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Set-based analysis of the variable-geometry suspension system

IFAC Proceedings Volumes 2014年第3期47卷 11201-11206页

作者： Balázs Németh Peter Gáspár Institute for Computer Science and Control Hungarian Academy of Sciences Hungary Kende u. 13-17 H-1111 Budapest Hungary Phone: +36-12796173 Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group Hungary Fax: +36-14667503 Phone: +36-12796171

The paper gives an analysis of a variable-geometry suspension system. Since the system also affects both the wheel camber angle and the additional steering angle, the coordination of steering and wheel tilting can be handled by this system. Since the nonlinear effects of the system are significant, the paper gives a detailed set-based analysis for the possibilities and constrains. A nonlinear polynomial SOS (Sum-of-Squares) programming method is applied to present the advantages of the variable-geometry suspension system.

关键词： Variable-geometry suspension Performance analysis SOS method Reconfigurable control

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Hardware microprocessor thermal emulation using synthetic heat sources and temperature sensors in FPGA

Hardware microprocessor thermal emulation using synthetic he...

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International Workshop on Thermal Investigation of ICs and Systems (THERMINIC)

作者： Bartosz Wojciechowski Maciej Nikodem Paweł Weber Maciej Zagrabski Krzysztof Kępa Institute of Computer Engineering Control and Robotics Wroclaw University of Technology Wroclaw Poland Bradley Department of Electrical and Computer Engineering Virginia Tech Blacksburg VA USA

This work presents an early evaluation of FPGA-based hardware thermal emulation methodology based on artificial heat sources and temperature sensors that can be used in real-time thermal simulation infrastructure. Main functional blocks of a microprocessor are emulated as controllable heaters - blocks with resources configured for artificially high power dissipation. Based on power inputs from an architecture-level simulator the power dissipated by the heaters is adjusted and their temperature is measured by embedded thermal sensors based on ring oscillators (RO). This allows for real-time thermal emulation of future multi-core microprocessor systems considering long time constants of whole cooling packages and also effects such as thermal coupling between the cores.

关键词： Heating Temperature sensors Microprocessors Temperature measurement Field programmable gate arrays

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Design of adaptive cruise control for road vehicles using topographic and traffic information

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IFAC Proceedings Volumes 2014年第3期47卷 4184-4189页

作者： Péter Gáspár Balázs Németh Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group Hungary Fax: +36-14667503 Phone: +36-12796171 Institute for Computer Science and Control Hungarian Academy of Sciences Hungary Kende u. 13-17 H-1111 Budapest Hungary Phone: +36-12796173

The paper proposes the design of the speed of road vehicles, which minimizes control energy and fuel consumption while keeping travelling time and, moreover, considers the local traffic information to avoid conflicts in congestions. Topographic data and speed limits on the road are incorporated into the design of fuel efficient operation of the vehicle. Since the biased consideration of fuel consumption may lead to the reduction of speed, the traffic flow in the surroundings of the vehicle may be impaired. Thus, the information about the local traffic is an important factor considering the wider transportation system. In the paper the energy-efficient predicted cruise control strategy is presented, which is able to adapt to the motion of the surrounding vehicles. In this way a balance between the designed speed and the flow of the local traffic can be guaranteed.

关键词： adaptive cruise control look-ahead control road preview traffic information optimization

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Interoperating Cloud Services for Enhanced Data Management

Interoperating Cloud Services for Enhanced Data Management

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IEEE International Conference on Big Data and Cloud Computing (BdCloud)

作者： Attila Kertesz Institute for Computer Science and Control MTA SZTAKI Hungary Software Engineering Department University of Szeged Hungary

Cloud Computing has reached a maturity state and high level of popularity that various Cloud services have become a part of our lives. The Internet of Things provides a way to improve social networking by interdisciplinary efforts that can be effectively supported by Cloud Computing solutions. In this article we propose novel approaches for composing and interoperating Cloud solutions to support IoT functionality. We exemplify how to manage, share and process user data produced by mobile devices in different IaaS clouds.

关键词： Cloud computing Mobile handsets Clouds Internet of things Big data Mobile communication Europe

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A Model of Demand Response Scheduling for Cement Plant

A Model of Demand Response Scheduling for Cement Plant

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IEEE International Conference on Systems, Man, and Cybernetics

作者： XinZhang Zhao Ben He Fang Yuan Xu Loi Lei Lai Chenhao Yang Sha Lu Dongxing Li School of Computer and Control Engineering University of Chinese Academy of Sciences State Grid Energy Research Institute

ISBN: (纸本)9781479938414

The purpose of Demand Response (DR) is to guarantee that the power grid runs in an efficient and stable status by letting the consumers participate in the grid operation. Numerous studies of DR modeling and analysis are implemented for consumers in the residential and commercial sectors, while the studies on the DR in the industrial sector are relatively immature. The ability to participate in DR differs due to the differences in the production processes of different industries. In this paper, we analyze the process and characteristics of cement production, one of the biggest industrial power consumers in China. A simulation model for cement plant based on the start probability of process equipment is also described. Simulation results of a case study show how the plant's loads shift under a Time-of-use (TOU) application.

关键词： Demand Response Cement plant Load shift Modeling and simulation

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Materials Science/Clinical Medi Cine: Epidermal devices for noninvasive, precise, and continuous mapping of macrovascular and microvascular blood flow

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Science Advances 2015年第9期1卷

作者： Webb, R. Chad Ma, Yinji Krishnan, Siddharth Li, Yuhang Yoon, Stephen Guo, Xiaogang Feng, Xue Shi, Yan Seidel, Miles Cho, Nam Heon Kurniawan, Jonas Ahad, James Sheth, Niral Kim, Joseph TaylorVI, James G. Darlington, Tom Chang, Ken Huang, Weizhong Ayers, Joshua Gruebele, Alexander Pielak, Rafal M. Slepian, Marvin J. Huang, Yonggang Gorbach, Alexander M. Rogers, John A. Department of Materials Science and Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign UrbanaIL61801 United States Departments of Civil and Environmental Engineering Mechanical Engineering Center for Engineering and Health Skin Disease Research Center Northwestern University EvanstonIL60208 United States Department of Engineering Mechanics Center for Mechanics and Materials Tsinghua University Beijing100084 China Institute of Solid Mechanics Beihang University Beijing100191 China National Institute of Biomedical Imaging and Bioengineering National Institutes of Health BethesdaMD20892 United States College of Aerospace and Civil Engineering Harbin Engineering University Harbin150001 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing210016 China Genomic Medicine Section Hematology Branch National Heart Lung and Blood Institute National Institutes of Health BethesdaMD20892 United States Department of Electrical and Computer Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign UrbanaIL61801 United States L'Oreál California Research Center 953 Indiana Street San FranciscoCA94107 United States Department of Medicine Sarver Heart Center Department of Biomedical Engineering University of Arizona TucsonAZ85724 United States

Continuous monitoring of variations in blood flow is vital in assessing the status of microvascular and macrovascular beds for a wide range of clinical and research scenarios. Although a variety of techniques exist, most require complete immobilization of the subject, thereby limiting their utility to hospital or clinical settings. Those that can be rendered in wearable formats suffer from limited accuracy, motion artifacts, and other shortcomings that follow from an inability to achieve intimate, noninvasive mechanical linkage of sensors with the surface of the skin. We introduce an ultrathin, soft, skin-conforming sensor technology that offers advanced capabilities in continuous and precise blood flow mapping. Systematic work establishes a set of experimental procedures and theoretical models for quantitative measurements and guidelines in design and operation. Experimental studies on human subjects, including validation with measurements performed using state-of-the-art clinical techniques, demonstrate sensitive and accurate assessment of both macrovascular and microvascular flow under a range of physiological conditions. Refined operational modes eliminate long-term drifts and reduce power consumption, thereby providing steps toward the use of this technology for continuous monitoring during daily activities. © 2015 The Authors, some rights reserved.

关键词： Blood

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Adaptive cubature strong tracking information filter using variational Bayesian method 19

Adaptive cubature strong tracking information filter using v...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Ge, Quanbo Wen, Chenglin Chen, Shaodong Sun, Ruoyu Li, Yuan Institute of Systems Science and Control Engineering School of Automation Hangzhou Dianzi University Hangzhou Zhejiang310018 China Luoyang Institute of Electro Optical Equipment of AVIC Luoyang Henan471000 China Department of Electrical and Computer Engineering University of Minnesota MinneapolisMN55414 United States Information Engineering School Shenyang University of Chemical Technology Shenyang Liaoning100142 China

ISBN: (纸本)9783902823625

For most practical nonlinear state estimation problems, the conventional nonlinear filters do not usually work well for some cases, such as inaccurate system model, sudden change of state-interested and unknown variance of measurement noise. In this paper, an adaptive cubature strong tracking information filter using variational Bayesian (VB) method is proposed to cope with these complex cases. Firstly, the strong tracking filtering (STF) technology is used to integrally improve performance of cubature information filter (CIF) aiming at the first two cases and an iterative scheme is presented to effectively evaluate a strong tracking fading factor. Secondly, the VB method is introduced to iteratively evaluate the unknown variance of measurement noise. Finally, the novel adaptive cubature information filter is obtained by perfectly combining the STF technology with the VB method, where the variance estimation provided by the VB method guarantees normal running of the strong tracking functionality. © IFAC.

关键词： Information filtering

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Temperature control for Nano-Scale Films by Spatially-Separated Atomic Layer Deposition Based on Generalized Predictive control

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IEEE Transactions on Nanotechnology 2015年第6期14卷 1094-1103页

作者： He, Wen-Jie Zhang, Hai-Tao Chen, Zhiyong Lin, Ji-Long Tian, Kan Shan, Bin Chen, Rong State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Key Laboratory of Image Processing and Intelligent Control School of Automation State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan430074 China School of Electrical Engineering and Computer Science University of Newcastle CallaghanNSW2308 Australia China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China

This paper established a closed-loop temperature control system for a spatially-separated atomic layer deposition (S-ALD) reactor using generalized predictive control (GPC) algorithm. The GPC-based closed-loop control system rapidly and precisely stabilized the reactor temperature in the presence of thermal field disturbances. Compared with the proportion-integration differentiation (PID) control commonly used for S-ALD, the closed-loop GPC system attenuated reaction temperature oscillations when producing two-element nano-scale thin films. Furthermore, the proposed GPC system demonstrated the superiority in multi-element nano-laminates depositing efficiency by reducing the settling time with a substrate moving between different reactors. Electrical and optical properties of films verified the feasibility of the proposed GPC system. Finally, experimental results presented that the microstructure of the deposited ALD nanometer thin film was improved with the developed GPC system, compared with the PID strategy. © 2002-2012 IEEE.

关键词： Atomic layer deposition

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A Partial-State Observer for a Class of MIMO Nonlinear Systems

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IFAC Proceedings Volumes 2014年第3期47卷 3676-3681页

作者： Lei Wang Alberto Isidori Hongye Su Weihua Xu State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University 310027 Hangzhou P.R.China Department of Computer Control and Management Engineering University of Rome “La Sapienza” Rome Italy

In this paper, we consider input-affine invertible MIMO nonlinear systems which can be transformed into a special normal form by means of the structure algorithm. The normal form highlights a partial state, a subset of state variables, which plays in this setting a role similar to that of the outputs and its derivatives in a SISO system. It is shown that, if a system in this class can be asymptotically stabilized by means of a static feedback from that partial state, then semiglobal stabilization can be achieved via dynamic feedback driven by the output of the system. The dynamic feedback in question is based a (non–trivial) extension to MIMO systems of the standard high–gain observer.

关键词： MIMO nonlinear systems structure algorithm normal forms minimum-phase systems nonlinear observers

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Generalized synchronization of nonlinear chaotic systems through natural bioinspired controlling strategy

Abstract and Applied Analysis

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Abstract and Applied Analysis 2015年第1期2015卷

作者： Li, Shih-Yu Chen, Shi-An Lin, Chin-Teng Ko, Li-Wei Yang, Cheng-Hsiung Chen, Heng-Hui Brain Research Center National Chiao Tung University Hsinchu Taiwan Department of Electrical and Computer Engineering National Chiao Tung University Hsinchu Taiwan Department of Biological Science and Technology National Chiao Tung University 1001 Ta Hsueh Road Hsinchu 300 Taiwan Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taipei Taiwan Department of Mechanical Engineering Hsiuping University of Science and Technology Taichung Taiwan

A novel bioinspired control strategy design is proposed for generalized synchronization of nonlinear chaotic systems, combining the bioinspired stability theory, fuzzy modeling, and a novel, simple-form Lyapunov control function design of derived high efficient, heuristic and bioinspired controllers. Three main contributions are concluded: (1) apply the bioinspired stability theory to further analyze the stability of fuzzy error systems;the high performance of controllers has been shown in previous study by Li and Ge 2009, (2) a new Lyapunov control function based on bioinspired stability theory is designed to achieve synchronization without using traditional LMI method, which is a simple linear homogeneous function of states and the process of designing controller to synchronize two fuzzy chaotic systems becomes much simpler, and (3) three different situations of synchronization are proposed;classical master and slave Lorenz systems, slave Chen's system, and Rossler's system as functional system are illustrated to further show the effectiveness and feasibility of our novel strategy. The simulation results show that our novel control strategy can be applied to different and complicated control situations with high effectiveness. © 2015 Shih-Yu Li et al.

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