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IEEE Annual Conference on Decision and control

作者： Jiahu Qin Jie Sheng Huijun Gao Wei Xing Zheng Department of Automation University of Science and Technology of China Hefei 230027 P. R. China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150001 P. R. China School of Computing Engineering and Mathematics Western Sydney University Sydney NSW 2751 Australia

ISBN: (纸本)9781479978878

This paper aims to perform the convergence analysis for a group of linear multi-agent systems with time delay and communicating over arbitrary network topology. It is proved that within the allowable delay bound, all the agents within each closed strong component reach synchronization, while all the other agents outside the closed strong components converge to the dynamic convex hull spanned by the agents in the closed strong components. The delay bound is calculated by the method of semi-discretization, which is also useful in searching for an optimal feedback control with the fastest convergence rate for a certain time delay. A simulation example is given to illustrate the validity of the obtained results.

关键词： coordinated control Network topology Agents system clock optimal feedback control Converge convex hull COMMUNICATING

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Development of a Hybrid-driven Autonomous Underwater Glider with a Biologically Inspired Motion control System

Development of a Hybrid-driven Autonomous Underwater Glider ...

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Asian control Conference

作者： Khalid Isa M. R. Arshad Embedded Computing System Research Group (EmbCos) Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia (UTHM) Underwater Control and Robotics Group (UCRG) School of Electrical and Electronic Engineering Engineering Campus Universiti Sains Malaysia (USM)

ISBN: (纸本)9781479978632

This paper presents prototype development of a hybrid-driven autonomous underwater glider with a biologically inspired motion control system. The hybrid-driven glider with an independently controllable wings and a rudder was developed to overcome the drawback of a typical buoyancy-driven underwater glider in terms of speed and maneuverability. However, it is difficult to control the glider due to the high nonlinear and time-varying dynamic behavior of the glider;uncertainties in hydrodynamics coefficients;and disturbances by water currents. Thus, a robust and reliable bio-inspired controller algorithm has been designed. The controller algorithm has been designed to mimic a human innate control mechanism, which is known as homeostatic controller. The performance of the homeostatic controller of the hybrid-driven glider has been analyzed via simulation and experimental. From the simulation result, our homeostatic controller achieves better performance compared to the LQR, MPC, NN and neuroendocrine controller approaches. Furthermore, validation analysis of the homeostatic controller performance between the simulation and experimental results have shown very satisfactory performance.

关键词： Hybrid-driven underwater glider Homeostatic controller Motion control Homeostasis

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Space QUEST mission proposal: Experimentally testing decoherence due to gravity

arXiv

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arXiv 2017年

作者： Joshi, Siddarth Koduru Pienaar, Jacques Ralph, Timothy C. Cacciapuoti, Luigi McCutcheon, Will Rarity, John Giggenbach, Dirk Lim, Jin Gyu Makarov, Vadim Fuentes, Ivette Scheidl, Thomas Beckert, Erik Bourennane, Mohamed Bruschi, David Edward Cabello, Adan Capmany, Jose Carrasco-Casado, Alberto Diamanti, Eleni Dusek, Miloslav Elser, Dominique Gulinatti, Angelo Hadfield, Robert H. Jennewein, Thomas Kaltenbaek, Rainer Krainak, Michael A. Lo, Hoi-Kwong Marquardt, Christoph Milburn, Gerard Peev, Momtchil Poppe, Andreas Pruneri, Valerio Renner, Renato Salomon, Christophe Skaar, Johannes Solomos, Nikolaos Stipčević, Mario Torres, Juan P. Toyoshima, Morio Villoresi, Paolo Walmsley, Ian Weihs, Gregor Weinfurter, Harald Zeilinger, Anton Zukowski, Marek Ursin, Rupert Institute for Quantum Optics and Quantum Information Austrian Academy of Sciences Boltzmanngasse 3 ViennaA-1090 Austria Centre for Quantum Computation & Communication Technology Department of Physics University of Queensland St LuciaQLD4072 Australia European Space Agency Keplerlaan 1 - P.O. Box 299 AG Noordwijk ZH2200 Netherlands Department of Electrical and Electronic Engineering University of Bristol Merchant Venturers Building Woodland Road BristolBS8 1UB United Kingdom German Aerospace Center Institute of Communications and Navigation Muenchner Strasse 20 Wessling82234 Germany Institute for Quantum Computing Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada Institute for Quantum Computing Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Precision Engineering Department Fraunhofer IOF Albert-Einstein-Straße 7 Jena07745 Germany Physics department Stockholm University Albanova universitetscentrum Universitetsvägen 10 Stockholm114 18 Sweden York Centre for Quantum Technologies Department of Physics University of York HeslingtonYO10 5DD United Kingdom University of Seville SevillaE-41012 Spain iTEAM Research Institute Universitat Politcnica de Valencia Valencia46022 Spain 4-2-1 Nukui-Kitamachi Koganei Tokyo184-8795 Japan CNRS Universite Pierre et Marie Curie Paris75005 France Department of Optics Faculty of Science Palacky University 17. Iistopadu 12 Olomouc772 00 Czech Republic Max Planck Institute for the Science of Light Bldg. 24 Günther-Scharowsky Str. 1 ErlangenD-91058 Germany Piazza Leonardo da Vinci 32 Milano20133 Italy School of Engineering University of Glasgow GlasgowG12 8LT United Kingdom Vienna Center of Quantum Science and Technology Faculty of Physics University of Vienna Boltzmanngasse 5 ViennaA-1090 Austria NASA Goddard Space Flight Center GreenbeltMD20771 United States Center for Quantum Information and Quantum Con

Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum properties, such as entanglement, may exhibit entirely different behavior to purely classical systems. By measuring this effect or lack thereof, we can test the hypotheses behind several such models. For instance, as predicted by Ralph and coworkers [T C Ralph, G J Milburn, and T Downes, Phys. Rev. A, 79(2):22121, 2009;T C Ralph and J Pienaar, New Journal of Physics, 16(8):85008, 2014], a bipartite entangled system could decohere if each particle traversed through a different gravitational field gradient. We propose to study this effect in a ground to space uplink scenario. We extend the above theoretical predictions of Ralph and coworkers and discuss the scientific consequences of detecting/failing to detect the predicted gravitational decoherence. We present a detailed mission design of the European Space Agency's (ESA) Space QUEST (Space - Quantum Entanglement Space Test) mission, and study the feasibility of the mission scheme. Copyright © 2017, The Authors. All rights reserved.

关键词： Quantum entanglement

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Anti-windup and the preservation of robustness against structured norm-bounded uncertainty

Anti-windup and the preservation of robustness against struc...

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作者： Morales, R.M. Li, G. Heath, W.P. Control Systems Research Group Department of Engineering University of Leicester LeicesterLE1 7RH United Kingdom School of Engineering Computing and Mathematics University of Exeter ExeterEX4 4QF United Kingdom Control Systems Centre School of Electrical and Electronic Engineering University of Manchester ManchesterM13 9PL United Kingdom

Anti-windup systems are modified control structures, which are designed to compensate against the detrimental effects of saturations. This manuscript considers primarily the stability robustness of two well-known anti-windup structures. Sufficient conditions for the stability robustness of the anti-windup structures and optimal robustness against structured norm-bounded plant uncertainty are found. A saturated loop is said to be optimally robust if the constrained loop is as robust as its unconstrained counterpart. The robustness condition is shown to be less conservative than existing results on additive uncertainty. Although it is known that the conventional internal model control provides optimal robustness against additive unstructured uncertainty, this is not the case against the more general uncertainty structure. Copyright © 2013 John Wiley & Sons, Ltd.

关键词： Robust control

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Entrainment Analysis in Goodwin-Type Nonlinear Oscillator Networks Driven by External Periodic Signals

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SICE Journal of control, Measurement, and System Integration 2014年第6期7卷 337-346页

作者： Dinh-Hoa Nguyen Shinji Hara Department of Automatic Control School of Electrical Engineering Hanoi University of Science and Technology Department of Information Physics and Computing Graduate School of Information Science and Technology The University of Tokyo

In this paper, we present a systematic approach based on harmonic balance method to study the entrained oscillations in a class of Goodwin-type oscillator networks forced by external periodic signals consisting of high order harmonics. First, a necessary condition and a conjecture for entrainment of network oscillations are presented. Next, the authors reveal an estimation for the profile of entrained oscillations in one situation and the monotone dependence of the amplitude and phase shift of entrained oscillations to the external input in other contexts. The theoretical results are then illustrated through some examples including a practical model for circadian rhythm in Neurospora crassa.

关键词： measurement control systems and information system integration industrial applications

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Maximum Likelihood Estimator, FFT Estimator and Cramer-Rao Bounds of the Laser Doppler Frequency The effect of a particle trajectory through the measurement volume

Maximum Likelihood Estimator, FFT Estimator and Cramer-Rao B...

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IEEE International Instrumentation and Measurement Technology Conference

作者： Lu Zhang Janusz Kulon Yong Yan School of Computer and Control Engineering North China Electric Power University 2 Beinong Road Beijing 102206 China Faculty of Computing Engineering and Science University of South Wales Pontypridd CF37 1DL UK School of Engineering and Digital Arts University of Kent Canterbury Kent CT2 7NT UK

ISBN: (纸本)9781479961153

This paper addresses the problem of estimating the Doppler frequency in Laser Doppler Velocimetry (LDV) systems by taking into account the effect of the particle trajectory via the measurement volume. The dependency of the burst length on the Cramer-Rao lower bound (CRLB) and the Doppler frequency estimation is investigated by employing the 2D model of the Doppler Burst Signal with the Gaussian envelope. The Maximum Likelihood Estimator (MLE) equations are solved for estimates of the Doppler frequency for LDV systems operating in one particle scattering mode. The numerical examples show the performance of the MLE and FFT with various parameter configurations compared with the derived CRLB. The numerical results confirm the validity of the analysis in terms of the relative effect of the particle trajectory, relative measurement time, size of the volume and signal-to-noise ratio on the accuracy of the estimation.

关键词： Cramer-Rao bound Laser Doppler Velocimetry frequency estimation maximum likelihood estimation Fast Fourier Transform

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Tracking and statistics method based on LBTM for traffic car flow

Lecture Notes in Control and Information Sciences

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Lecture Notes in control and Information Sciences 2014年 452卷 261-275页

作者： Liu, Jian Gong, Zhiheng Wang, Xin Gao, Enyang Xu, Zexian College of Information and Control Engineering Shenyang Jianzhu University Shenyang 110168 China School of Computing National University of Singapore Singapore 117417 Singapore

ISBN: (纸本)9783642363849

Since limitations have been encountered in the achievement of the traditional targets tracking algorithms, a novel tracking method based on local block-graphs targets matching is proposed. Car flow tracking is applied to prove the effectiveness of the method. First, the images containing the targets are captured by the video frames to get the targets block-graphs. Second, the block-graphs can be used to achieve targets matching, and the detection process can be achieved by targets matching to get the optimal targets set. Finally, the targets set can be used to achieve the minimum deviation forecasting of all frames, and the targets tracking can be achieved. A junction video is selected as the experimental data, and a large number of experiments have been done. The results show that the proposed method not only has a great effect to track cars, but also has a better detection rate and tracking accuracy. The car flow statistics can be completed effectively. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Flow graphs

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Disordering-digit method:a simple method to generate pseudo random numbers

Disordering-digit method:a simple method to generate pseudo ...

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2014 International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SMTA 2014)

作者： Xia Zhang Xianzhong Pan Institute of Computing Technology China Academy of Railway Science School of Mechanical Electronic and Control Engineering Beijing Jiaotong University

This paper presents a new method called Disordering-Digit Method(DDM) for generating random numbers,which can produce numbers not only stochastic but also *** from other RNG(Random Numbers Generation) methods by mathematic or physical means,DDM is very simple to realize and can be run in very high speed in computer *** and unrepeatable are the two most outstanding features of *** details of DDM are explained,and its good statistical features are *** the end,a real case of producing passenger order numbers through DDM in China Ticket Reservation System is given.

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Nonlinear Disturbance Observer Enhanced Predictive control for Airbreathing Hypersonic Vehicles

Nonlinear Disturbance Observer Enhanced Predictive Control f...

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第三十三届中国控制会议

作者： Jun Yang Zhenhua Zhao Shihua Li Wei Xing Zheng School of Automation Southeast UniversityKey laboratory of Measurement and Control of CSEMinistry of Education School of Computing Engineering and MathematicsUniversity of Western Sydney

ISBN: (纸本)9781479947249

The robust optimized tracking control problem for a generic airbreathing hypersonic vehicle(AHV) subject to nonvanishing mismatched disturbances/uncertainties is investigated in this paper.A baseline nonlinear model predictive controller(MPC) is firstly introduced for optimized tracking control of the nominal dynamics.A nonlinear disturbance observer(NDO)based control law is then developed for robustness enhancement in the presence of both external disturbances and *** with the existing robust tracking control methods for AHVs,the proposed composite nonlinear MPC method obtains not only promising robustness and disturbance rejection performance but also optimized nominal tracking control *** merits of the proposed method are validated by implementing simulation studies on the AHV system.

关键词： Airbreathing hypersonic vehicle,Nonlinear model predictive control,Mismatched disturbance rejection

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CLSIFT: An optimization study of the scale invariance feature transform on GPUs

CLSIFT: An optimization study of the scale invariance featur...

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15th IEEE International Conference on High Performance computing and Communications, HPCC 2013 and 11th IEEE/IFIP International Conference on Embedded and Ubiquitous computing, EUC 2013

作者： Wang, Weiyan Zhang, Yunquan Guoping, Long Yan, Shengen Jia, Haipeng Lab. of Parallel Software and Computational Science Institute of Software Chinese Academy of Sciences China State Key Laboratory of Computing Science Institute of Software Chinese Academy of Sciences China School of Computer and Control Engineering University of Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769550886

Scale Invariance Feature Transform (SIFT) is quite suitable for image matching because of its invariance to image scaling, rotation and slight changes in illumination or viewpoint. However, due to high computation complexity it's technically challenging to deploy SIFT in real time application situations. To address this problem, we propose CLSIFT, an OpenCL based highly speeded up and performance portable SIFT solution. Important optimization techniques employed in CLSIFT such as: (1) For less global memory traffic, independent logical functions are merged into the same kernel to reuse data.(2) loop buffers are introduced in for data and intermediate results reusing.(3)Task queue used to schedule threads in the same branch to remove branch divergences. (4) Data partition is based on the statics patterns for workload balance among workgroups. (5) Overlap of CPU time and better parallel strategies are used too. With all mentioned efforts, CLSIFT processes lena. jpg at 74.2 FPS and 43.4FPS respectively on NVidia and AMD GPUS, much higher than CPU's nearly 10 FPS and the known fastest SIFTGPU's 39.8 FPS and 13FPS. Moreover in a quantitative comparison approach we analyze those successful strategies beating SIFTGPU, a famous existing GPU implementation. Additionally, we observe and conclude that NVidia GPU achieves better occupancy and performance due to some factors. Finally, we summarize some techniques and empirical guiding principles that may be shared by other applications on GPU. © 2013 IEEE.

关键词： Graphics processing unit

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