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第35届中国控制会议

作者： Yijing Xie Zongli Lin Department of Automation and Key Laboratory of System Control and Information Processing of the Ministry of EducationShanghai Jiao Tong University Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

ISBN: (纸本)9781509009107

This paper studies the global optimal consensus problem for a multi-agent system with bounded *** agent is described by a single-integrator dynamics and has its own objective function which is known to itself *** each agent,we construct a bounded local control law that uses the information accessible to it through the communication topology underlying the multi-agent *** is shown that these control laws together achieve global optimal consensus for the multi-agent system,that is,all agents reach consensus at a state that minimizes the sum of the objective functions of all agents as long as the communication topology is strongly connected and *** results are given to illustrate the theoretical results.

关键词： Multi-agent systems bounded control distributed optimization consensus optimal consensus

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Robust Semi-global Leader-following Consensus of Linear Multi-agent systems with Imperfect Actuators

Robust Semi-global Leader-following Consensus of Linear Mult...

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第35届中国控制会议

作者： Liangren Shi Zhiyun Zhao Zongli Lin Department of Automation and Key Laboratory of System Control and Information Processing of the Ministry of EducationShanghai Jiao Tong University Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

ISBN: (纸本)9781509009107

This paper deals with the robust semi-global leader-following consensus problem for a linear multi-agent system with imperfect *** actuators of the follower agents have imperfect input output characteristics,such as those of saturation and dead-zone,and those characteristics are not precisely *** agents are also subject to input additive disturbances.A low-and-high gain based linear state feedback control law is constructed for each follower *** is shown that these control laws achieve robust semi-global leader-following consensus when the graph representing the communication topology among the followers is undirected and connected and the leader is a neighbor of at least one *** simulation illustrates the theoretical results.

关键词： Consensus leader-following actuator saturation dead-zone low-and-high gain feedback

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Discrete-time Global Leader-Following Consensus of a Group of General Linear systems Using Bounded controls:the State Feedback Case

Discrete-time Global Leader-Following Consensus of a Group o...

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第35届中国控制会议

作者： Zhiyun Zhao Zongli Lin Department of Automation and Key Laboratory of System Control and Information Processing of the Ministry of EducationShanghai Jiao Tong University Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

ISBN: (纸本)9781509009107

This paper studies the problem of global leader-following consensus of a group of discrete-time general linear systems with bounded *** construct a bounded state feedback control law for each follower agent in the group by using a multihop relay protocol,in which the agent obtains the information of other agents through multi-hop paths in the communication *** number of hops each agent uses to obtain its information about other agents for an input is less than or equal to the sum of the number of real eigenvalues on the unit circle and the number of pairs of complex eigenvalues on the unit circle of the sub-system corresponding to the input,and the feedback gains are constructed from the adjacency matrix associated with the communication *** show that these control laws achieve global leader-following consensus when the communication topology is a strongly connected and detailed balanced directed graph and the leader is a neighbor of at least one follower agent.

关键词： Cooperative control consensus multi-agent systems discrete-time bounded controls

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Dual-Tone Radio Interferometric Positioning systems for Multi-Target Localization Using a Single Mobile Anchor

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China Communications 2015年第1期12卷 25-35页

作者： LI Li'an WANG Yiyin MA Xiaoli CHEN Cailian GUAN Xinping Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China School of Electrical & Computer Engineering Georgia Institute of Technology

In this paper, a low-cost dualtone radio interferometric positioning system using a single mobile anchor is proposed to locate multiple targets at the same time. We name it mDRIPS. In mDRIPS, each target continuously transmits a dual-tone signal with its dedicated frequencies, and the mobile anchor receives the signals at different positions along its trajectory, Neither time synchronization between the mobile anchor and the targets nor time synchronization among the targets is required. We take the instability of targets clocks into consideration and develop an ESPRIT-type algorithm to estimate frequencies of each dual-tone signal. Furthermore, the time of arrival （TOA） of each target signal is extracted from the phase estimates of the received dual-tone signals. After measuring several TOAs at different locations along the anchor＇s trajectory, each target can be located. Since the frequency difference of the two tones of each dualtone signal is designed to be smaller than the channel coherence bandwidth, the same fading effect on these two tones can be eliminated. Moreover, the integer ambiguity problem due to phase wrapping is investigated, and a localization algorithm to deal with a simplified ambiguity problem is proposed. Numerical results demonstrate the efficiency of the proposed mDRIPS.

关键词： ranging localization mobile anchor radio interferometry oscillator instability

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Enhancing BEM simulations of a stalled wind turbine using a 3D correction model

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Go Hutomo Taurista Syawitri Tri Kusumadewi Winda Oktavia Ahmad Sabila Herlambang Setiadi Muhamad Faisal Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Ilmi Bumi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia Toyota SO Department Astra International Ltd. Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Project Support and Cost Control Division Indoturbine Ltd. Jakarta Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom Materials Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia

Nowadays wind turbine rotors are usually employed with pitch control mechanisms to avoid deep stall conditions. Despite that, wind turbines often operate under pitch fault situation causing massive flow separation to occur. Pure Blade Element Momentum (BEM) approaches are not designed for this situation and inaccurate load predictions are already expected. In the present studies, BEM predictions are improved through the inclusion of a stall delay model for a wind turbine rotor operating under pitch fault situation of -2.3° towards stall. The accuracy of the stall delay model is assessed by comparing the results with available Computational Fluid Dynamics (CFD) simulations data.

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A least square approach for distributed sensor fusion in bandwidth-constrained sensor networks

A least square approach for distributed sensor fusion in ban...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Shanying Zhu Jinming Xu Cailian Chen Xinping Guan Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China Department of Automation Shanghai Jiao Tong University Shanghai China School of Electrical and Electronic Engineering Nanyang Technological University Singapore

ISBN: (纸本)9781479999897

In this paper, we consider a simple model of distributed sensor fusion problem in sensor networks with asymmetric links, where the common goal is linear parameter estimation. For the realistic scenario of bandwidth-constrained networks, we propose a least square approach, based on distributed quantized consensus algorithms, to compute the ideal centralized sample mean estimate. Analytical results show that the proposed approach is effective in smearing out the quantization errors, and outperforms the centralized approaches with respect to the estimation performance. Simulation results are provided to validate the analytical results.

关键词： Quantization (signal) Sensor fusion Bandwidth Distributed algorithms Convergence Estimation Probabilistic logic

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Attitude synchronization of multiple rigid bodies in SE(3) over proximity networks

Attitude synchronization of multiple rigid bodies in SE(3) o...

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第35届中国控制会议

作者： Juan Deng Zhixin Liu Lin Wang John S.Baras Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceCAS Department of Automation Shanghai Jiao Tong Universityand the Key Laboratory of System Control and Information ProcessingMinistry of Education Department of Electrical and Computer Engineering and the Institute for Systems Research University of MarylandCollege Park

ISBN: (纸本)9781509009107

This paper investigates the attitude synchronization of a group of moving rigid bodies whose states including positions and rotation matrices evolve in the Lie group SE(3).The commonly used circular neighborhood is adopted,and the neighbor graphs are described by proximity *** order to avoid introducing discussions on the abrupt changes of neighbor graphs,a dwell time is *** distributed sampled-data control law for the angular velocity is *** the assumptions on the initial states,we provide sufficient conditions for the attitude synchronization of multiple rigid body *** with the existing results,our condition depends only on the neighborhood radius,the moving velocity and the dwell time.

关键词： rigid body SE(3) attitude synchronization sampled-data control proximity network

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Event-triggered consensus tracking for multi-agent systems with nonlinear uncertainty dynamics

Event-triggered consensus tracking for multi-agent systems w...

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第35届中国控制会议

作者： Xuhui Li Bohui Wang Jingcheng Wang Bin Zhang Hai Lin Xiaocheng Li the National Engineering and Research Center for Commercial Aircraft Manufacturing Commercial Aircraft Corporation of China Ltd the Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China the Department of Electrical Engineering University of South Carolina

ISBN: (纸本)9781509009107

This paper addresses the event-triggered consensus tracking for general linear multi-agent systems with nonlinear uncertainty dynamics under directed communication *** proposed event-triggered consensus strategy relaxes the assumptions in existing works that the control gain and local inputs must be *** the consensus tracking condition being satisfied,the cooperative control law with bounded parameter is developed based on the intermittent *** shows that if the sampling condition,in terms of LMIs,is satisfied,the resulting closed-loop general linear multiagent uncertain systems will achieve the *** results are provided to verify the proposed approach.

关键词： Index Terms-multi-agent systems event-triggered consensus tracking uncertainty intermittent samples

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Improving a two-equation eddy-viscosity turbulence model to predict the aerodynamic performance of thick wind turbine airfoils

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Tri Kusumadewi Go Hutomo Ahmad Sabila Taurista Syawitri Herlambang Setiadi Muhamad Faisal Raditya Wiranegara Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Toyota SO Department Astra International Ltd. Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan School of Aerospace Transport and Manufacturing Cranfield University United Kingdom Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom

Numerical simulations for relatively thick airfoils are carried out in the present studies. An attempt to improve the accuracy of the numerical predictions is done by adjusting the turbulent viscosity of the eddy-viscosity Menter Shear-Stress-Transport (SST) model. The modification involves the addition of a damping factor on the wall-bounded flows incorporating the ratio of the turbulent kinetic energy to its specific dissipation rate for separation detection. The results are compared with available experimental data and CFD simulations using the original Menter SST model. The present model improves the lift polar prediction even though the stall angle is still overestimated. The improvement is caused by the better prediction of separated flow under a strong adverse pressure gradient. The results show that the Reynolds stresses are damped near the wall causing variation of the logarithmic velocity profiles.

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Explicit adaptive synchronization of multi-agent uncertain systems with heterogeneous dynamic networks

Explicit adaptive synchronization of multi-agent uncertain s...

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American control Conference (ACC)

作者： Bohui Wang Yingguan Wang Bin Zhang Fengrong Li Jingcheng Wang Hai Lin Xiaocheng Li Department of Automation Key Laboratory of System Control and Information Processing Shanghai China Key Laboratory of Wireless Sensor Network & Communication Chinese Academy of Sciences Shanghai China Department of Electrical Engineering University of South Carolina Columbia SC USA

ISBN: (纸本)9781467386838

This paper proposes an explicit adaptive algorithm to solve the problem of heterogeneous dynamic synchronization of multi-agent uncertain systems. Different from the existing works, the proposed algorithm depends on less control parameters and achieves zero synchronization error between the agents of heterogeneous uncertain dynamic networks and virtual target. By introducing appropriate assumptions, a class of explicit adaptive synchronization protocols is designed based on a combination of the virtual target's states, distributed feedback gain, and the limited neighboring agents' information. By using Lyapunov function approach, it is proved that the explicit adaptive synchronization problem of closed-loop multi-agent uncertain systems with heterogeneous dynamic networks can be solved, if the control parameters of the explicit adaptive synchronization algorithm are suitably selected. Finally, an example is given to demonstrate the proposed theory.

关键词： Synchronization Heuristic algorithms Uncertain systems Adaptive systems Protocols Eigenvalues and eigenfunctions Laplace equations

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