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41st North American Manufacturing research Conference 2013, NAMRC 2013

作者： Özel, Tuǧrul Thepsonthi, Thanongsak Amarasinghe, Voshadhi Celler, George K. Manufacturing and Automation Research Laboratory Department of Industrial and Systems Engineering Rutgers University Piscataway NJ United States Institute for Advanced Materials Devices and Nanotechnology Rutgers University Piscataway NJ United States

ISBN: (纸本)9781627486972

This paper reports about the investigation on pulsed laser assisted exfoliation of thin layers from hydrogen ion implanted single crystalline SiC. Single crystalline SiC offers various high power and high temperature device applications including hybrid and electric vehicles. Its high cost can be lowered by precision cutting of thin layers and transferring them on to lower cost substrates such as Si and polycrystalline SiC. Nanosecond high energy laser pulses have been utilized for thin film exfoliation and removal just under the hydrogen implanted and damaged subsurface. Exfoliated and transferred SiC surfaces have been evaluated with Scanning Electron Microscopy. Furthermore, thermal modelling of pulse laser irradiation of implanted multi-layer SiC material has been conducted and temperature profiles vs. depth and time are obtained at different peak pulse intensity settings to optimize exfoliation process parameters.

关键词： Silicon carbide

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Automatic Estimation of Sleep Level for Nap Based on Conditional Probability of Sleep Stages and An Exponential Smoothing Method

Automatic Estimation of Sleep Level for Nap Based on Conditi...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society

作者： Bei Wang Xingyu Wang Tao Zhang Masatoshi Nakamura Key Laboratory of Advanced Control and Optimization for Chemical Processes (East China University of Science and Technology) Ministry of Education Department of Automation Tsinghua University Research Institute of Systems Control Institute for Advanced Research and Education Saga University

ISBN: (纸本)9781457702150

An automatic sleep level estimation method was developed for monitoring and regulation of day time nap sleep. The recorded nap data is separated into continuous 5-second segments. Features are extracted from EEGs, EOGs and EMG. A parameter of sleep level is defined which is estimated based on the conditional probability of sleep stages. An exponential smoothing method is applied for the estimated sleep level. There were totally 12 healthy subjects, with an averaged age of 22 yeas old, participated into the experimental work. Comparing with sleep stage determination, the presented sleep level estimation method showed better performance for nap sleep interpretation. Real time monitoring and regulation of nap is realizable based on the developed technique.

关键词： Sleep level estimation Sleep stage Conditional probability Nap regulation

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Three Dimensional Manufacturing Tolerance Design Using Convex Sets

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Procedia CIRP 2013年 10卷 259-266页

作者： Jin Zhang Lihong Qiao Advanced Manufacturing Technology and Systems Research Centre Department of Industrial and Manufacturing Systems Engineering School of Mechanical Engineering and Automation Beihang University Beijing 100191 PRC

High demand of wide use of three-dimensional operation models in process planning has resulted in an urgent exploration of new approaches to 3D manufacturing process design. In this paper, 3D process dimension and manufacturing tolerance design issue is studied. A 3D tolerance zone calculation method is developed. The method consists of two procedures including 3D tolerance zone modeling and its calculation. Small displacement torsors (SDT), in conjunction with the robotics kinematics, are utilized to establish the algebra model of the 3D tolerance zone and the tolerance propagation model. Convex sets theory is applied in the calculation and optimization of the size of the zone. The proposed method facilitates the design of the tolerance of the zone by using the variation ranges of uncertain parameters instead of the tolerance distribution. An example of 3D manufacturing tolerance design for a prismatic part is provided with Monte Carlo simulation results to illustrate the effectiveness of the proposed approach.

关键词： process planning 3D manufacturing tolerancing tolerance zone calculation convex set small displacement torsor

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Reliable guaranteed-cost control for a class of nonlinear stochastic systems with fading performance output

Reliable guaranteed-cost control for a class of nonlinear st...

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32nd Chinese control Conference, CCC 2013

作者： Hu, Jun Wang, Zidong Shen, Bo Xiao, He Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150001 China Department of Automation Tsinghua University Beijing 100084 China School of Information Science and Technology Donghua University Shanghai 200051 China

ISBN: (纸本)9789881563835

This paper is concerned with the reliable guaranteed-cost control problem for a class of discrete nonlinear stochastic systems with actuator failures and fading performance output. The stochastic nonlinearities described by statistical means could cover several types of well-studied stochastic nonlinearities. Moreover, the phenomenon of fading performance output occurs in a random way and the fading probability is governed by a random variable satisfying a certain probability distribution with known conditional probability. The main purpose of this paper is to design a reliable controller, over a given finite-horizon, such that the optimized upper bound to the pre-defined performance index is guaranteed for the addressed systems in the presence of actuator failures, stochastic nonlinearities and fading performance output. Finally, a numerical example is given to illustrate the effectiveness of the proposed control scheme. © 2013 TCCT, CAA.

关键词： Probability distributions

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EEG correlation analysis under the condition of +Gz accelerations

EEG correlation analysis under the condition of +Gz accelera...

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2nd International Conference on Green Communications and Networks, GCN 2012

作者： Li, Yifeng Zhang, Tao Wang, Bei Deng, Lue Nakamura, Masatoshi Department of Automation School of Information Science and Technology Tsinghua University Beijing 100084 China Air Force Institute of Aeromedicine Beijing 100142 China Department of Automation East China University of Science and Technology Shanghai 200237 China Research Institute of Systems Control Saga University Saga 840-0047 Japan

ISBN: (纸本)9783642354182

In this research, Electroencephalogram (EEG) data under the condition of +Gz accelerations were recorded and its correlation analysis was done. The correlation change feathers were found for different loads through respective correlation analysis including auto-correlation and cross-correlation analysis for 16 derivation EEG data. The results show that, auto-correlation and cross-correlation are gradually decreased with time lag increasing. Correlation diagrams show that the first peak after zero lags appeared as main peak which responses to relatively stronger correlation. The relationship between correlation and different action of +Gz loads from analysis of a lot of EEG data indicates that EEG correlation is greatly affected by G loads. © 2013 Springer-Verlag.

关键词： Electroencephalography

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Setpoints Compensation in Industrial Processes via Multirate Output Feedback control

Setpoints Compensation in Industrial Processes via Multirate...

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9th Asian control Conference (ASCC)

作者： Yin, Shen Liu, Fangzhou Gao, Huijun Qiu, Jianbin Chai, Tianyou Fan, Jialu Karimi, Hamid Reza Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150080 China State Key Laboratory for Synthetical Automation of Process Industries Northeastern University Shenyang 110004 China Department of Engineering University of Agder Grimstad N-4898 Norway

ISBN: (纸本)9781467357692;9781467357678

This paper investigates the setpoints compensation for a class of complex industrial processes. Plants at the device layer are controlled by the local regulation controllers, and a multirate output feedback control approach for setpoint compensation is proposed such that the subsystems can reach the dynamically changed setpoints and the given economic objective can also be tracked via certain economic performance index (EPI). First, a sampled-data multivariable direct output feedback proportional integral (PI) controller is designed to regulate the performance of the subsystems. Second, the outputs and control inputs of the plants at the device layer are sampled at operation layer sampling time to form an EPI. Thus the multirate problem is solved by a lifting method. Third, static setpoints are generated by real time optimization (RTO) and the dynamic setpoints are calculated by the compensator according to the error between the EPI and objective at each operation layer step. Finally, a rougher flotation process model is employed to demonstrate the effectiveness of the proposed method.

关键词： PI control compensation complex networks control system synthesis feedback multivariable control systems optimisation process control sampled data systems

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Pre-judgments for reference potential determination to quantitative EEG interpretation: Amplitude distribution and ear-lobe activation

Pre-judgments for reference potential determination to quant...

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World Congress on Medical Physics and Biomedical Engineering

作者： Wang, Bei Wang, Xingyu Ikeda, Akio Nagamine, Takashi Shibasaki, Hiroshi Nakamura, Masatoshi Department of Automation College of Information Science and Technology East China University of Science and Technology Shanghai 200237 China Department of Neurology Kyoto University Kyoto 606-8501 Japan Department of System Neuroscience Sapporo Medical University Hokkaido 060-8556 Japan Takeda General Hospital Kyoto 601-1495 Japan Research Institute of Systems Control Institute for Advanced Research and Education Saga University Saga 840-0047 Japan

ISBN: (纸本)9783642293047

This paper presents an automatic technique of suitable reference potential selection for quantitative EEG inter- pretation. The 16-channels EEG recording under mono-polar derivation is analyzed. There are two pre-judgments defined for checking the amplitude distribution and ear lobe activation. Af- ter pre-judgments, the EEG is classified into several cases in- cluding diffused case, non-diffused case, and artifact contami- nation case. Due to the cases, an automatic reference selection method is applied in order to find out suitable reference po- tential. Finally, the referential derivation constructed accord- ing to the obtained reference potential, is evaluated for fur- ther EEG rhythm analysis. The presented technique can high- light the EEG rhythm of interest, which is useful for quantita- tive EEG interpretation by both visual inspection and automatic evaluation. © 2013 Springer-Verlag.

关键词： Chemical activation

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control Lyapunov function based feedback design for quasi-polynomial systems

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IFAC Proceedings Volumes 2013年第23期46卷 128-133页

作者： Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary Process Control Research Group Computer and Automation Research Institute HAS Budapest Hungary

The aim of this work is to present an entropy-like Lyapunov function based dynamic feedback design technique for quasi-polynomial and Lotka-Volterra systems. It is shown, that the dynamic feedback design problem is equivalent to the feasibility of a bilinear matrix inequality. The problem is also formulated as a control Lyapunov function based feedback design when the Lyapunov function parameters are given, the solution of this problem can be obtained by solving a linear matrix inequality. The developed method is illustrated on a simple numerical example.

关键词： Lyapunov stability nonlinear systems stabilizing feedback dynamic feedback optimization problems

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Design of a BACnet-ZigBee gateway for Smart Grid in buildings

Design of a BACnet-ZigBee gateway for Smart Grid in building...

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2013 IEEE Conference Anthology, ANTHOLOGY 2013

作者： Kim, Gi Myung Kim, Se Hwan Hong, Seung Ho Lee, Jin Department of Electrical Control and Instrumentation Engineering Hanyang University Ansan Korea Republic of Head of Advanced Technology RandD Center Research and Development Group LS Industrial Systems Co. Ltd. Anyang Korea Republic of

ISBN: (纸本)9781479916603

Smart Grid (SG) is a modernized and a future-oriented electric grid that deals with the whole energy chain from generation to consumer. Among SG applications, demand response (DR) is an important control mechanism to manage the electricity consumption of the customer in response to the supply condition. In buildings, DR is managed through communication networks installed in the buildings. These communication protocols must include DR-supporting applications. BACnet (Building automation and control network) [3] is an international standard communication protocol for building automation and control systems (BACS). BACnet uses ZigBee as a wireless communication protocol for BACS. Both BACnet and ZigBee have their own DR applications. In this study, we developed a BACnet-ZigBee gateway that maps the DR application of BACnet to that of ZigBee. The function of the BACnet-ZigBee gateway was verified through experiment. © 2013 IEEE.

关键词： Zigbee

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Identification of system poles using hyperbolic metrics

Identification of system poles using hyperbolic metrics

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3rd IASTED Asian Conference on Modelling, Identification, and control, AsiaMIC 2013

作者： Soumelidis, Alexandros Bokor, József Schipp, Ferenc Computer and Automation Research Institute Systems and Control Laboratory Kende 13-17 Budapest Hungary Department or Numerical Analysis Eötvös Loránd University Pázmány Péter 1/C Budapest Hungary

ISBN: (纸本)9780889869462

This paper gives an analysis on the opportunities of using some principles of the hyperbolic geometry in the field of signals and systems theory. Based upon the hyperbolic transform realized by the Blaschke function a hyperbolic metric is defined on the unit circle that corresponds to the notions of the Poincaré disc model of the hyperbolic geometry. Based on the hyperbolic metric and the Laguerre representation of analytic functions in the unit disc a method is outlined, which gives the opportunity to derive the poles of the functions. Deriving the poles in combination with function representations in rational orthogonal bases solves the nonparametric identification problem in the frequency domain.

关键词： Poles

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