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Edge Bipartite Consensus of Multi-Agent Systems 14

Edge Bipartite Consensus of Multi-Agent Systems

引用

14th IEEE International Conference on Control and Automation (ICCA)

作者： Tian, Lei Ji, Zhijian Hou, Ting Qingdao Univ Coll Automat & Elect Engn Sch Math & Stat Qingdao Peoples R China Qingdao Univ Coll Automat & Elect Engn Qingdao Peoples R China Shandong Univ Sci & Technol Coll Math & Syst Sci Qingdao Peoples R China

ISBN: (纸本)9781538660898

This paper investigates the edge bipartite consensus issues of multi-agent systems with antagonistic interactions, where signed digraphs are used to represent such systems. With the help of line graph of the original nodal topology, it is found and proved that the line graph corresponding to a structurally balanced topology is still structurally balanced. The necessary and sufficient conditions for the edge states to asymptotically achieve bipartite consensus under the edge dynamics are obtained.

关键词： Protocols Topology Multi-agent systems Automation Laplace equations Electronic mail eigenvalues and eigenfunctions"

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Accelerated Consensus with Linear Rate of Convergence

Accelerated Consensus with Linear Rate of Convergence

引用

American Control Conference

作者： Bu, Jingjing Fazel, Maryam Mesbahi, Mehran Univ Washington Dept Elect Engn & Aeronaut & Astronaut Seattle WA 98195 USA

ISBN: (纸本)9781538654286

We are concerned with the problem of achieving average consensus on fixed, undirected and connected graphs with an unknown graph topology. Motivated by Nesterov's accelerated gradient algorithm [1] [2], we describe a completely distributed consensus protocol that has a rate of convergence of O(q(2)k/k(2)), where k is the iteration number and q < 1 is dependent on the second largest eigenvalue modulus of weighting matrix constructed on the graph. By casting the protocol into a linear time-variant system, we show a dimension-free worst case convergence rate bound, that is, a rate independent of the scale of the network. We also discuss several convergence rate bounds for different choices of the weighting matrix in the protocol.

关键词： Protocols Convergence Acceleration Optimization Symmetric matrices Linear programming eigenvalues and eigenfunctions"

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Privacy preservation in a continuous-time static average consensus algorithm over directed graphs

Privacy preservation in a continuous-time static average con...

引用

American Control Conference

作者： Rezazadeh, Navid Kia, Solmaz S. Univ Calif Irvine Dept Mech & Aerosp Engn Irvine CA 92697 USA

ISBN: (纸本)9781538654286

In this paper, we study the problem of privacy preservation of the continuous-time Laplacian static average consensus algorithm using additive perturbation signals. We consider this problem over a strongly connected and weight-balanced digraph. Starting from a local reference value, in static average consensus algorithm each agent constantly communicates with its neighboring agents to update its local state to compute the average of the reference values across the network. Since every agent transmits its local reference value to its in-neighbors, the reference value of the agents are trivially disclosed. In this paper, we investigate the possibility of preserving the privacy of the reference value of the agents by adding admissible perturbation signals to the local dynamics and the transmitted out signals of the agents. Admissible additive perturbation signals are those signals that do not perturb the final convergence point of the algorithm from the average of the reference values of the agents. Our results show that if an adversarial agent has access to the output of another agent and all the input signals transmitted to that agent, the adversary can discover the private reference value of that agent, regardless of the perturbation signals. Otherwise, the privacy of the agent can be preserved. We demonstrate our results through a numerical example.

关键词： Privacy Perturbation methods Convergence Heuristic algorithms Additives Laplace equations eigenvalues and eigenfunctions"

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Improved Weighted PLS for Quality-Relevant Fault Monitoring Based on Inner Matrix Similarity

Improved Weighted PLS for Quality-Relevant Fault Monitoring ...

引用

IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM)

作者： Bai, Xiwei Wang, Xuelei Tan, Jie Sun, Wei Zhang, Zhiyong Zhang, Zhonghao Chinese Acad Sci Inst Automat Beijing 100190 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Zhejiang Tianneng Energy Technol Co Ltd Changxing 313100 Peoples R China

ISBN: (纸本)9781538618547

Monitoring the influence of fault towards the product quality is of great importance to modern manufacturing enterprise. Traditional projection to latent structures (PLS) method as well as its variants still face many problems. In this paper, a new improved weighted PLS (IWPLS) is proposed to utilize the local information of the process data, handle noises and build regression models with better generalization capability. The objective function of IWPLS is weighted through calculating the similarity between the target inner matrix (IM) and the other inner matrices (IMs). Two types of weight matrices are given for different process data set. The IWPLS-based monitoring scheme is developed with additional restrains and decomposition operation. A designed numerical experiments and Tennessee Eastman Process (TEP) are employed to evaluate the validity of the proposed method.

关键词： Monitoring Matrix decomposition Mathematical model Data models Automation Numerical models eigenvalues and eigenfunctions"

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On the Sparsification of the Reluctance Matrix in RLCk Circuit Transient Analysis 15

On the Sparsification of the Reluctance Matrix in RLCk Circu...

引用

15th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD) / 14th Conference on PhD Research in Microelectronics and Electronics (PRIME)

作者： Antoniadis, Charalampos Evmorfopoulos, Nestor Stamoulis, Georgios Univ Thessaly Dept Elect & Comp Engn Volos Greece

ISBN: (纸本)9781538651537

The ever increasing frequency scaling of contemporary very large scale integrated circuits has introduced the necessity to factor in signal integrity the analysis of inductive effects arising within the different blocks of an IC. The efficient simulation of the inductive effects requires sparsification of the dense inductance matrix, or its inverse (called reluctance matrix) which is diagonally dominant and more amenable to sparsification. However, direct truncation of matrix entries below a certain threshold introduces unacceptable error in transient analysis for the high sparsity ratios we are interested in. In this paper, we present a graph sparsification algorithm that preserves the eigenvalues of the reluctance matrix and results to sparse approximations that offer better and bounded accuracy in transient analysis. Experimental results indicate that sparsity ratios over 99% can be attained with a negligible error in transient analysis.

关键词： Sparse matrices Laplace equations Resistance Transient analysis Symmetric matrices Inductance eigenvalues and eigenfunctions"

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Robust Distributed Adaptive Containment Control of Heterogeneous Linear Uncertain Multi-Agent Systems

Robust Distributed Adaptive Containment Control of Heterogen...

引用

American Control Conference

作者： Yuan, Chengzhi He, Haibo Dong, Xiaonan Ilbeigi, Shahab Univ Rhode Isl Dept Mech Ind & Syst Engn Kingston RI 02881 USA Univ Rhode Isl Dept Elect Comp & Biomed Engn Kingston RI 02881 USA

ISBN: (纸本)9781538654286

In this paper, a new distributed model reference adaptive control (MRAC) design framework is proposed for containment control of heterogeneous uncertain multi-agent systems (MAS). Both groups of leaders and followers are considered to have general linear dynamics with the leaders subject to bounded external inputs and the followers subject to uncertain system dynamics. A novel distributed adaptive control protocol is developed under this new framework, which incorporates robust adaptive control with nonlinear compensator techniques to cope with unmeasurable bounded leaders' inputs and uncertain agent dynamics. Convergence of the containment control errors to an arbitrarily adjustable neighborhood of the origin is guaranteed based on the Lyapunov method. The proposed MRAC framework provides a promising alternative solution over the prevailing cooperative output regulation framework for heterogeneous linear MAS containment control. It enables us to handle more general system settings under more stringent control environments with limited accessibility of leaders' information and uncertain follower dynamics.

关键词： Robustness Adaptive control Protocols Symmetric matrices Nonlinear dynamical systems Task analysis eigenvalues and eigenfunctions"

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Examining the Observability of Emergent Behavior as a Function of Reduced Model Order

Examining the Observability of Emergent Behavior as a Functi...

引用

American Control Conference

作者： Yang, Zhaohui Jerath, Kshitij Washington State Univ Sch Mech & Mat Engn Pullman WA 99164 USA

ISBN: (纸本)9781538654286

Current work on complex systems has been heavily focused on network interactions and network structure, without significant emphasis on the emergent phenomena that characterize such systems. In the included work, the ability to perceive or observe emergent behavior in complex systems has been studied. Specifically, by identifying emergent behavior as the dynamics of reduced-order models of the self-organizing systems, the observability of the emergent phenomena can be studied as a function of the model order. Included analytical results show the relationship between observability metrics of the full- and reduced-order models. Singular perturbation techniques have been used to perform model order reduction for nonlinear systems such as the Hyper Rossler and coupled Hindmarsh-Rose neuron models. Results indicate that accuracy increases and observability decreases with increasing model order. The trade-off between accuracy and observability metrics has been used to propose a predictive metric that identifies the desirable order at which to model emergent behavior.

关键词： Observability Measurement Reduced order systems Nonlinear systems Complex systems Manifolds eigenvalues and eigenfunctions"

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Iterative Deconvolution for Exposure Planning in Scanning Laser Lithography

Iterative Deconvolution for Exposure Planning in Scanning La...

引用

American Control Conference

作者： Ghalehbeygi, Omid T. O'Connor, John Routley, Ben S. Fleming, Andrew J. Univ Newcastle Fac Engn & Built Environm Callaghan NSW 2308 Australia Univ Newcastle Sch Math & Phys Sci Newcastle NSW Australia

ISBN: (纸本)9781538654286

Laser scanning lithography is a maskless method for exposing photoresist during semiconductor manufacturing. In this method, the power of a focused beam is modulated while scanning the photoresist. This article describes an iterative de convolution method for determining the exposure pattern. This approach is computationally efficient as there is no gradient calculation. Simulations demonstrate the accurate fabrication of a feature with sub-wavelength geometry.

关键词： Lithography Laser beams Resists Deconvolution Iterative methods Convolution eigenvalues and eigenfunctions"

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A Case Study on Determining Stability Boundaries of Parameter Uncertain Systems 26

A Case Study on Determining Stability Boundaries of Paramete...

引用

26th Mediterranean Conference on Control and Automation (MED)

作者： Mutlu, Ilhan Schroedel, Frank Mihailescu-Stoica, Dinu Alaa, Khaled Soeylemez, Mehmet Turan IAV GmbH Dev Ctr Chemnitz Stollber D-09366 Stollberg Germany Tech Univ Darmstadt Control Methods & Robot Lab D-64283 Darmstadt Germany Univ Twente Fac Elect Engn Math & Comp Sci Enschede Netherlands Istanbul Tech Univ Control & Automat Engn Dept TR-34469 Istanbul Turkey

ISBN: (纸本)9781538678909

Guaranteeing the stability is one of the fundamental problems of control engineering. In most of the dynamical systems, parameter uncertainties can not be avoided. Thus, it is crucial from a practical point of view to propose generic methods for analyzing the stability of uncertain parameter systems. In this study, the extension of previously proposed Lyapunov Equation based stability mapping approach to the case of parameter uncertain systems is presented. Using the present method, it becomes possible to determine the explicit stability boundaries of the uncertain parameters along with the free controller parameters. Unlike most of the conventional approaches, the current method does not include any restrictions related with the number of the uncertain parameters and the way that the uncertain parameter(s) show themselves in the problem formulation. In order to demonstrate the efficiency of the proposed method, two benchmark case studies are discussed in detail. It is shown that the proposed approach is capable of increasing the accuracy of the previous results in specific cases while ensuring a flexible and easily applicable stability analysis environment for such systems.

关键词： Uncertainty Uncertain systems Stability criteria Closed loop systems Mathematical model eigenvalues and eigenfunctions"

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Device Localization using mmWave Ranging with Sub-6-assisted Angle of Arrival Estimation 13

Device Localization using mmWave Ranging with Sub-6-assisted...

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13th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)

作者： Maletic, Nebojsa Sark, Vladica Gutierrez, Jesus Grass, Eckhard IHP Technol Pk 25 D-15236 Frankfurt Oder Germany Humboldt Univ Berlin Germany

ISBN: (纸本)9781538647295

Millimeter wave (mmWave) communication is a promising solution for achieving high data rates and low latency in future wireless networks. 5G systems are expected to fulfill these strict requirements using, among others, mmWaves. The nature of the communication in these bands considering human mobility make the challenges even complex for reasons like high beam training overhead. Features like ranging and localization are becoming key to overcome these limitations. In this paper, we address the problem of device localization in the mmWave b-and. We propose a solution that leverages the co-existence of Sub-6 GHz and mmWave connectivity at access and mobile nodes. Our solution relies on Angle of Arrival estimation using Sub-6 signal at the access node. This information is provided to the mmWave part for subsequent beam training phase and highresolution ranging. To validate the proposed solution, a number of measurements are performed showing its feasibility.

关键词： Antenna arrays Training Distance measurement Estimation Array signal processing Synchronization eigenvalues and eigenfunctions"

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