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第五届国际自动控制联合会分数阶导数及其应用会议

作者： Milan R.Rapai Alessandro Pisano Automation and Control Systems Department University of NoviSad Novi Sad Serbia University of Cagliari Dept. of Electrical and Electronic Engineering (DIEE) Cagliari Italy

A gradient-based algorithm for the on-line continuous estimation of the commensurate order in linear fractional order processes is presented.A key aspect of the proposed methodology is the use of appropriate variable-... 详细信息

关键词： Adaptive On-Line Estimation Of The Commensurate Order In Fractional Order Systems

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BLOCK-BASED DECISION-FEEDBACK EQUALIZERS WITH REDUCED REDUNDANCY

BLOCK-BASED DECISION-FEEDBACK EQUALIZERS WITH REDUCED REDUND...

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European Signal Processing Conference

作者： Wallace A. Martins Paulo S. R. Diniz Federal Center for Technological Education Dept. of Control and Automation Industrial Eng. Federal University of Rio de Janeiro Depart. of Electronics and Computer Eng. Electrical Engineering Program

ISBN: (纸本)9781467310680

In recent years many works related to the design of block-based transceivers have been published. The main target of this research activity is to optimize the use of the spectral resources in broadband transmissions. A possible way to address this problem is to reduce the amount of redundancy required by block transmissions to avoid interblock interference. An efficient solution is to employ zero-padding zero-jamming (ZP-ZJ) transceivers, which allow the transmission with reduced redundancy. ZP-ZJ systems have been successfully employed in the context of linear transceivers. This paper shows how the ZP-ZJ concept can be applied in decisionfeedback equalization. Some performance analyses based on the resulting mean-square error and error probability of symbols are included to show the possible degrading effects of the reduction in the amount of redundancy. Nevertheless, simulation results illustrate that data throughput and average mutual information between transmitted and estimated symbols can be enhanced significantly without affecting the system performance, for a certain level of signal-tonoise ratio at the receiver.

关键词： Block DFE Reduced redundancy Throughput redundancy Transceivers Research Activities System performance Signs and symbols feedback equalizer data throughput Error probability Transmissions broadband

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Fault-tolerant Audio and Video Bridging (AVB) Ethernet: A novel method for redundant stream registration configuration

Fault-tolerant Audio and Video Bridging (AVB) Ethernet: A no...

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Institute of Electrical and Electronics Engineers International Conference on Emerging Technologies & Factory automation

作者： Oliver Kleineberg Peter Frohlich Donal Heffernan Hirschmann Automation & Control GmbH Electronic and Computer Engineering Dept. University of Limerick

ISBN: (纸本)9781467347358

The Audio and Video Bridging (AVB) technology equips Ethernet with Real-Time characteristics, based on standards developed by IEEE 802.1. In 2011, the IEEE 802,1 AVB Task group completed the first generation of AVB Standards, and is currently starting standardization work on AVB Generation 2, aimed at Industrial automation & control networks, as well as Automotive networks. One aspect of this standardization effort is to adapt AVB stream reservation mechanisms to operate with industrial-standard fault tolerance technologies. This paper proposes a method to allow AVB to be used flexibly with different use-cases and different stream configuration mechanisms to achieve fault-tolerance. The method has been verified through simulation and has been proposed to the AVB task group for inclusion into the 2nd Generation AVB standards.

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controller Design for Fractional Order Chaotic Lu System

Controller Design for Fractional Order Chaotic Lu System

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American control Conference

作者： Elham Amini Boroujeni Mohammad Javad Yazdanpanah Hamid Reza Momeni Automation and Instruments Lab. Electrical Engineering Dept. Tarbiat Modares University Tehran Iran Control & Intelligent Processing Center of Excellence College of Engineering School of ECE University of Tehran P.O. Box 14395/515 Tehran Iran

ISBN: (纸本)9781457710957

In this paper, two synthesis approaches are proposed to stabilize the fractional order chaotic Lu system. In the first approach, the equilibrium point of the system is stabilized locally while the second approach is based on the Lyapunov technique which guarantees global asymptotically stability of the origin. Simulation results demonstrate validity and effectiveness of the proposed approaches.

关键词： Chaos Asymptotic stability Trajectory Stability analysis Lyapunov methods Steady-state

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2012年 7366 LNAI卷 VI页

作者： Zhang, Huaguang Hussain, Amir Liu, Derong Wang, Zhanshan Northeastern University College of Information Science and Engineering Shenyang 110004 China University of Stirling Dept. of Computing Science and Mathematics Stirling FK9 4LA United Kingdom Institute of Automation Chinese Academy of Sciences State Key Laboratory of Managment and Control for Complex Systems Beijing 100190 China

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Adaptive Variable Selection Using Nonnegative Garrote with Application to Soft Sensor and Fault Detection

Adaptive Variable Selection Using Nonnegative Garrote with A...

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第23届过程控制会议

作者： Jian-guo Wang Chang-Chun Pan Shi-Shang Jang David Shan-Hill Wong Shyan-Shu Shieh Chan-Wei Wu School of Mechatronical Engineering and Automation Shanghai University and Shanghai Key Labof Power Station Automation Technology Shanghai 200072 China Department of Automation and Key Laboratory of System Control and Information Processing Ministry ofEducation of China Shanghai Jiao Tong University Shanghai 200240 China Department of Chemical Engineering National Tsing-Hua University Hsin-Chu 30013 Taiwan Department of Occupational Safety and Hygiene Chang Jung University Tainan 71101 Taiwan Energy & Air Pollution Control Section New Materials R&D Dept. China Steel Corporation Kaohsiung 81233 Taiwan

ring normal operations, response or quality variables of a process will follow a input-output relation that depend on certain key sensor variables. A soft-sensor with limited model size can be developed. When the process enters into a “faulty” state, the structure, of this model may change. Moreover, disturbance that is not reflected by sensor outputs may also be present. In this paper, we introduce a recursive soft-sensor modeling algorithm which employs a nonnegative garrote (NNG) variable selection procedure. This model can be used for both prediction, and detection of structural model change and the emergence of disturbance. The advantages of the proposed method were demonstrated by a simulation example and an industrial application to temperature prediction of a blast furnace hearth.

关键词： NNG(nonnegative garrote) Soft sensor Fault detection

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Application of hybrid method to the influence of bearing number on elliptic gas bearing system

Application of hybrid method to the influence of bearing num...

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2011 International Conference on Fluid Power and Mechatronics, FPM 2011

作者： Wang, Cheng-Chi Chen, Shin-Yong Jang, Ming-Jyi Liao, Te-Tan Dept. of Mechanical Engineering Far East University Tainan Taiwan Dept. of Automation and Control Engineering Far East University Tainan Taiwan

ISBN: (纸本)9781424484522

This paper employs a hybrid numerical method combining the differential transformation method (DTM) and the finite difference method (FDM) to analyze the nonlinear dynamic behavior of a rigid rotor supported by an elliptic gas bearing system (EGBS). The results obtained for the orbits of the rotor center are in good agreement with those obtained using the traditional FDM approach. Moreover, the results presented summarize the changes which take place in the dynamic behavior of the EGBS as the bearing number are increased over the range 2.0 5.0, and therefore provide a useful insight into the nonlinear dynamics of the bearing system. © 2011 IEEE.

关键词： Mathematical transformations

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Real time simulation study on backstepping sliding mode control of permanent magnet synchronous motor

Real time simulation study on backstepping sliding mode cont...

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2011 International Conference on Electrical Machines and Systems, ICEMS 2011

作者： Qian, Yang Weiguo, Liu Yongping, Huang Dept. of Automation Northwestern Polytechnical University China Dept. of Electrical and Control Engineering Xi'an University of Science and Technology China

ISBN: (纸本)9781457710445

A novel nonlinear backstepping sliding mode controller is designed for improving the speed dynamitic tracking performance of permanent magnet synchronous motor (PMSM) control system, and stability of the controller is proved at one time. The PMSM system is divided into three first-order subsystems according to backstepping algorithm, exponential reaching law is adopted to derive the sliding mode (SM) surface equation, Lyapunov function is constructed to ensure the global asymptotic convergence of the controller. A second-order filter is adopted to adjust the given reference speed, suppress speed overshoot in the starting course of PMSM and obtain the first-order differential & second-order differential of reference speed simultaneously. In order to verify the effectiveness of the given backstepping sliding mode speed controller, hardware in loop (HIL) experiment of PMSM is achieved based on dSPACE and external driving circuits. The Simulink simulation and experiment results showed that this backstepping sliding mode controller can guarantee fast speed dynamic response and strong robustness of PMSM system under the condition of variable reference speed and load torque. © 2011 IEEE.

关键词： Backstepping

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Evaluations of Different Simultaneous Localization and Mapping (SLAM) Algorithms

Evaluations of Different Simultaneous Localization and Mappi...

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Annual Conference on IEEE Industrial Electronics Society

作者： Gurkan Tuna Kayhan Gulez V. Cagri Gungor T. Veli Mumcu Trakya University Department of Computer Programming Yildiz Technical University Electrical-Electronics Faculty Control and Automation Eng. Dept. Bahcesehir University Faculty of Engineering Department of Computer Engineering

ISBN: (纸本)9781467324199

Simultaneous Localization and Mapping (SLAM) algorithms with multiple autonomous robots have received considerable attention in recent years. In general, SLAM algorithms use odometry information and measurements from exteroceptive sensors of robots. The accuracy of these measurements and the performance of the corresponding SLAM algorithm directly affect the overall success of the system. This paper presents comparative performance evaluations of three Simultaneous Localization and Mapping (SLAM) algorithms using Extended Kalman Filter (EKF), Compressed Extended Kalman Filter (CEKF) and Unscented Kalman Filter (UKF). Specifically, it focuses on their SLAM performances and processing time requirements. To show the effect of CPU power on the processing time of SLAM algorithms, two notebooks and a netbook with different specifications have been used. Comparative simulation results show that processing time requirements are consistent with the computational complexities of SLAM algorithms. The results we obtained are consistent with the CPU power tests of independent organizations and show that higher processing power decreases processing time accordingly. The results also show that CEKF is more suitable for outdoor SLAM applications where there are a lot of natural and artificial features.

关键词： Simultaneous localization and mapping Navigation Visualization Power measurement Estimation MONOS devices

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Determining biochemical reaction network structures for kinetic polynomial models with uncertain coefficients

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AIP Conference Proceedings 2012年第1期1479卷 2427-2430页

作者： Gábor Szederkényi Z. A. Tuza Katalin M. Hangos Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Faculty of Information Technology Pázm Hungary Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Dept. of Electrical Engineering and Informatio Hungary

A numerical method is proposed in this paper for the computation of dense and sparse reaction network structures for kinetic polynomial models with uncertain parameters represented as intervals. The problem is traced ...

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