisfy the requirements of online news comments analysis. © 2010 IEEE.

关键词： Semantics

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Single Sensor Information Fusion for Local Fault Prediction of Large Rotating Machinery

Single Sensor Information Fusion for Local Fault Prediction ...

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International Conference on Electrical and control Engineering (ICECE)

作者： Sun Jianghong Zuo Yunbo Xu Xiaoli School of ElectroMechanical Engineering Beijing Information Science and Technology University Beijing China School of Mechanical & Vehicular Engineering Beijing Institute of Technology Beijing China Beijing Key Laboratory Measurement and Control of Mechanical and Electrical System Beijing China

关键词： Machinery Feature extraction Fault diagnosis Vibrations Accuracy Turbines Monitoring

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Analysis on Energy Consumption and Optimal Operation of FGD System in Power Plant

Analysis on Energy Consumption and Optimal Operation of FGD ...

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IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

作者： Gang Xu Yongping Yang Nan Wang Xing Yuan Ji Li Xiaona Song Key Laboratory of Condition Monitoring and Control of Power Plant Equipment of Ministry of Education School of Energy and Power Engineering North China Electric Power University Beijing China Electromechanical Practice Center Beijing Information Science and Technology University Beijing China

ISBN: (纸本)9781424448128;9781424448135

This paper analyzed the energy consumption characteristics of typical limestone-gypsum wet flue gas desulfurization (FGD) system which is widely used in power plant for SO x removal, and discussed its optimal operation. In the FGD system, booster fan; circulating slurry pump and oxidation fan are three major energy consuming devices. We established the mathematical models to disclose the relationship between the energy consumption and the desulfurization features of these equipments. On this basis, we obtained the performance curve of these equipments and proposed the optimal operation ways of the FGD system. The promising results obtained here provide a new approach for desulfurization with low energy consumption.

关键词： Energy consumption Power generation Flue gases Slurries Oxidation Blades Absorption Boilers Power system modeling Condition monitoring

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New Environmental Friendly Evaluation Criterion for Coal-Fired Power Plant Comprehensive Performance

New Environmental Friendly Evaluation Criterion for Coal-Fir...

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International Conference on Electrical and control Engineering (ICECE)

作者： Gang Xu Shiyuan Lu Yongping Yang Liqiang Duan Ji Li Le Li Xiaona Song Key Lab of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education North China Electric Power University Beijing China Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education National Engineering Laboratory for Biomass Power Generation Equipment School of Energy and Power Engineering North China Electric Power University Beijing China Electromechanical Practice Center Beijing Information Science and Technology University Beijing China

This paper proposes a new environmental friendly evaluation criterion to assess the comprehensive performance of coal-fired power plant. The new evaluation criterion, which is called the comprehensive Index of Energy, Resources and Environment (I ERE ), can synthetically evaluate the thermal, economical and environmental performance of power plants. Based on the new criterion, the paper analyzes the comprehensive performances of four typical 600MW coal fired power plants, discloses the relation regulation between power plant comprehensive performance criterion I ERE and key independent design variables, and analyzes the main factors influencing the comprehensive performance of power plant. These achievements will provide a new idea and criterion for multi-objective comprehensive evaluation and design parameters optimization of coal-fired power plants.

关键词： Power generation Water pollution Discharges Indexes Water resources Thermal pollution Fuels

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Error analysis of multi-legged walking robots based on forward kinematics

Error analysis of multi-legged walking robots based on forwa...

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IEEE International Conference on Robotics and Biomimetics

作者： Liangwen Wang Xuedong Chen Qingjiu Huang Xinjie Wang Ping Guo Department of Electromechanical Science and Engineering Zhengzhou University of Light Industry Zhengzhou Henan P.R. China Department of Mechanical and Control Engineering Tokyo Institute of Technology Meguroku Tokyo Japan State Key Laboratory of Digital Manufacturing Equipment and technology Huazhong University of Science and Technology Wuhan Hubei P.R. China

ISBN: (纸本)9781424417612;1424417619

Determining precisely the motion of robot body is of great significance to the location and control of mobile robots. If the positions of each foothold and the driven joint variables are inaccurate, actual posture of the robot is likely to deviate from requirement. In this paper, based on the forward kinematics of a multi-legged walking robot, the posture accuracy of the robot is discussed in terms of errors of foothold positions and independent driven joint variables of the robot. The position errors of the dependent joints are firstly derived from the constraint equations which descript the kinematic relation between independent and dependent joints. The error of orientation matrix of the robot is then calculated. Finally, the position error of Center-of-Gravity of the robot is obtained on the base of the above calculation. The analysis process is verified through a numerical example.

关键词： Legged locomotion Error analysis Robot kinematics Leg Manufacturing Mobile robots Error correction Motor drives Biomimetics Laboratories

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