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A General Framework for Probabilistic Relay Selection in Asymmetric Buffer-Aided Cooperative Relaying systems

IEEE Transactions on Communications 2025年

作者： Xu, Peng Luo, Chenghong Huang, Chong Chen, Gaojie He, Yuanzhi Li, Yong Wong, Kai-Kit Chongqing University of Posts and Telecommunications School of Communications and Information Engineering Chongqing400065 China Chongqing Key Laboratory of Mobile Communications Technology Chongqing400065 China 5GIC & 6GIC University of Surrey GuildfordGU2 7XH United Kingdom Guangdong Shenzhen518107 China University of Surrey 5GIC & 6GIC United Kingdom PLA Institute of Systems Engineering Academy of Military Science Beijing100141 China Chongqing University College of Computer Science Chongqing400044 China University College London Department of Electronic and Electrical Engineering LondonWC1E 7JE United Kingdom

This paper presents a general framework for probabilistic relay selection (RS) in asymmetric buffer-aided cooperative relaying systems, which caters to scenarios with both perfect and imperfect channel state information (CSI) during the RS process. The framework extends and generalizes many existing buffer-aided RS schemes. In particular, we introduce an auxiliary stochastic process which assigns varying selection probabilities to different links, considering the dynamic wireless channel and buffer states. Subsequently, we leverage the obtained outage probability and average packet delay (APD) to formulate outage optimization problems while adhering to APD. To address the intricate high-dimensional optimization problems, we employ a deep learning (DL) approach, which involves designing probability mass functions for the auxiliary stochastic process and developing an effective loss function to update the neural network. Simulation results unequivocally demonstrate the superior performance of the proposed DL-based probabilistic RS scheme compared to benchmark schemes, particularly in scenarios involving imperfect CSI. © 1972-2012 IEEE.

关键词： Stochastic systems

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Evolution and maintenance of cooperation via inheritance of neighborhood relationship

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Chinese Science Bulletin 2013年第28期58卷 3491-3498页

作者： TAN ShaoLin Lü JinHu YU XingHuo HILL David John The Key Laboratory of System and Control Institute of Systems ScienceAcademy of Mathematics and Systems ScienceChinese Academy of Sciences School of Electrical and Computer Engineering RMIT University Department of Electrical and Electronic Engineering The University of Hong Kong School of Electrical and Information Engineering University of Sydney

Cooperative behaviors are ubiquitous in nature and human *** is very important to understand the internal mechanism of emergence and maintenance of *** we know now,the offsprings inherit not only the phenotype but also the neighborhood relationship of their *** recent research results show that the interactions among individuals facilitate survival of cooperation through network reciprocity of clustering *** paper aims at introducing an inheritance mechanism of neighborhood relationship to explore the evolution of *** detail,a mathematical model is proposed to characterize the evolutionary process with the above inheritance *** analysis and numerical simulations indicate that high-level cooperation can emerge and be maintained for a wide variety of cost-to-benefit ratios,even if mutation happens during the evolving process.

关键词：合作机制邻里关系维护演变进化过程人类社会遗传机制数学模型

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REAL-TIME FEEDBACK FOR SIDEWALL PROFILE CONTROL IN REACTIVE ION ETCHING

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JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS 1995年第3期13卷 1792-1796页

作者： RASHAP, B FREUDENBERG, J ELTA, M Electronics Manufacturing and Control Systems Laboratory Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor Michigan 48109&#x2010 2122|c|

Reactive ion etching is an important process in the fabrication of microelectronic devices. This article reports on work in progress towards developing a strategy for controlling sidewall profile during this process. ... 详细信息

关键词： Reactive ion etching

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Describing fuzzy sets using a new concept:fuzzify functor

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Optoelectronics Letters 2009年第1期5卷 69-72页

作者：魏克新王兆霞王权 Tianjin Key Laboratory of Control Theory & Applications in Complicated Systems Tianjin University of Technology Department of Electrical and Computer Engineering National University of Singapore

This paper proposed a fuzzify functor as an extension of the concept of fuzzy *** fuzzify functor and the first-order operated fuzzy set are *** the theory analysis,it can be observed that when the fuzzify functor acts on a simple crisp set,we get the first order fuzzy set or type-1 fuzzy *** operating the fuzzify functor on fuzzy sets,we get the higher order fuzzy sets or higher type fuzzy sets and their membership *** the fuzzify functor we can exactly describe the type-1 fuzz...

关键词： Membership functions

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Correction of Time-varying PMU Phase Angle Deviation with Unknown Transmission Line Parameters

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CSEE Journal of Power and Energy systems 2023年第1期9卷 315-325页

作者： Ancheng Xue He Kong Feiyang Xu Junbo Zhao Naichao Chang Joe H.Chow Haiyan Hong State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Department of Electrical and Computer Engineering University of ConnecticutStorrs06268USA National Electric Power Dispatching and Control Center Beijing 100031China Department of Electrical Computerand Systems EngineeringRensselaer Polytechnic Institute(RPI)TroyNY 12180USA

Phasor measurement units(PMUs)provide useful data for real-time monitoring of the smart ***,there may be time-varying deviation in phase angle differences(PADs)between both ends of the transmission line(TL),which may deteriorate application performance based on *** address that,this paper proposes two robust methods of correcting time-varying PAD deviation with unknown parameters of TL(ParTL).First,the phenomena of time-varying PAD deviation observed from field PMU data are *** general formulations for PAD estimation are then *** simplify the formulations,estimation of PADs is converted into the optimal problem with a single ParTL as the variable,yielding a linear estimation of *** latter is used by second-order Taylor series expansion to estimate PADs *** reduce the impact of possible abnormal amplitude data in field data,the IGG(Institute of Geodesy&Geophysics,Chinese Academy of Sciences)weighting function is *** using both simulated and field data verify the effectiveness and robustness of the proposed methods.

关键词： Correction line parameters parameter identification phasor measurement time-varying phase angle difference deviation

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Controlled Islanding Strategy Considering Uncertainty of Renewable Energy Sources Based on Chance-constrained Model

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Journal of Modern Power systems and Clean Energy 2022年第2期10卷 471-481页

作者： Shengyuan Liu Tianhan Zhang Zhenzhi Lin Yilu Liu Yi Ding Li Yang the School of Electrical Engineering Zhejiang UniversityHangzhou 310027China the Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN 37996USA the School of Electrical Engineering Shandong UniversityJinan 250061China Electrical and Electronics Systems Research Division Oak Ridge National LaboratoryOak RidgeTN 37830USA

Controlled islanding plays an essential role in preventing the blackout of power *** there are several studies on this topic in the past,no enough attention is paid to the uncertainty brought by renewable energy sources(RESs)that may cause unpredictable unbalanced power and the observabilit>T of power systems after islanding that is essential for back-up black-start ***,a novel controlled islanding model based on mixed-integer second-order cone and chance-constrained programming(MISOCCP)is proposed to address these ***,the uncertainty of RESs is characterized by their possibility distribution models with chance constraints,and the requirements,e.g.,system observability,for rapid back-up black-start measures are also ***,a law of large numbers(LLN)based method is em-ployed for converting the chance constraints into deterministic ones and reformulating the non-convex model into convex ***,case studies on the revised IEEE 39-bus and 118-bus power systems as well as the comparisons among different models are given to demonstrate the effectiveness of the proposed *** results show that the proposed model can result in less unbalanced power and better observability after islanding compared with other models.

关键词： Controlled islanding second-order cone chance-constrained programming renewable energy source(RES) black-start observability.

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Maximal antichain lattice algorithms for distributed computations

Maximal antichain lattice algorithms for distributed computa...

引用

14th International Conference on Distributed Computing and Networking, ICDCN 2013

作者： Garg, Vijay K. Parallel and Distributed Systems Lab. Department of Electrical and Computer Engineering University of Texas at Austin Austin TX 78712 United States

ISBN: (纸本)9783642356674

The lattice of maximal antichains of a distributed computation is generally much smaller than its lattice of consistent global states. We show that a useful class of predicates can be detected on the lattice of maximal antichains instead of the lattice of consistent cuts obtaining significant (exponential for many cases) savings. We then propose new online and offline algorithms to construct and enumerate the lattice of maximal antichains. Previously known algorithm by Nourine and Raynoud [NR99, NR02] to construct the lattice takes O (n2m) time where n is the number of events in the computation, and m is the size of the lattice of maximal antichains. The algorithm by Jourdan, Rampon and Jard [JRJ94] takes O ((n + w2)wm) time where w is the width of the computation. All these algorithms assume as input the lattice of maximal antichains prior to the arrival of a new event. We present a new online incremental algorithm, OLMA, that computes the newly added elements to the lattice without requiring the prior lattice. Since the lattice may be exponential in the size of the computation, we get a significant reduction in the space complexity. The OLMA algorithm takes O (mw2 log w L) time and O (wL w log n) space where wL is the width of the lattice of maximal antichains. The lower space complexity makes our algorithm applicable for online global predicate detection in a distributed system. For the purposes of analyzing offline traces, we also propose new enumeration algorithms to traverse the lattice. © Springer-Verlag 2013.

关键词： Computational complexity

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ADAPTIVE EDGE-FOLLOWING FORCE CONTROL OF AN INDUSTRIAL ROBOT

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ROBOTICS AND computer-INTEGRATED MANUFACTURING 1989年第4期6卷 331-337页

作者： LIOU, JN JAMSHIDI, M STARR, GP CAD Laboratory for Systems/Robotics Department of Electrical and Computer Engineering University of New Mexico Albuquerque NM 87131 United States Robotic Research Laboratory Department of Mechanical Engineering University of New Mexico Albuquerque NM 87131 United States

Control of tool-workpiece interaction force is of vital importance in automated assembly. Using a simple linear continuous model of an edge-following system to predict the appropriate accomodation gains in a force control loop, previous work has shown that force control by accomodation is feasible. Following up this work, this paper describes the analysis, simulation and implementation of an adaptive force control in a two-dimensional edge-following task with a PUMA 560 robot and wrist force sensor. First, a discrete-time model of an edge-following system is developed and then used as the plant; second, a model reference adaptive control (MRAC) scheme is applied to achieve both tracking and regulation purposes. The reference (tracking) model can be determined by experimental reference input and desired model output information; the reference (regulation) model can be obtained by simulation to smooth out the plant output and improve the augmented filtered plant-model error. Study is done on the values of the adaptation gains in the adaptive mechanism, and hence can be adjusted to insure the best plant output performance.

关键词： Robots, Industrial

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Lattice completion algorithms for distributed computations

Lattice completion algorithms for distributed computations

引用

16th International Conference on Principles of Distributed systems, OPODIS 2012

作者： Garg, Vijay K. Parallel and Distributed Systems Lab. Department of Electrical and Computer Engineering University of Texas at Austin Austin TX 78712 United States

ISBN: (纸本)9783642354755

A distributed computation is usually modeled as a finite partially ordered set (poset) of events. Many operations on this poset require computing meets and joins of subsets of events. The lattice of normal cuts of a poset is the smallest lattice that embeds the poset such that all meets and joins are defined. In this paper, we propose new algorithms to construct or enumerate the lattice of normal cuts. Our algorithms are designed for distributed computing applications and have lower time or space complexity than those of existing algorithms. We also show applications of this lattice to the problems in distributed computing such as finding the extremal events and detecting global predicates. © 2012 Springer-Verlag.

关键词： Distributed computer systems

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A GENERALIZED ENERGY FUNCTION FOR TRANSIENT STABILITY ANALYSIS OF POWER-systems

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IEEE TRANSACTIONS ON CIRCUITS AND systems 1984年第7期31卷 637-645页

作者： NARASIMHAMURTHI, N MUSAVI, MT Department of Electrical and Computer Engineering Power Systems Laboratory University of Michigan Ann Arbor MI USA Department of Electrical Engineering University of Maine Orono ME USA University of Michigan Ann Arbor MI USA

In this paper, an "energy function" is derived for transient stability analysis of power systems. The main contribution of this paper is the generality of the model for the loads. The loads are modeled as constant real power loads but the reactive part of the loads are modeled as arbitrary function of the load bus voltage. This model accounts for the voltage transients of the load busses and for this general model, it is shown that the system satisfies the law of conservation of energy. An efficient algorithm for determining the stability of the system for a given disturbance is described. Results of simulation of the system studied by El-Abiad and Nagappan [2] are included and it is shown that due to the fluctuations in the system voltages, the commonly used energy function over estimates the energy of the system during system transients.

关键词： Power system transients Transient analysis Stability analysis Power system analysis computing Power system stability Power system modeling Load modeling Potential energy Voltage Propagation losses

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