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Development of universal FMC carrier card based on PXI Express

Development of universal FMC carrier card based on PXI Expre...

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IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON)

作者： Wang Liu Yanlin Ren David He Liyan Qiao Dept. of Automatic Test and Control Harbin Institute of Technology Harbin P.R.China Dept. of Mechanical and Industrial Engineering University of Illinois at Chicago Chicago USA

ISBN: (纸本)9781509014972

With the increasing testing requirements and costs, the flexibility of equipment in use is becoming more and more important because it can satisfy the test request of different tasks. The emergence of the FPGA Mezzanine Card (FMC) standard allows us to re-design I/O interfaces with only FPGA's hardware kept unchangeable. PXI-Express (PXIe) based universal FMC carrier card is developed to apply on data acquisition and storage system in this paper. The universal carrier card integrates 1GB DDR2 SDRAM and 32MB SRAM memory to provide data caches for both of high-speed data and low speed application. Also, the carrier card provides high-speed and reconfigurable digital I/O interface with the FMC connector. As the extension of PCI Express in the instrument field, PXIe technologies are capable of high speed data transmission between the card and host's memory with DMA. This paper implements the method on more efficient data transmission, namely the Peer-to-Peer. Due to the fact that data can be transferred from one card to another without utilizing system memory using the Peer-to-Peer method, the data transmission delay can be reduced and the system bandwidth can be improved. In order to test the performances of the FMC universal carrier card in high-speed data acquisition, the universal carrier card is connected with a high-speed ADC (I/O) FMC mezzanines module. The ADC module integrates two channel ADCs providing 1.5GSa/s dual-channel sampling rate, 3GSa/s single-channel sampling rate and 8-bit of resolution. Moreover, the writing and reading speeds by Peer-to-Peer transmission between two FMC universal cards have been verified up to 846.6MB/s and 789.1MB/s respectively. The results show that the developed FMC universal carrier card can establish excellent connection between FPGA and I/O mezzanine. Meanwhile, the FMC card meets the data transmission requirement well between data acquisition and storage with Peer-to-Peer and high-speed data cache.

关键词： Field programmable gate arrays Standards Pins SDRAM Data acquisition

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Sample gathering problem for different robots with limited capacity

Sample gathering problem for different robots with limited c...

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International Conference on system Theory, control, and Computing (ICSTCC)

作者： Marius Kloetzer Cristian Mahulea Adrian Burlacu Dept. of Automatic Control and Applied Informatics Technical University of Iasi Romania Aragón Institute for Engineering Research University of Zaragoza Spain

ISBN: (纸本)9781509027217

In this paper we consider the problem of using mobile robots to collect a set of samples that are arbitrarily distributed in the environment. The robots are not necessarily identical and each one has a finite capacity, being able to transport only a given number of samples at each time. Furthermore, the number of transporting routes for robots can be also upper bounded. The problem is addressed in this paper by using a mathematical programming approach, namely developing a Mixed Integer Linear Program (MILP). The solution provides the optimal assignment of robots to samples, with respect to gathering all samples in a storage area in minimum time. The method is supported through simulation examples implemented in Matlab by using the CPLEX MILP solver.

关键词： Robot kinematics Mobile robots Delays Collision avoidance Resource management Vehicles

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Optimal distributed control for platooning via sparse coprime factorizations

Optimal distributed control for platooning via sparse coprim...

引用

American control Conference (ACC)

作者： Şerban Sabău Cristian Oară Sean Warnick Ali Jadbabaie Electrical and Computer Engineering Dept. Stevens Institute of Technology Hoboken NJ Automatic Control Dept. University “Politehnica” Bucharest Faculty of the Computer Science Department Brigham Young University Electrical and Systems Engineering Dept. University of Pennsylvania

We introduce a novel distributed control architecture for disturbances attenuation in heterogeneous platoons of linear and time-invariant autonomous agents that inherits the performance achievable by the leader-follower control policies. We provide a Youla-like parameterization for the class of all distributed controllers such that the sparsity constraints are imposed on the controllers' left coprime factors, outlining a new concept of structural constraints in distributed control. The proposed scheme lends itself to optimal controller design via norm based costs, it guarantees string stability and completely eliminates the accordion effect from the behavior of the platoon. The distributed controller is proven to attain global optimality for heterogeneous platoons and ℋ 2 costs and can easily reconfigure such as to remain optimal during formation merging/exiting maneuvers. The scheme is amenable to a GPS time base synchronization mechanism, allowing for the exact compensation of the time delays induced by the wireless communications.

关键词： Vehicles Standards Decentralized control Stability analysis Linear systems Transfer functions Electronic mail

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Inexpensive robot for experimental validation of planning and control algorithms

Inexpensive robot for experimental validation of planning an...

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International Conference on system Theory, control, and Computing (ICSTCC)

作者： José Lamarca Marius Kloetzer Cristian Mahulea Dept. of Computer Science and Systems Engineering University of Zaragoza Spain Dept. of Automatic Control and Applied Informatics Technical University of Iasi Romania Aragón Institute for Engineering Research University of Zaragoza Spain

ISBN: (纸本)9781509027217

This paper describes the structure of a mobile robot suitable for laboratory experiments. The robot is developed with the ideas of minimizing the production costs and of executing motion commands received from an external computer that runs the (possible computational intensive) planning algorithms. The proposed system is a differential wheeled robot built based on an Arduino platform, it has a small physical size and it is capable of wireless communication. These characteristics make it useful for validating planning algorithms for mobile robots in computer-guided laboratory experiments, while lowering the expenses required by such a setup. Moreover, in order to compensate the communication delay between the central computer and the robot, an estimation algorithm is implemented on the robot for obtaining a smoother motion.

关键词： Mobile robots Wheels Computers Planning Trajectory Pins

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Analysis of Fault Characteristics of Half-wavelength AC Transmission Lines

Analysis of Fault Characteristics of Half-wavelength AC Tran...

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IEEE Power and Energy Society General Meeting

作者： Teng Feng Xinzhou Dong Bin Wang Shenxing Shi Shuxin Luo Aoyu Lei Lanxi Tang State Key Lab. of Control and Simulation of Power System and Generation Equipment Dept. of Electrical Engineering Tsinghua University

ISBN: (纸本)9781509041695

Half-wavelength AC transmission (HWACT) is an ultra-long distance AC transmission technology, whose electrical distance is close to half-wavelength at the system power frequency. The countries with a large territory have a big demand for HWACT. The fault characteristics of an HWACT line can be different from those of a conventional transmission line. So it is necessary and significant to analyze the fault characteristics of an HWACT line. In this paper, the influence of fault distances and fault resistances on the fault voltages and currents of two buses is analyzed after different types of faults occur on an HWACT line. And the analysis results are compared with the simulation results from EMTP.

关键词： Fault characteristics Fault distance Fault resistance Fault type Half-wavelength AC transmission fault resistance half-wave AC power transmission faults electrical distance power frequency Electromagnetic Transients Program fault signature Analysis

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Current-stress reduction of the neutral inductor in a rectifier with two outputs

Current-stress reduction of the neutral inductor in a rectif...

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IEEE Energy Conversion Congress and Exposition

作者： Wenlong Ming Qing-Chang Zhong Dept. of Automatic Control and Systems Engineering The University of Sheffield Sheffield S1 3JD UK Dept. of Electrical and Computer Engineering Illinois Institute of Technology Chicago IL 60616 USA

ISBN: (纸本)9781509007387

In this paper, a recently-reported single-phase rectifier with two outputs (RECTO) is further improved to reduce the current stress of the neutral inductor in the rectifier. The reduction is achieved by moving the neutral inductor away from the path of the grid current. As a result, the inductor only carries the differential current of the dual loads. Since the maximum value of the differential current is much smaller than that of the grid current, the current stress of the neutral inductor can be significantly reduced, and the size of the inductor becomes much smaller, which helps improve the power density of the RECTO. In theory, the current stress can be reduced by at least three times and the inductor size by at least nine times. It is worth noting that the current stress of the switches and the other features of the RECTO, e.g., operation principles, independent DC outputs and unity power factor, are not affected. Comparative experimental results are presented to demonstrate the reduction.

关键词： Inductors Legged locomotion Stress Capacitors Voltage control Reactive power Integrated circuit modeling inductors Biped locomotion integrated circuit modelling Voltage regulation Reactive power Capacitors Rectifiers differential current Stress (mechanics) Stressing

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Anomaly detection in analog circuits using Support Vector Data Description

Anomaly detection in analog circuits using Support Vector Da...

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International automatic Testing Conference, AUTOTESTCON

作者： Yang Yu Yueming Jiang Yanmei Lv Yongxue Ma Xiyuan Peng Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China Machine Engineering College Machine Technology Research Institute Shijiazhuang China

With the rapid development of electronic technology, electronic systems are widely used in various fields, and the reliability requirement for electronic systems is also increasing. Many test and diagnosis methods have been proposed. However, few methods can be used to recognize the intermediate anomaly state between normal and fault state. To solve the above problem, this paper presents an anomaly detection method based on Support Vector Data Description (SVDD) for analog circuits. Simulation and experiments have verified the effectiveness.

关键词： Circuit faults Multiresolution analysis Wavelet transforms Analog circuits Mathematical model Feature extraction

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Performance analysis and controller improvement for linear systems with (m,k)-firm data losses

Performance analysis and controller improvement for linear s...

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European control Conference

作者： E.P. van Horssen A.R. Baghban Behrouzian D. Goswami D. Antunes T. Basten W.P.M.H. Heemels the Control System Technology group Dept. of Mechanical Engineering and the Electronic Systems group Dept. of Electrical Engineering Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands

ISBN: (纸本)9781509025923

This paper describes methods for the analysis and design of control applications with real-time constraints, which allow data losses in the sensing-to-actuation path governed by the property of (m, k)-firmness. An automaton consisting of open- and closed-loop dynamics and a graph representing (m, k)-firmness defines the overall system behavior as a constrained switched linear system. The worst-case quadratic cost is analyzed for a given optimal linear quadratic regulator design. A simple analytic upper bounding method is compared to a method based on solving a (computationally more complex) semidefinite program. Furthermore, control design methods for performance improvement for the worst case are presented. A known LMI-based method is compared to an iterative controller improvement scheme inspired by ideas from dynamic programming. Conservatism and computational effort of the methods are discussed. A numerical example is used for illustration.

关键词： Performance analysis controller improvement linear systems

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OWC on-shore wave power plants modeling and simulation

OWC on-shore wave power plants modeling and simulation

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IEEE International Conference on Emerging Technologies and Innovative Business Practices for the Transformation of Societies (EmergiTech)

作者： A.J. Garrido I. Garrido J. Lekube M. de la Sen E. Carrascal Automatic Control Group Department of Automatic Control and Systems Engineering University of the Basque Country (UPV/EHU) Bilbao Spain Dept. Aut. Control and Systems Eng. University of the Basque Country (UPV/EHU) Bilbao Spain Department of Electricity and Electronics University of the Basque Country (UPV/EHU) Spain Automatic Control Group - ACG University of the Basque Country (UPV/EHU) Spain

ISBN: (纸本)9781509007073

The Spanish Renewable Energies Plan (SREP) for 2011-2020 and the European Energy Road Map are promoting the use of renewable sources as the best way to avoid the undesired global warming, and in particular, the use of Ocean Energy. Within the different types of on-shore wave-based ocean energy devices, Oscillating Water Column (OWC) converters are one of the widely used ones. An OWC device is basically composed by a capture chamber with a turbo-generator module attached to it. This paper presents the modeling and simulation of OWC on-shore wave power plants. The results are particularised for the case of the Mutriku's power plant and then validated by means of experimental data.

关键词： Turbines Mathematical model Conferences Business Torque Data models

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Considerations regarding security issues impact on systems availability

Considerations regarding security issues impact on systems a...

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International Conference on Electronics, Computers and Artificial Intelligence (ECAI)

作者： Emil Pricop Sanda Florentina Mihalache Nicolae Paraschiv Jaouhar Fattahi Florin Zamfir Automatic Control Computers & Electronics Department Petroleum-Gas University of Ploiesti Ploiesti Romania Dept. of Computer Science & Software Engineering Université Laval Québec Canada

control systems behavior can be analyzed taking into account a large number of parameters: performances, reliability, availability, security. Each control system presents various security vulnerabilities that affect in lower or higher measure its functioning. In this paper the authors present a method to assess the impact of security issues on the systems availability. A fuzzy model for estimating the availability of the system based on the security level and achieved availability coefficient (depending on MTBF and MTR) is developed and described. The results of the fuzzy inference system (FIS) are presented in the last section of the paper.

关键词： Security Reliability control systems Wireless sensor networks Fuzzy logic Safety Network topology

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