检索结果-内蒙古大学图书馆

International Conference on Ecological Vehicles and Renewable Energies (EVER)

作者： Johanna Salazar José Domingo Álvarez Hervás Jose Luis Guzmán Fernando Tadeo Systems Engineering and Automatic Control Department University of Valladolid Valladolid Spain Dpto. Lenguajes y Computación Universidad de Almería Almeria Spain

The control-oriented modelling of a solar air conditioning system already installed in a building, and its simulation, with the objective of testing different control strategies is presented. Models of these components are presented, specifically developed for optimization of energy consumption; their simulation at different times of the year is carried out in order to validate the models.

关键词： Generators Cooling Heating

来源：评论

学校读者我要写书评

暂无评论

Optimal Leader-Follower control for Crowd Evacuation

Optimal Leader-Follower Control for Crowd Evacuation

引用

IEEE Annual Conference on Decision and control

作者： Yuecheng Yang Dimos V. Dimarogonas Xiaoming Hu Optimization and Systems Theory Department of Mathematics Royal institute of Technology (KTH) 100 44 Stockholm Sweden Automatic Control Lab School of Electrical Engineering KTH

ISBN: (纸本)9781467357159

Crowd evacuation has become a primary safety issue in many public places in a metropolitan area. Experts from different fields have worked on modeling and designing evacuating policies by using different tools and methods. In this paper, an optimal control approach is used to derive guiding strategies for the rescue agents under different circumstances. Various optimal control problems are formulated to handle different assumptions of the scenario. Both the analytic solutions and the numerical simulation confirm the efficiency of this approach, which in turn can be potentially used as decision-making support in practical applications.

关键词： Evacuation Safety Problem decision making support designs and models Optimal control numerical simulation metropolitan areas

来源：评论

学校读者我要写书评

暂无评论

Optimal control of Partially Observable Discrete Time Stochastic Hybrid systems for Safety Specifications

Optimal Control of Partially Observable Discrete Time Stocha...

引用

American control Conference

作者： Jerry Ding Alessandro Abate Claire Tomlin Department of Electrical Engineering and Computer Sciences University of California at Berkeley Delft Center for Systems and Control Delft University of Technology

ISBN: (纸本)9781479901777

This paper describes a theoretical framework for the design of controllers to satisfy probabilistic safety specifications for partially observable discrete time stochastic hybrid systems. We formulate the problem as a partial information stochastic optimal control problem, in which the objective is to maximize the probability that the state trajectory remains within a given safe set in the hybrid state space, using observations of the history of inputs and outputs. It is shown that this optimal control problem, which has a multiplicative payoff structure, is equivalent to a terminal payoff problem when the state space is augmented with a binary random variable capturing the safety of past state evolution. This allows us to derive a sufficient statistic for the probabilistic safety problem as a set of Bayesian filtering equations updating a conditional distribution on the augmented state space, as well as an abstract dynamic programming algorithm for computing the maximal probability of safety and an optimal control policy.

关键词： state space hybrid systems safety specification Optimal control Safety Problem discrete-time state trajectory control strategy

来源：评论

学校读者我要写书评

暂无评论

A Survey on Energy Efficiency in Cellular Networks

引用

Communications and Network 2013年第3期5卷 654-660页

作者： Xiaochen Su Enchang Sun Meng Li F. Richard Yu Yanhua Zhang College of Electronic Information and Control Engineering Beijing University of Technology Beijing China College of Electronic Information and Control Engineering Beijing University of Technology Beijing China Department of Systems and Computer Eng. Carleton University Ottawa ON Canada

With the continuous increase of user requirement, the Information and Communication Technology (ICT) has developed rapidly. As a result, both capacity and coverage performances have been improved, and at the same time, the communication networks have been more energy-intensive. In order to improve the energy efficiency of cellular networks, the green communication must be realized in the future networks. In this article, we present a short survey on energy-efficient technology of cellular networks. Moreover, we classify them into three categories based on theirapplication scenarios: energy-efficient architectures, energy-efficient resource management and energy-efficient radio technologies. For the first scenario, the applications of relay, Coordinated Multiple Points (CoMP) and heterogeneous network are discussed in detail. For the second scenario, the switching off scheme will be introduced as an emphasis of this part. And for the third scenario, the Multiple-Input Multiple-Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) will be introduced as the representatives of the Energy-Efficient Radio Technologies. Finally, based on the technologies introduced above, a prospect forecast of the energy-efficient wireless cellular network is presented.

关键词： Green Wireless Communication Energy-Efficient CoMP Relay Switching off Scheme

来源：评论

学校读者我要写书评

暂无评论

A Survey on Energy Efficiency in Cellular Networks

A Survey on Energy Efficiency in Cellular Networks

引用

The 9th International Conference on Wireless Communications,Networking and Mobile Computing(WICOM 2013)

作者： Xiaochen Su Enchang Sun Meng Li F.Richard Yu Yanhua Zhang College of Electronic Information and Control Engineering Beijing University of Technology Department of Systems and Computer Eng. Carleton University

With the continuous increase of user requirement, the Information and Communication Technology (ICT) has developed rapidly. As a result, both capacity and coverage performances have been improved, and at the same time, the communication networks have been more energy-intensive. In order to improve the energy efficiency of cellular networks, the green communication must be realized in the future networks. In this article, we present a short survey on energy-efficient technology of cellular networks. Moreover, we classify them into three categories based on their application scenarios: energy-efficient architectures, energy-efficient resource management and energy-efficient radio technologies. For the first scenario, the applications of relay, Coordinated Multiple Points (CoMP) and heterogeneous network are discussed in detail. For the second scenario, the switching off scheme will be introduced as an emphasis of this part. And for the third scenario, the Multiple-Input Multiple-Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) will be introduced as the representatives of the Energy-Efficient Radio Technologies. Finally, based on the technologies introduced above, a prospect forecast of the energy-efficient wireless cellular network is presented.

关键词： Green Wireless Communication Energy-Efficient CoMP Relay Switching off Scheme

来源：评论

学校读者我要写书评

暂无评论

Obstacle avoidance in formation using navigation-like functions and constraint based programming

Obstacle avoidance in formation using navigation-like functi...

引用

2013 IEEE/RSJ International Conference on Intelligent Robots and systems

作者： Michele Colledanchise Dimos V. Dimarogonas Petter Ögren Centre for Autonomous Systems Computer Vision and Active Perception Lab School of Computer Science and Communication The Royal Institute of Technology - KTH Stockholm Sweden Centre for Autonomous Systems Automatic Control Lab School of Electrical Engineering The Royal Institute of Technology - KTH Stockholm Sweden

In this paper, we combine navigation function-like potential fields and constraint based programming to achieve obstacle avoidance in formation. Constraint based programming was developed in robotic manipulation as a technique to take several constraints into account when controlling redundant manipulators. The approach has also been generalized, and applied to other control systems such as dual arm manipulators and unmanned aerial vehicles. Navigation functions are an elegant way to design controllers with provable properties for navigation problems. By combining these tools, we take advantage of the redundancy inherent in a multi-agent control problem and are able to concurrently address features such as formation maintenance and goal convergence, even in the presence of moving obstacles. We show how the user can decide a priority ordering of the objectives, as well as a clear way of seeing what objectives are currently addressed and what are postponed. We also analyze the theoretical properties of the proposed controller. Finally, we use a set of simulations to illustrate the approach.

关键词： Navigation Convergence Programming Collision avoidance Robots Maintenance engineering

来源：评论

学校读者我要写书评

暂无评论

Adaptively Constrained Stochastic Model Predictive control for Closed-Loop Constraint Satisfaction

Adaptively Constrained Stochastic Model Predictive Control f...

引用

American control Conference

作者： Frauke Oldewurtel David Sturzenegger Peyman Mohajerin Esfahani Goran Andersson Manfred Morari John Lygeros Power Systems Laboratory Department of Electrical Engineering Swiss Federal Institute of Technology in Zurich (ETHZ) Switzerland Automatic Control Laboratory Department of Electrical Engineering Swiss Federal Institute of Technology in Zurich (ETHZ) Switzerland

ISBN: (纸本)9781479901777

Stochastic Model Predictive control (SMPC) for discrete-time linear systems subject to additive disturbances with chance constraints on the states and hard constraints on the inputs is considered. Current chance constrained MPC methods--based on analytic reformulations or on sampling approaches--tend to be conservative partly because they fail to exploit the predefined violation level in closed-loop. For many practical applications, this conservatism can lead to a loss in performance. We propose an adaptive SMPC scheme that starts with a standard conservative chance constrained formulation and then on-line adapts the formulation of constraints based on the experienced violation frequency. Using martingale theory we establish guarantees of convergence to the desired level of constraint violation in closed-loop for a special class of linear systems. Comments are given on how to extend this to a broader class of (non-)linear systems. The developed methodology is demonstrated with an illustrative example.

关键词： Stochastic model predictive control Chance constraints Adaptive control Closed-loop violation

来源：评论

学校读者我要写书评

暂无评论

An Adaptive control Strategy for Managing Concurrent Service Requests in Service-Based systems

An Adaptive Control Strategy for Managing Concurrent Service...

引用

IEEE Annual computer Software and Applications Conference Workshops (COMPSACW)

作者： Wen-Long Zhu Bei-Bei Yin Kai-Yuan Cai Dazhi Huang Stephen S. Yau Department of Automatic Control Beijing University of Aeronautics and Astronautics Beijing China School of Computing Informatics & Decision Systems Engineering Arizona State University Tempe AZ USA

Service-Oriented Architecture (SOA) has attracted substantial research effort over the past decade. In service-based systems, where multiple services providing the same functionality are available, it is necessary to select the appropriate services to be used in service composition to provide better quality of service (QoS) for service consumers. In order to select the best service composition for concurrent service requests, we present an adaptive control strategy which performs service selection based on the historical usage information of all the candidate services. A case study of a data stream management system is presented to validate the effectiveness of the adaptive control strategy, and examine the effect of the concurrency level on the process of the strategy's decision.

关键词： Adaptive control Quality of service Concurrent computing Digital audio players Time factors Software Process control

来源：评论

学校读者我要写书评

暂无评论

control Lyapunov function based feedback design for quasi-polynomial systems

引用

IFAC Proceedings Volumes 2013年第23期46卷 128-133页

作者： Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary Process Control Research Group Computer and Automation Research Institute HAS Budapest Hungary

The aim of this work is to present an entropy-like Lyapunov function based dynamic feedback design technique for quasi-polynomial and Lotka-Volterra systems. It is shown, that the dynamic feedback design problem is equivalent to the feasibility of a bilinear matrix inequality. The problem is also formulated as a control Lyapunov function based feedback design when the Lyapunov function parameters are given, the solution of this problem can be obtained by solving a linear matrix inequality. The developed method is illustrated on a simple numerical example.

关键词： Lyapunov stability nonlinear systems stabilizing feedback dynamic feedback optimization problems

来源：评论

学校读者我要写书评

暂无评论

Tuning and experimental evaluation of a likelihood-based engine knock controller

Tuning and experimental evaluation of a likelihood-based eng...

引用

52nd IEEE Conference on Decision and control, CDC 2013

作者： Thomasson, Andreas Eriksson, Lars Lindell, Tobias Peyton Jones, James C. Spelina, Jill Frey, Jesse Division of Vehicular Systems Department of Electrical Engineering Linkoping University Linkoping SE-581 83 Sweden Center for Nonlinear Dynamics and Control Department of Electrical and Computer Engineering Villanova University Villanova PA 19085 United States Center for Nonlinear Dynamics and Control Villanova University Villanova PA 19085 United States Science Technology Engineering and Mathematics Division Delaware County Community College Media PA 19063 United States Department of Mathematics and Statistics Villanova University Villanova PA 19085 United States

ISBN: (纸本)9781467357173

A new likelihood-based stochastic knock controller, that achieves a significantly improved regulatory response relative to conventional strategies, while also maintaining a rapid transient response is presented. Up until now it has only been evaluated using simulations and the main contribution here is the implementation and validation of the knock controller on a five cylinder engine with variable compression ratio. Furthermore, an extension of the fast response strategy and a re-tuning of the controller is shown to improve performance. The controller is validated with respect to its robustness to changes in engine operating condition as well as compression ratio. The likelihood-based controller is demonstrated in engine tests and compared to a conventional controller and it is shown that it is able to operate closer to the knock limit with less variations in control action without increasing the risk of engine damage. © 2013 IEEE.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：