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Optimal Output Tracking Control and Stabilization of Networked Control Systems with Packet Losses

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Journal of Systems Science & Complexity 2021年第2期34卷 602-617页

作者： LIU yue HAN Chunyan School of Electrical Engineering University of JinanJinan 250022China

This paper studies the optimal output tracking control and stabilization for networked control systems with packet losses via output feedback *** finite-horizon and infinite-horizon cases are *** the finite-horizon case,the authors introduce an augmented system according to the state variable and the reference trajectory for the first *** on a set of difference Riccati equations,an optimal output feedback tracking controller is proposed by applying the stochastic maximum *** an optimal estimator is *** the infinite-horizon case,a necessary and sufficient condition for the stabilization of the system is *** an optimal output feedback stabilizing tracking controller is obtained by establishing a set of algebraic Riccati ***,numerical examples are given to verify the proposed results.

关键词： Networked control system output feedback control packet losses stabilization tracking control

8-Ranks of Class Groups of Quadratic Number Fields and Their Densities

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Acta Mathematica Sinica,English Series 2011年第7期27卷 1419-1434页

作者： Qin yue Department of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China

For F = Q（√εpq）, ε∈ {±1,±2}, primes -p ≡ q ≡ 1 mod 4, we give the necessary and sufficient conditions for 8-ranks of narrow class groups of F equal to 1 or 2 such that we can calculate their densities. All results are stated in terms of congruence relations of p, q modulo 2^n, the quartic residue symbol （1/q）4 and binary quadratic forms such as q^h（-2p）/^4 = x^2 ＋ 2py^2 where h（-2p） is the class number of Q（√-2p）. The results are very useful for numerical computations.

关键词： Class group unramified extension quartic residue

Constructing of highly porous thermoelectric structures with improved thermoelectric performance

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Nano Research 2021年第10期14卷 3608-3615页

作者： Peilei He yue Wu Department of Chemical and Biological Engineering Iowa State UniversityAmesIowa 50011USA

As more than 60%of worldwide consumed energy is unused and becomes waste heat every year,high-efficiency waste heat to power technologies are highly demanded for the conversion of wasted heat to *** which can convert the wasted heat directly into electricity represent a promising approach for energy *** technology has existed for several decades,but its usage has been limited due to low *** advances in nanotechnology have enabled the improving of thermoelectric properties which open up the thermoelectrics’feasibility in *** this paper,we present an overview of recent progress in increasing the porosity of thermoelectric materials from atomic scale to microscale,leading to the enhancement of figure of merit.

关键词： thermoelectrics semiconductors porous structures thermal conductivity

Measuring Policy Performance in Online Pricing with Offline Data:Worst-case Perspective and Bayesian Perspective

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Journal of Systems Science and Systems Engineering 2023年第3期32卷 352-371页

作者： yue Wang Zeyu Zheng Department of Computational Medicine University of CaliforniaLos AngelesCA 90095USA Institut des Hautes Etudes Scientifiques Bures-sur-YvetteEssonne 91440France Department of Industrial Engineering and Operations Research University of CaliforniaBerkeleyCA 94720USA

The problems of online pricing with offline data,among other similar online decision making with offline data problems,aim at designing and evaluating online pricing policies in presence of a certain amount of existing offline *** evaluate pricing policies when offline data are available,the decision maker can either position herself at the time point when the offline data are already observed and viewed as deterministic,or at the time point when the offline data are not yet generated and viewed as *** write a framework to discuss how and why these two different positions are relevant to online policy evaluations,from a worst-case perspective and from a Bayesian *** then use a simple online pricing setting with offline data to illustrate the constructions of optimal policies for these two approaches and discuss their differences,especially whether we can decompose the searching for the optimal policy into independent subproblems and optimize separately,and whether there exists a deterministic optimal policy.

关键词： Online pricing offline data performance measure worst-case approach Bayesian approach

Exponential mean-square stability of the improved split-step theta methods for non-autonomous stochastic differential equations

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Science China Mathematics 2017年第4期60卷 735-744页

作者： yue Chao School of Economics and Trade Zhengzhou University of Aeronautics Zhengzhou 450015 China

We consider the mean-square stability of the so-called improved split-step theta method for stochastic differential equations. First, we study the mean-square stability of the method for linear test equations with real parameters. When 0 ≥ 3/2, the improved split-step theta methods can reproduce the mean-square stability of the linear test equations for any step sizes h 〉 0. Then, under a coupled condition on the drift and diffusion coefficients, we consider exponential mean-square stability of the method for nonlinear non-autonomous stochastic differential equations. Finally, the obtained results are supported by numerical experiments.

关键词： stochastic differential equations mean-square stability improved split-step theta methods expo-nential mean-square stability

Dynamic Scheduling and Path Planning of Automated Guided Vehicles in Automatic Container Terminal

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IEEE/CAA Journal of Automatica Sinica 2022年第11期9卷 2005-2019页

作者： Lijun yue Houming Fan the Department of Transportation Engineering Dalian Maritime UniversityDalian 116026China

The uninterrupted operation of the quay crane(QC)ensures that the large container ship can depart port within laytime,which effectively reduces the handling cost for the container terminal and ship *** QC waiting caused by automated guided vehicles(AGVs)delay in the uncertain environment can be alleviated by dynamic scheduling optimization.A dynamic scheduling process is introduced in this paper to solve the AGV scheduling and path planning problems,in which the scheduling scheme determines the starting and ending nodes of paths,and the choice of paths between nodes affects the scheduling of subsequent *** work proposes a two-stage mixed integer optimization model to minimize the transportation cost of AGVs under the constraint of laytime.A dynamic optimization algorithm,including the improved rule-based heuristic algorithm and the integration of the Dijkstra algorithm and the Q-Learning algorithm,is designed to solve the optimal AGV scheduling and path schemes.A new conflict avoidance strategy based on graph theory is also proposed to reduce the probability of path conflicts between *** experiments are conducted to demonstrate the effectiveness of the proposed model and algorithm over existing methods.

关键词： Automated container terminal dynamic scheduling path planning Q-Learning algorithm rule-based heuristic algorithm

Cylindrical KP-Burgers Equation for Two-Temperature Ions in Dusty Plasma with Dissipative Effects and Transverse Perturbations

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Communications in Theoretical Physics 2006年第2X期46卷 313-318页

作者： WANG yue-yue ZHANG Jie-Fang Institute of Nonlinear Physics Zhejiang Normal University Jinhua 321004 China

In this paper, the cylindrical KP-Burgers equation with variable coefficient for two-temperature ions in unrsagnified dusty plasma with dissipative effects and transverse perturbations in cylindrical geometry is derived by using the standard reductive perturbation technique. With the help of variable-coeiffcient generalized projected Ricatti equation expansion method, the cylindrical KP-Burgers equation is solved and shock wave solution is obtained. The effecta of some important parameters to the shock wave solution are illustrated from the wave evolution figures. The effects caused by dissipation and transverse perturbations are also discussed.

关键词： dusty plasma KP-Burgers equation shock wave

Elite Dung Beetle Optimization Algorithm for Multi-UAV Cooperative Search in Mountainous Environments

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Journal of Bionic Engineering 2024年第4期21卷 1677-1694页

作者： Xiaoyong Zhang Wei yue The College of Marine Electrical Engineering Dalian Maritime UniversityDalian116026China

This paper aims to address the problem of multi-UAV cooperative search for multiple targets in a mountainous environment,considering the constraints of UAV dynamics and prior environmental ***,using the target probability distribution map,two strategies of information fusion and information diffusion are employed to solve the problem of environmental information inconsistency caused by different UAVs searching different areas,thereby improving the coordination of UAV ***,the task region is decomposed into several high-value sub-regions by using data clustering *** on this,a hierarchical search strategy is proposed,which allows precise or rough search in different probability areas by adjusting the altitude of the aircraft,thereby improving the search ***,the Elite Dung Beetle Optimization Algorithm(EDBOA)is proposed based on bionics by accurately simulating the social behavior of dung beetles to plan paths that satisfy the UAV dynamics constraints and adapt to the mountainous terrain,where the mountain is considered as an obstacle to be ***,the objective function for path optimization is formulated by considering factors such as coverage within the task region,smoothness of the search path,and path *** effectiveness and superiority of the proposed schemes are verified by the simulation.

关键词： Mountainous environment Multi-UAV cooperative search Environment information consistency Elite dung beetle optimization algorithm(EDBOA) Path planning

QM/MM Investigations on the Bioluminescent Decomposition of Coelenterazine Dioxetanone in Obelin

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Chemical Research in Chinese Universities 2018年第5期34卷 758-766页

作者： yue Ling Key Laboratory for Non-equilibrium Synthesis and Modulation of Condenaed Matter Ministry of Education School of Sciences Xi 'an Jiaotong University Xi "an 710049 P. R. China

The bioluminescent mechoafism of colenterazine dioxetanone（CZD） in the photoprotein of Obelia（obelin） was investigated by the combined quantum and molecular mechanics（QM/MM） method at TD-DFT level, which involved the real protein environment in decomposition of 1,2-dioxetanones. The anionic decomposition of CZD in （CZD＋H2O）- model can go through a charge transfer（CT） catalyzed asynchronous-concerted process, which can be elucidated by the gradual reversible CT initiated luminescence（GRCTIL） mechanism. The neutral CZD in （CZDH＋H2O） decomposes through an uncatalyzed non-CT biradical process. The anionic decomposition catalyzed by CT, in which the S0/S1 surface ＂double crossing＂ hence has ability to provide high quantum yield of singlet chemiexcitation is thus more possible in bioluminescence of photoprotein.

关键词： 1,2-Dioxetanone Bioluminescence Coelenterazine Photoprotein Quantum and molecular mechanics