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A new method for compensating phase-shifting error in phase measuring profilometry

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) 2010年第SUPPL. 1期40卷 302-307页

作者： Zhu, Lin Da, Feipeng Gai, Shaoyan Research Institute of Automation Southeast University Nanjing 210096 China Key Laboratory of Measurement and Control of Complex Systems of Engineering of Ministry of Edu. Southeast University Nanjing 210096 China

A new phase-shifting error compensating algorithm for phase-measuring profilometry is proposed. In this error detecting algorithm, it is supposed that sinusoidal fringe is projected to the plate, thus the phase differences between adjacent pixels are equal. Three adjacent phase points are taken as the research object. Combining the principle of phase compensation measurement, each phase of the point is presented as an equation containing the phase-shifting error. According to the characteristics that the phase differences between adjacent pixels are equal, an equation to calculate the phase-shifting error is constructed. Then the phase shifting error is taken into account in the original algorithm for error compensation. Simulation results show the inhibitory effect of the error compensation by using the novel algorithm. The proposed algorithm is also used for three-dimensional reconstruction. The final result shows that the new compensation algorithm is better than the original one obviously. This error compensating algorithm can effectively improve the accuracy of three-dimensional measurement.

关键词： Error compensation

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research on Data Exchange Platform for Power Enterprise Based on ESB

Research on Data Exchange Platform for Power Enterprise Base...

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International Conference on Computational Intelligence and Software engineering (CiSE)

作者： Yaling Wang Pishi Sun Wenbin Zhang Zhanfeng Cao Applied Science Private University Beijing China Electromobility Sub-systems Volvo GTT Advanced Technology & Research Göteborg Sweden Electric Power Research Institute Puhua Information Technology Company Limited Beijing China School of Control and Computer Engineering North China Electric Power University Beijing China Faculty of Mechanical Engineering University of Ljubljana Ljubljana Slovenia

Since data sharing mechanism between the various business systems lacks of specification and standardization, information shares hardly and data exchange are inefficient, the paper proposes a data exchange platform for power enterprise based on ESB, which is based on SOA architecture, unified data exchange standards by using XML, used SOAP/HTTP(S) as the data transfer protocol between business systems and services bus and used Web Services as the business system data exchange standard interface. BEA ALSB service bus provides data exchange services for registration, release, information, routing and other functions. Practice has proved that the platform has good flexibility and scalability and can meet the business enterprise system between all kinds of complex data exchange requirements.

关键词： Business Service oriented architecture Marketing and sales Security Routing Databases

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LPV-based reconfigurable chassis design 10

LPV-based reconfigurable chassis design

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2009 10th European control Conference, ECC 2009

作者： Gaspar, Peter Szabo, Zoltan Bokor, Jozsef Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Hungary

ISBN: (纸本)9783952417393

This paper presents the application of Linear Parameter Varying (LPV) methods in the design of integrated vehicle control systems, in which active components are used in co-operation. In the control design besides performance specifications and uncertainties, it is possible to take fault information into consideration. By monitoring suitable scheduling parameters in the LPV control, the reconfiguration of the control systems can be achieved, conflict between performance demands can be avoided and faults (loss in effectiveness) can be handled. © 2009 EUCA.

关键词： Design

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UTM-CM: A Practical control Mechanism Solution for UTM System

UTM-CM: A Practical Control Mechanism Solution for UTM Syste...

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WRI International Conference on Communications and Mobile Computing, CMC

作者： Ying Zhang Fachao Deng Zhen Chen Yibo Xue Chuang Lin School of Information Engineering Beijing University of Science and Technology Beijing China Department of Automation Tsinghua University Beijing China Research Institute of Information Technology Tsinghua University Beijing China Tsinghua National Laboratory for Information Science and Technology Beijing China Department Computer Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781424463275;9780769539898

Since emerged in 2004, Unified Threat Management (UTM) has been used widely to enhance network security protection. Typical UTM device integrates multiple security technologies, therefore its control and management involves various interfaces, message formats, communication protocols, and security policies and so on. Therefore, it is a big challenge to design and implement the configuration and management of security technologies in UTM. To address this issue, this paper proposes a practical UTM control mechanism that features ease-to-use, scalability, interoperability, high-efficiency and reliability. The solution, called UTM-Configuration and Management (UTM-CM), has been implemented and its performance was evaluated.

关键词： control systems Turing machines Protocols Technology management Information security Communication system control Scalability Automatic control National security Protection

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control-oriented Qlpv modeling using TP transformation 10

Control-oriented Qlpv modeling using TP transformation

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2009 10th European control Conference, ECC 2009

作者： Szabo, Zoltan Gaspar, Peter Nagy, Szabolcs Baranyi, Peter Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Hungary

ISBN: (纸本)9783952417393

This paper proposes a framework for selecting affinely parametrized qLPV model structures that facilitates solutions to specific control design tasks. The proposed scheme is an iterative process in every step of which a Tensor Product model transformation is applied to generate a finite element convex polytopic representation in order to obtain a quasi Linear Parameter Varying model. Then the LMI feasibility of a robust control objective is verified, which is closely related to the original control task. This step provides a selection criterion that sorts out the suitable models from a finite set of model candidates generated by the TP method. The proposed modeling scheme is simulated through an academic example. © 2009 EUCA.

关键词： Robust control

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Friction compensation of an aeroelastic wing — A TP model transformation based approach

Friction compensation of an aeroelastic wing — A TP model t...

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International Symposium on Intelligent Systems and Informatics (SISY)

作者： Béla Takarics Patrícia Gróf Péter Baranyi Péter Korondi Department of Mechatronics Optics and Engineering Informatics Budapest University슠of슠Technology슠and슠Economics Budapest Hungary Computer and Automation Research Institute Cognitive Informatics Research Group Budapest Hungary Dep. of Mechatronics Optics and Eng. Informatics Budapest Hungary Dep. of Telecommunications and Media Info. Budapest Univ. of Technology and Economics Budapest Hungary

Various approaches to control aeroelastic wing section with structural nonlinearity emerged in the last years. One of the approaches is based on the Tensor Product (TP) model transformation and the feasibility test of linear matrix inequalities (LMIs) under the Parallel Distributed Compensation framework. The main contribution of this paper is that it extends the previously established qLPV model of the aeroelastic wing section with nonlinear friction. It is proven that the extended model can be exactly described after TP type polytopic decomposition. The qLPV model of the aeroelastic wing section with Coulomb friction was transformed to TP type polytopic model form for which LMI based controller was designed. The designed controller is compared to controllers of other authors dealing with the same problem.

关键词： Friction Mathematical model Force Tensile stress Biological system modeling Numerical models Finite element methods

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Analytic model of a silicon nanowire pH sensor

Analytic model of a silicon nanowire pH sensor

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IEEE International Nanoelectronics Conference (INEC)

作者： Yun Seop Yu Hyung-Kun Park Sung Woo Hwang Doyeol Ahn Department of of Information & Control Engineering Hankyong National University Anseong Gyeonggi South Korea Information and Communication Engineering Department Korea University of Technology and Education Chungnam South Korea Research Center of Time domain Nano functional Devices and Department of Computer & Electronics Engineering Korea University Seoul South Korea Institute of Quantum Information Processing & Systems University of Seoul Seoul South Korea

An analytic model of silicon nanowire (Si-NW) pH sensor is presented. The model is based on the solution of the cylindrical Poisson equation and the nonlinear Poisson-Boltzmann equation in the Si-NW and the electrolyt... 详细信息

ISBN: (纸本)9781424435432

关键词： Silicon Sensor systems Poisson equations Nanobioscience Biosensors Circuit simulation Signal processing Biological system modeling Quantum computing Dielectric constant

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Improved Multidisciplinary Multiobjective Collaborative Optimization Technique Based on NSGA-II Algorithm 1

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IFAC Proceedings Volumes 2010年第25期43卷 139-144页

作者： H. Li Y. Jing S. Zhang V. Ojleska T. Kolemisevska G.M. Dimirovski Key Laboratory of Integrated Automation of Process Industry Ministry of Education Northeastern University Shenyang 110004 P.R. China Northeastern University School of Information Science & Engineering Shenyang 110004 P.R. China SS Cyril and Methodius University School FEIT Institute of ASE Karpos II BB MK-1000 Skopje R. Macedonia Dogus University Computer Eng. and Control Eng. Departments TR-34722 Istanbul Turkey

The multiobjective collaborative optimization (MCO) has been widely adopted in concurrent engineering design as a good multiobjective optimization approach provided the problem of optimization results converging often to a local extremum has been taken care of. It has been demonstrated to yield useful solutions to a wide range of optimization problems under concurrent condition both technical and non-technical ones. A solution strategy for MCO that overcomes this drawback is proposed here on the grounds of genetic NSGA-II algorithm. It is an adaptive heuristic search technique that controls the distances between the individual and system's feasible region during genetic evolution. In the evolving NSGA-II based non-dominated sorting, the individual threshold of infeasibility degree is reduced gradually via genetic evolution and the individual's feasibility capacity is determined by its infeasibility degree and the threshold. It has been applied to a benchmark example of speed reducer design, and the obtained results demonstrate the proposed technique is comparably more efficient and may offer substantial advantages over the gradient-based optimization methods. Copyright © 2010 IFAC

关键词： Collaborative optimization dynamic threshold genetic algorithms multidisciplinary optimization multiobjective optimization

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A two-stage neural network classifier for condition-based maintenance in wireless sensor networks

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International Journal of COMADEM 2010年第2期13卷 17-26页

作者： Ramani, A. McMurrough, C. Middleton, M. Ballal, P. Athamneh, A. Lee, W. Kwan, C. Lewis, F. Automation and Robotics Research Institute University of Texas at Arlington 7300 Jack Newell Blvd. S Fort Worth TX 76118-7115 United States Energy Systems Research Center University of Texas at Arlington 416 S. College St Arlington TX 76019-0048 United States Signal Processing Inc. 13619 Valley Oak Circle Rockville MD 20850-3572 United States Computer Science Engineering University of Texas at Arlington United States Electrical Engineering Department United States

Motor failures in aerospace applications can lead to serious compromises in safety, overall effectiveness, and maintenance costs. In mission critical applications, it is important that motor fault signatures are identified before a failure occurs. It is known that 40% of mechanical failures occur due to bearing faults. Bearing faults can be identified from the motor vibration signatures. Three key contributions are outlined in this paper. First, we develop a low cost test bed for simulating bearing faults in a motor. Second, we develop a wireless sensor module for collection of vibration data from the test bed. Finally, we use a novel two stage neural network to classify various bearing faults using the Generalized Hebbian Algorithm (GHA) in the first stage and a supervised learning vector quantization network (SLVQ) with a self organizing map approach for fault classification in the second stage. © 2010 COMADEM International.

关键词： Wireless sensor networks

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Dynamical modeling and identification of a GnRH neuron

Dynamical modeling and identification of a GnRH neuron

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作者： Csercsik, Dávid Szederkényi, Gábor Hangos, Katalin M. Farkas, Imre Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Budapest Hungary Department of Endocrine Neurobiology Institute of Experimental Medicine HAS Budapest Hungary

ISBN: (纸本)9783902661494

GnRH neurons, as key elements of the reproductive neuroendocrine system, have important central regulating role in the dynamics of the hormonal cycle. A Hodgkin-Huxley type neural model is proposed in this paper, that takes into account up-to-date biological literature data related to ion channels. The proposed neuron model is highly nonlinear in parameters and the evaluation of the objective function is computationally flexpensive, therefore the asynchronous parallel pattern search (APPS) procedure has been used for identification. The model with high number of estimated parameters provides a qualitatively good fit of both voltage clamp and current clamp traces. © 2009 IFAC.

关键词： Neurons

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