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Mediterranean Conference on control and automation

作者： Moayed Almobaied Ibrahim Eksin Mujde Guzelkaya Faculty of Electrical and Electronics Engineering Control and Automation Department Istanbul Technical University Maslak TR-34469 Istanbul Turkey Electrical and Electronics Engineering Control and Automation Department Istanbul Technical University Maslak TR-34469 Istanbul Turkey

ISBN: (纸本)9781467383479

LQR controller is the most popular technique that provides an optimal control law for linear systems among the state space feedback control strategies. However, the conventional LQR controller synthesis is unfortunately an iterative process due to the trial and error approach involved in determining the parameters values of the weighing matrices Q and R. Here, the Big Bang-Big Crunch (BB-BC) optimization algorithm is used that optimizes a time domain fitness function in the design of the state feedback optimal control law and thus avoiding the repeated adjustment process of LQR parameters. In this study, a special performance fitness function that is inversely proportional to the certain time domain step response criteria of a dynamical system is proposed for the optimization procedure. In order to test the performance of the proposed method, firstly a simulation study is done within the MATLAB to stabilize an inverted pendulum on cart. Then, the proposed controller is used in a real time implementation to stabilize a DC-DC boost converter benchmark in the lab. Both MAT-LAB simulations and laboratory experiments demonstrate the effectiveness of the proposed controller.

关键词： Optimization Mathematical model Optimal control Process control Symmetric matrices Time-domain analysis

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Research on adaptive filtering method for electrostatic signals

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AIP Conference Proceedings 2017年第1期1839卷

作者： Hongke Xu Yue Pang Yingmin Yi School of Electronic and Control Engineering Chang’an University Xi’an 710000 China Faculty of Automation and Information Engineering Xi’an University of Technology Xi’an 710048 Shaanxi China

The signal will be inevitably mixed with various types of noise in the process of transmission, which causes the distortion of information in different degree, in order to obtain accurate information, it’s an important work to suppress random noise in the digital signal processing system. This paper mainly studies the adaptive filtering method, using LMS algorithm in adaptive filter (Least mean square LMS algorithm), when the filter starts reading the electrostatic signal, it also can estimate the statistical characteristics of electrostatic signal, adaptive adjust its filter parameters, filtering the electrostatic signal on time, attain the maximum noise suppression, to avoid distortion of information, and to achieve optimal filtering.

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Space-indexed aircraft trajectory tracking 28

Space-indexed aircraft trajectory tracking

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28th Chinese control and Decision Conference, CCDC 2016

作者： Wahid, Mastura Ab Panomruttanarug, Benjamas Drouin, Antoine Mora-Camino, Felix Dept. Aeronautic Faculty of Mechanical Engineering Universiti Teknologi Malaysia Skudai Johor81300 Malaysia Automation Research Group MAIAA Laboratory Ecole Nationale de l'Aviation Civile Toulouse31055 France Department of Control and Instrumentation Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand

ISBN: (纸本)9781467397148

Future Air Traffic Management (ATM) demands that flights to be more efficient while maintaining safety and improving flight predictability. Two major research groups Single European Sky (SESAR) and Next Generation Air Transportation system (NEXTGEN) are progressively researching on the concept of 4D trajectory management which aims to improve flight efficiency by integrating time into the 3D trajectory. Therefore the implementation of time-space based flight guidance controller will be investigated in this paper. Firstly, the reference tracking error equations with respect to the spatial variable is defined and later transformed into a reference tracking error with respect to time. Using nonlinear dynamic inversion, the control law is established to make the aircraft accurately follow 3D+T desired trajectories. A simulation is performed to explore the feasibility of the proposed guidance control law and it was found that the proposed guidance control law is able to accurately follow a 3D+T reference trajectory at the same time follow the overfly time constraint. © 2016 IEEE.

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Joint hierarchical category structure learning and large-scale image classification

arXiv

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arXiv 2017年

作者： Qu, Yanyun Lin, Li Shen, Fumin Lu, Chang Wu, Yang Xie, Yuan Tao, Dacheng Department of Computer Science Xiamen University Xiamen361005 China School of Computer Science and Engineering University of Electric Science and technology of China Chengdu611731 China Institute for Research Initiatives Nara Institute of Science and Technology Japan Research Center of Precision Sensing and Control Institute of Automation Chinese Academy of Sciences Beijing100190 China Centre for Artificial Intelligence Faculty of Engineering and Information Technology University of Technology Sydney 81 Broadway Street UltimoNSW2007 Australia

—We investigate the scalable image classification problem with a large number of categories. Hierarchical visual data structures are helpful for improving the efficiency and performance of large-scale multi-class classification. We propose a novel image classification method based on learning hierarchical inter-class structures. Specifically, we first design a fast algorithm to compute the similarity metric between categories, based on which a visual tree is constructed by hierarchical spectral clustering. Using the learned visual tree, a test sample label is efficiently predicted by searching for the best path over the entire tree. The proposed method is extensively evaluated on the ILSVRC2010 and Caltech 256 benchmark datasets. Experimental results show that our method obtains significantly better category hierarchies than other state-of-the-art visual tree-based methods and, therefore, much more accurate classification. Copyright © 2017, The Authors. All rights reserved.

关键词： Image classification

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A dynamic co-evolution compact genetic algorithm for E/T problem

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IFAC-PapersOnLine 2015年第28期48卷 1439-1443页

作者： Han, Zhonghua Zhu, Yihang Lin, Shuo Faculty of Information and Control Engineering Shenyang Jianzhu University Department of Digital Factory Shenyang Institute of Automation Key Laboratory of networked control system Shenyang China Faculty of Information and Control Engineering Shenyang Jianzhu University Shenyang China

In this paper, a dynamic co-evolution compact genetic algorithm (DCCGA) is proposed for flexible flow shop scheduling problem (FFSP) to minimize the total earliness and tardiness (E/T) penalties. In this new algorithm, a dynamic co-evolution mechanism containing two probabilistic models and a best individual inheritance strategy are integrated into the compact genetic algorithm (CGA). For improving the stability of the evolutionary trend in the evolution processes, the diversity of evolution trend and the convergence speed. Lastly, the experimental results show that, DCCGA outperforms CGA by 11.74% on the problem we study. © 2015

关键词： Genetic algorithms Machine shop practice Co evolution Compact genetic algorithm Earliness tardiness Flexible flow shop Probabilistic models

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Optimizing application layer multicast routing via artificial fish swarm algorithm

Optimizing application layer multicast routing via artificia...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Xuan Ma Rongjun Tang Jingyan Kang Qing Liu Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi'an University of Technology Xi'an China Faculty of Automation and Information Engineering

ISBN: (纸本)9781509040940

In this paper, we propose an approach based on the use of artificial fish swarm algorithm (AFSA) for solving the problem of multicast routing on application layer. Taking delay, stretch, and degree as three optimization objectives, we design the behaviors of artificial fish individual (AF), i.e. moving randomly, preying, following, and use Pareto ranking to evaluate the fitness of AF. The simulation results show that the proposed algorithm is an appropriate method to explore the search space of the complex problem and leads to good solutions in a reasonable amount of time.

关键词： Delays Routing Optimization Fish Network topology Algorithm design and analysis Visualization

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Corrigendum: Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths (Nanophotonics (2019) 8:7 (1263–1270) DOI: 10.1515/nanoph-2019-0112)

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Nanophotonics 2019年

作者： Dharmavarapu, Raghu Izumi, Ken-ichi Katayama, Ikufumi Ng, Soon Hock Vongsvivut, Jitraporn Tobin, Mark J. Kuchmizhak, Aleksandr Nishijima, Yoshiaki Bhattacharya, Shanti Juodkazis, Saulius Centre for NEMS and Nanophotonics (CNNP) Department of Electrical Engineering Indian Institute of Technology Madras Chennai 600036 India Centre for Micro-Photonics Faculty of Science Engineering and Technology Swinburne University of Technology Hawthorn VIC 3122 Australia Melbourne Centre for Nanofabrication ANFF 151 Wellington Road Clayton VIC 3168 Australia Physics Department Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Infrared Microspectroscopy Beamline Australian Synchrotron Clayton VIC 3168 Australia Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok 690041 Russia Far Eastern Federal University Vladivostok 690090 Russia Department of Electrical and Computer Engineering Graduate School of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Institute of Advanced Sciences Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Tokyo Tech World Research Hub Initiative (WRHI) School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

There was a mistake in the grant number used in the recently published paper (DOI: https://***/10.1515/ nanoph-2019-0112. Published Online: 2019-07-09). The text should read: A.K. is grateful for support via the Russian Science Foundation (grant no. 17-19-01325), and R.D. thanks the IIT Madras-Swinburne joint PhD program. © 2019 De Gruyter. All rights reserved.

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Effects of the Slope on the Motion of Spherical RollRoller Robot

Effects of the Slope on the Motion of Spherical RollRoller R...

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IEEE/SICE International Symposium on System Integration

作者： Seyed Amir Tafrishi Mikhail Svinin Esmaeil Esmaeilzadeh Department of Automation and Control Systems University of Sheffield Sheffield UK Mechanical Engineering Department Faculty of Engineering Kyushu University Fukuoka Japan Faculty of Mechanical Engineering University of Tabriz as Emeritus Professor and the Mechanical Engineering Islamic Azad University of Tabriz Tabriz Iran

ISBN: (纸本)9781509033300

In this paper, the effect of the slope on the locomotion of a spherical mobile robot named RollRoller is investigated under simulation. We analyze the robot motion up to 30 degrees of the slope inclination. The analysis is conducted for different conditions depending on the torque input and algorithmic motion planning. Oak fiber is chosen as the material of the inclined surface material, and the spherical shell of the robot is made of plastic. It is shown that RollRoller can move in different physical manners. As the velocity of the driving mass (the core) increases, certain series of jumping impulses take place because of predominant angular momentum. This pattern can support the motion of the sphere with accelerating climb in vertical axis. However, algorithmic-base position control of the RollRoller can prevent certain circular jumping impulses.

关键词： Robots Electron tubes Mathematical model Torque Force Logic gates Actuators

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Construction of convex liftings based on halfspace representation

Construction of convex liftings based on halfspace represent...

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American control Conference

作者： N. A. Nguyen S. Olaru P. Rodriguez-Ayerbe M. Gulan the Institute for Design and Control of Mechatronical Systems Johannes Kepler University Linz Austria the Laboratory of Signals and Systems (L2S UMR CNRS 8506) CentraleSupélec-CNRS-Université Paris Sud 3 rue Joliot Curie Plateau de Moulon 91192 Gif-sur-Yvette France. Sorin. Olaru the Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology Bratislava Slovakia

ISBN: (纸本)9781509045839

This paper presents a new algorithm to construct convex lifting for a given polyhedral partition whenever it exists. This algorithm exclusively relies on the halfspace representation of the regions in the respective partition. Also, this algorithm is applicable for the general polyhedral partitions of polyhedra, and thus overcomes the limitation on the polytopic partitions of the existing algorithm based on the vertex representation. Finally, the importance of the proposed algorithm is clarified via some numerical examples, in particular in implementation of piecewise affine controllers. Accordingly, the convex lifting concept is shown to be useful to both avoid storing the state-space partition and to facilitate the online evaluation.

关键词： whenever exists algorithm

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Delay Systems with Meromorphic Functions Design

Delay Systems with Meromorphic Functions Design

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IEEE International Conference on control and automation

作者： Roman Prokop Jiri Korbel Libor Pekar Department of Mathematics Tomas Bata University in Zlin Faculty of Applied Informatics Department of Computer and Communication Systems Tomas Bata University in Zlin Faculty of Applied Informatics Department of Automation and Control Engineering Tomas Bata University in Zlin Faculty of Applied Informatics

ISBN: (纸本)9781509017393

The paper is focused on systems with delay terms at the left (and the right) side of differential equations. Analysis and synthesis of delay systems can be conveniently studied through a special ring of RQ-meromorphic functions. The control methodology is based on a solution of Diophantine equations in this ring. Final controllers result in the Smith predictor like structure. controller parameters are tuned through a pole-placement problem as a desired multiple root of the characteristic closed loop equation. The methodology is illustrated by a stable second order transfer function with a dead-time term. Then the paper brings an autotuning method as a combination of biased-relay feedback estimation and the proposed algebraic control design. The developed approach is illustrated by examples in the Matlab and Simulink environment.

关键词： Delay systems Rings Diophantine equation Autotuning Relay experiment

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