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International conference of Electronics, Communication and Aerospace Technology (ICECA)

作者： Yaofeng Zhan Huijuan Liao Hunan Engineering Laboratory for control and optimization of PV systems Xiangtan Hunan China Hunan vocational institute of technology Xiangtan Hunan China

ISBN: (纸本)9781665435253

As the infrastructure of urban buildings, the building energy system is an important source of building energy consumption and carbon emissions. With the promotion of national energy-saving and emission-reduction policies, more and more new energy and renewable energy utilization technologies are put into use in the construction field. The degree of impact of these technologies on the environment from the perspective of global warming requires a reasonable evaluation. Based on big data, this paper studies the construction of the carbon emission model of the building energy system based on big data, and optimizes the calculation accuracy of carbon emission.

关键词： Analytical models Renewable energy sources Energy consumption Architecture Buildings Carbon dioxide Big Data

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Effectiveness evaluation on direct shipping strategy

Effectiveness evaluation on direct shipping strategy

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IEEE International Conference on systems, Man and Cybernetics

作者： Jianxiang Li Haoxun Chen Feng Chu Department of Automatic Control Beijing Institute of Technology Beijing China Industrial Systems Optimization Laboratory University of Technology of Troyes Troyes France

This paper considers the infinite horizon inventory routing problem for one-warehouse multi-retailer distribution systems. We focus on developing an analytic approach for evaluating the effectiveness of direct shipping strategy where each vehicle serves only one retailer in one delivery at its optimal replenishment rate. Explicit formula is obtained in terms of a few of easily measurable parameters. The formula allows the effectiveness of direct shipping strategy to be evaluated quickly using even a hand calculator. We demonstrate that the effectiveness of direct shipping is at least the square root of the smallest utilization ratio of vehicle capacity. This implies that direct shipping is 100% (respectively 94.86%) effective whenever the smallest utilization ratio is 100% (respectively 90%). This insight can help a firm answer questions such as: under what conditions does direct shipping perform well, and why? How well does direct shipping perform in a specific situation.

关键词： Vehicles Routing Transportation Stochastic processes Infinite horizon Paper technology Logistics Laboratories Cost function Shipbuilding industry

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Limit-Cycle-Based Design of Formation control for Mobile Agents

Limit-Cycle-Based Design of Formation Control for Mobile Age...

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作者： Wang, Chen Xia, Weiguo Xie, Guangming National Engineering Research Center for Software Engineering Key Lab. of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education School of Control Science and Engineering Dalian University of Technology Dalian116024 China State Key Laboratory of Turbulence and Complex Systems Intelligent Biomimetic Design Lab College of Engineering Peking University Beijing China

In this article, we study the formation problem for a group of mobile agents in a plane, in which the agents are required to maintain a distribution pattern, as well as to rotate around or remain static relative to a static/moving target. The prescribed distribution pattern is a class of general formations where the distances between neighboring agents or the distances between each agent and the target do not need to be equal. Each agent is modeled as a double integrator and can merely perceive the relative information of the target and its neighbors, and the acceleration of the target. In order to solve the formation problem, a limit-cycle-based controller design is delivered. We divide the overall control objective into two subobjectives, where the first is target circling that each agent keeps its own desired distance to the static/moving target as well as rotating around or remaining static relative to the target as expected, and the second is distribution adjustment that each agent maintains the desired distance to its neighbors. Then, we propose a controller comprised of two parts, where a limit cycle oscillator named a converging part is designed to deal with the first subobjective, while a layout part is introduced to address the second subobjective. One key merit of the controller is that it can be implemented by each agent in its local frame so that only local information is utilized without knowing global information. Theoretical analysis of the convergence to the desired formation, of which the agents are required to be evenly distributed on a circle around the target, is provided for the multiagent system under the proposed controller. Numerical simulations are given to validate the effectiveness of the proposed controller for the cases of general formations, and to show that no collision between agents ever takes place throughout the system's evolution. © 1963-2012 IEEE.

关键词： Multi agent systems

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Design of beta neural systems using differential evolution

Design of beta neural systems using differential evolution

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IEEE International Conference on systems, Man and Cybernetics

作者： S. Moalla A.M. Alimi N. Derbel Laboratory of Intelligent Control ENIS. Department oJEIectrica1 Engineering Optimization of Complex Systems Universiw of Sfax Sfax Tunisia

Differential evolution (DE) is an exceptionally fast and robust population based search algorithm that is able to locate near optimal solutions to difficult problems. Beside its good convergence properties, DE is very simple to understand and to implement. This paper describes an evolutionary neural network-training algorithm for beta basis function neural networks (BBFNN) using DE. Application to function approximation problems are considered to demonstrate the performance of the BBFNN and of the evolutionary algorithm.

关键词： Neural networks Function approximation Robustness Radial basis function networks Machine intelligence Laboratories Intelligent control Approximation algorithms Evolutionary computation Multi-layer neural network

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Delay-dependent synchronization criteria for delayed chaotic systems with parameter mismatches

Delay-dependent synchronization criteria for delayed chaotic...

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作者： He, Wangli Qian, Feng Han, Qing-Long Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai 200237 China Centre for Intelligent and Networked Systems And School of Information and Communication Technology Central Queensland University Rockhampton 4702 Australia

ISBN: (纸本)9789881725592

This paper investigates synchronization between two delayed chaotic systems with parameter mismatches. Based on Lyapunov functional approach and generalized Halanay inequality, some delay-dependent criteria are derived to guarantee the synchronization error converges to a bounded ball, whose radius, referred to as the error level, is also estimated. Moreover, an optimization algorithm is established for error level estimate, and the feedback matrix design is also addressed. Finally, a chaotic neural network is used to illustrate the effectiveness of the proposed method. © 2011 Chinese Assoc of Automati.

关键词： Synchronization

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Cascaded Nonlinear MPC for Realtime Quadrotor Position Tracking ⁎

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IFAC-PapersOnLine 2020年第2期53卷 7026-7032页

作者： Jonas Schlagenhauf Peter Hofmeier Thilo Bronnenmeyer Reinhart Paelinck Moritz Diehl Systems Control and Optimization Laboratory Department of Microsystems Engineering (IMTEK) University of Freiburg Georges-Köhler-Allee 102 79110 Freiburg Germany Kiteswarms GmbH 79427 Eschbach Germany

In this paper we present a cascaded control approach using nonlinear model-predictive controllers for both stages. Using a quadrotor platform as an exemplary target plant with fast nonlinear dynamics, a realtime capable design is proposed that does not require the plant dynamics to exhibit clearly separable time constants as in classical cascaded control. In contrast to similar work we employ NMPC for the inner control loop instead of classical control approaches such as PID control, allowing to keep predictive properties as well as explicit constraint handling. We demonstrate via Monte-Carlo simulations that our design is able to achieve a significantly better position tracking performance of the quadrotor while being equally computationally expensive compared to monolithic position tracking NMPC.

关键词： model predictive control cascaded control realtime control modeling for control optimization quadrotor control

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Event-based NMPC for networked control systems over UDP-like communication channels

Event-based NMPC for networked control systems over UDP-like...

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作者： Varutti, Paolo Findeisen, Rolf Laboratory for Systems Theory and Automatic Control Institute for Automation Engineering Otto-von-Guericke University Magdeburg Germany Intl. Max Planck Res. Sch. for Analysis Des. and Optimization in Chem. and Biochem. Proc. Eng. Magdeburg Germany

ISBN: (纸本)9781457700804

Networked controlled systems have recently received attention from the industry since they allow for flexibility and cost reduction. However, due to the fact that communication media can be subject to random delays, packet dropouts, jitters and other uncertainties, destabilization of the closed loop system can occur. Model predictive control has demonstrated to be a valid solution to cope with these issues. On the other hand, it typically relies on TCP-like (or connection oriented) protocols, i.e. either the received or the lost information is acknowledged. In this work, we propose an event-based model predictive control algorithm for nonlinear continuous time systems subject to state and input constraints which is based on UDP-like communication. We show that without the use of any acknowledgment or error message we can derive a compensation algorithm, which used in combination with the controller, under mild conditions, guarantees closed loop stability. The solution is applied to a continuous stirred tank reactor where an exothermic irreversible reaction takes place. The simulations show the effectiveness of the presented algorithm. © 2011 AACC American Automatic control Council.

关键词： Model predictive control

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Distributed State and Fault Fusion Filtering for Nonlinear systems Subject to Quantization Effects

Distributed State and Fault Fusion Filtering for Nonlinear S...

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IEEE International Conference on control Science and systems Engineering (CCSSE)

作者： Zhibin Hu Jun Hu Junhua Du Yuna Zhao Department of Mathematics Heilongjiang Provincial Key Laboratory of Optimization Control and Intelligent Analysis for Complex Systems Harbin University of Science and Technology Harbin China

In this paper, the distributed state and fault fusion filtering problem is discussed for a class of multi-sensor networked systems (MSNSs) with randomly occurring quantized measurements (ROQMs). A series of random variables obeying the Bernoulli distribution are adopted to depict the phenomenon of the ROQMs and the fault signal is assumed to appear with an unknown constant type. The aim of this paper is to provide the state and fault fusion filtering algorithm by using the inverse covariance intersection fusion method. Moreover, a proper filter gain is designed by minimizing the local upper bound of filtering error covariance. Finally, the effectiveness of the presented fusion method is verified by using an illustrative example.

关键词： Upper bound Quantization (signal) Filtering Filtering algorithms systems engineering and theory Numerical simulation control systems

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Forming Circle Formations of Multi-agent systems Under Actuator Faults 5th

Forming Circle Formations of Multi-agent Systems Under Actu...

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5th Chinese Conference on Swarm Intelligence and Cooperative control, CCSICC 2021

作者： Liu, Jiajun Ru, Xinfeng Xia, Weiguo Wang, Chen China National Aeronautical Radio Electronic Research Institute and National Key Laboratory of Science and Technology on Avionics System Integration Shanghai China Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education and School of Control Science and Engineering Dalian University of Technology Dalian China National Engineering Research Center of Software Engineering and the State Key Laboratory of Turbulence and Complex Systems Intelligent Biomimetic Design Lab College of Engineering Peking University Beijing China

ISBN: (纸本)9789811939976

A distributed fault-tolerant formation control law is designed in this paper for multi-agent systems under external disturbances and actuator faults including time-varying loss of effectiveness faults. The initial position of each agent is already on a circle and the control purpose is to form a desired formation on this circle. Based on this local information, a distributed adaptive formation control law is designed by employing the congelation of variables method to deal with time-varying actuator faults. Finally, a simulation example is given to verify the effectiveness of the adaptive fault-tolerant control design method. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Multi agent systems

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Study on anode material of CoδFe1-δOx-Sm0.2Ce0.8O1.9 for solid oxide fuel cell 7

Study on anode material of CoδFe1-δOx-Sm0.2Ce0.8O1.9 for s...

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7th International Conference on Energy Technology and Materials Science, ICETMS 2021

作者： Dong, Runze Yang, Pu Shao, Tianqi Wang, Ruochen Li, Ping Fu, Dong Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science and Engineering North China Electric Power University Baoding071003 China MOE Key Laboratory of Resources and Environmental Systems Optimization North China Electric Power University Beijing102206 China

This paper mainly explores the anode properties of CoδFe1-δOx-Sm0.2Ce0.8O1.9 (SDC) (δ=0, 0.2, 0.5, 0.8, and 1) for solid oxide fuel cell (SOFC). The composite anode materials were synthesized by sol-gel method, and the XRD technique was used to characterize structural properties. After H2 reduction at 700 oC, the CoδFe1-δOx oxides were reduced to Co, Fe metal or Co-Fe alloy. The symmetric cells were fabricated with CoδFe1-δOx-SDC as the electrodes and SDC-carbonate as the electrolyte. At 700 oC, the symmetric cell with Co0.5Fe0.5Ox-SDC electrodes showed the lowest polarization resistance and the symmetric cell with Co0.2Fe0.8Ox-SDC showed the largest polarization resistance. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Anodes

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