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2011 IEEE International Conference on Automation Science and Engineering最新文献

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Potential field-based microscopic modeling of road networks with heterogeneous vehicular traffic 基于势场的异构车辆交通路网微观建模
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042438
R. Falconi, Andrea Paoli, C. Bonivento
Achieving sustainable mobility is one of the challenges of the 21st century; a crucial goal is to mitigate traffic congestions while improving safety. The increasing needs for efficient traffic management strategies and for efficient, reliable and safe traffic infrastructures is changing the point of view on mathematical models from bare simulation tools to sophisticated design and optimization tools. Moreover the attention is rapidly moving the focus from centralized supervision strategies, to decentralized control strategies. In this paper we present a modular microscopic mathematical model for heterogeneous vehicular traffic on road networks, able to describe vehicles interactions with the network infrastructure (roads, traffic lights, etc.) and with other vehicles according to the well known potential fields approach. The modeling tool is able to capture different vehicles interactions and traffic phenomena such as queues, overtaking and car crashes. The obtained modeling tool has a strong control-oriented and optimization-oriented characterization and appears promising for traffic supervision and control design and for addressing optimization problems when designing the traffic infrastructure.
实现可持续交通是21世纪的挑战之一;一个关键的目标是在提高安全性的同时缓解交通拥堵。对高效的交通管理策略和高效、可靠、安全的交通基础设施的日益增长的需求正在改变对数学模型的观点,从单纯的模拟工具到复杂的设计和优化工具。此外,人们的注意力正迅速从集中监管策略转向分散控制策略。在本文中,我们提出了一个模块化的微观数学模型,用于道路网络上的异构车辆交通,能够描述车辆与网络基础设施(道路,交通灯等)以及根据众所周知的势场方法与其他车辆的相互作用。该建模工具能够捕捉不同车辆的相互作用和交通现象,如排队、超车和撞车。所获得的建模工具具有较强的面向控制和面向优化的特性,在交通监督控制设计和解决交通基础设施设计时的优化问题方面具有前景。
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引用次数: 1
Near optimal furnace tool allocation with batching and waiting time constraints 在有批量和等待时间限制的情况下,接近最优的炉具分配
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042507
Yu-Ting Kao, Shun-Cheng Zhan, Shi-Chung Chang, Jen-Hsuan Ho, Peng Wang, P. Luh, Simon Wang, Fenix Wang, Joey Chang
Furnace tools often constitute a bottleneck of a semiconductor wafer fab. They are characterized by long processing times with batching requirements. The problem is further complicated by stringent limitations on waiting times before furnace processing and the heterogeneous tool configuration. A novel integer programming model of allocating furnace tools to process steps over time for achieving production targets is first formulated. The formulation adopts difference equations to describe flows of wafers-in-process (WIPs) and availability of individual tools. Waiting time limitation is captured by an inequality for every time slot that the number of wafers processed in the next time slots within the limitation must be no less than the available WIPs of the current time slot. Constraints on batching decision couple among constraints of wafer flow, tool availability and bounds of batch size. After converting all the constraints to linear forms, an optimization tool suite is then applied to solving test problems derived from a real fab with a stopping criterion of no more than 5% difference from optimality. Comparisons with a currently practiced heuristic show that the near optimal furnace allocations lead to 18.5% more processing in average and 39.6% shorter average waiting time in certain cases than those of the heuristic. Computation times are all within 30 seconds over a personal computer with a Intel P8700@2.53 GHz CPU. Such computation efficiency indicates a strong potential for applications to dynamic allocations in a fab.
熔炉工具通常构成半导体晶圆厂的瓶颈。它们的特点是处理时间长,需要批处理。对炉前加工的等待时间的严格限制和异质刀具配置使问题进一步复杂化。为实现生产目标,提出了一种新的炉具随时间分配到工艺步骤的整数规划模型。该公式采用差分方程来描述在制品的流动和单个工具的可用性。等待时间限制通过每个时隙的不等式来捕获,即在限制内的下一个时隙中处理的晶圆数量必须不少于当前时隙的可用wip。批处理决策约束在晶圆流约束、工具可用性约束和批大小约束之间耦合。在将所有约束转换为线性形式后,然后应用优化工具套件来解决来自真实晶圆厂的测试问题,其停止准则与最优性的差异不超过5%。与目前实践的启发式方法的比较表明,在某些情况下,接近最优的炉分配比启发式方法平均多处理18.5%,平均等待时间缩短39.6%。使用英特尔P8700@2.53 GHz CPU的个人计算机的计算时间都在30秒之内。这样的计算效率表明了在晶圆厂动态分配中应用的巨大潜力。
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引用次数: 9
A new sliding mode controller for the DC to DC flyback converter 一种新的直流反激变换器滑模控制器
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042474
M. Seker, E. Zergeroglu
In this work, we have investigated the dynamics behavior and the control problem of a specific type of DC to DC converters known as the flyback converter. Flyback converters are basically a transformer-isolated version of the standard buck-boost converter. As opposed to the classical sliding mode controllers used for DC/DC converters, we proposed an alternative sliding mode controller that takes the combination of the output voltage and the intermediate transformer output current as the error signal to be regulated. Simulation results are presented to illustrate the effectiveness of the proposed method.
在这项工作中,我们研究了一种称为反激变换器的特定类型的DC - DC变换器的动力学行为和控制问题。反激变换器基本上是标准降压-升压变换器的变压器隔离版本。针对DC/DC变换器中使用的经典滑模控制器,我们提出了一种备选滑模控制器,该控制器将输出电压和中间变压器输出电流的组合作为需要调节的误差信号。仿真结果验证了该方法的有效性。
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引用次数: 8
Integer programming and ant colony optimization for planning intermodal freight transportation operations 多式联运货物运输作业规划的整数规划与蚁群优化
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042496
D. Anghinolfi, M. Paolucci, S. Sacone, S. Siri
In this paper we deal with the operational planning of transportation operations in an intermodal network. The objective is to satisfy a given transportation demand by using road vehicles and trains, in order to minimize the total transportation cost and meeting a set of operational constraints. We propose a linear integer programming model and an Ant Colony Optimization metaheuristic approach in a pure and a hybrid version. We present and compare the results obtained testing all the approaches on a benchmark set made of randomly generated problem instances. The tests show the appreciable behavior of the IP model, that however requires a considerable amount of time, and the ability of the hybrid ACO to generate high quality solutions for all the benchmark instances with a quite reduced computational effort.
本文研究了多式联运网络中运输作业的作业规划问题。目标是通过使用公路车辆和火车来满足给定的运输需求,以尽量减少总运输成本并满足一系列操作限制。我们提出了一个线性整数规划模型和一个纯和混合版本的蚁群优化元启发式方法。我们给出并比较了在随机生成的问题实例组成的基准集上测试所有方法所获得的结果。测试显示了IP模型的可观行为,然而这需要相当多的时间,并且混合蚁群算法能够以相当少的计算工作量为所有基准实例生成高质量的解决方案。
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引用次数: 6
Development of robotic laboratory automation platform with intelligent mobile agents for clinical chemistry 具有智能移动代理的临床化学机器人实验室自动化平台的开发
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042468
Byungjune Choi, W. You, S. Shin, H. Moon, J. Koo, W. Chung, Hyoukryeol Choi
In this research, we propose an innovative robotic platform for clinical tests suitable for small or medium sized laboratories using small-sized multiple mobile robots and a robotic arm. The proposed robotic platform is referred to as “BioRobot platform”. The BioRobot platform not only provides flexibility in test process by carrying out various clinical tests simultaneously through multiple mobile agents, but also increases productivity by having controllable throughput according to amount of tests. Therefore, the various algorithms which are related to robotic technologies have been applied in this platform to operate the entire hardware and several mobile agents simultaneously. To evaluate the performance of the BioRobot platform, various control methods are implemented, which provides parallel processing and scalability. The feasibility of the BioRobot platform with three mobile robotic agents is validated through preliminary experiments.
在本研究中,我们提出了一种创新的机器人平台,适用于中小型实验室的临床试验,使用小型多移动机器人和机械臂。提出的机器人平台被称为“BioRobot平台”。BioRobot平台不仅可以通过多个移动代理同时进行各种临床测试,从而在测试过程中提供灵活性,还可以根据测试数量控制吞吐量,从而提高生产率。因此,在该平台中应用了与机器人技术相关的各种算法,以同时操作整个硬件和多个移动代理。为了评估BioRobot平台的性能,实现了多种控制方法,提供了并行处理和可扩展性。通过初步实验验证了三种移动机器人代理组成的BioRobot平台的可行性。
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引用次数: 7
Integrating human swarm interaction in a distributed robotic control system 在分布式机器人控制系统中集成人群交互
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042493
C. Vasile, A. Pavel, C. Buiu
A multi-agent control architecture for swarm robotics applications which includes an innovative human-swarm interface is proposed. The architecture is designed to allow an operator to monitor and guide a robotic swarm to accomplish its missions. The system is composed of three types of agents, a graphical user interface agent, and a pair of a local and a social agent for each robot in the swarm. The local agent implements low level robot-specific functionalities like movement, obstacle avoidance and localization. The control algorithm is implemented in the social agent and is based on an adapted distributed version of the Particle Swarm Optimization technique. An original method, Gravity Points Method, for representing goals which are used by the human-swarm interface is also proposed. Experimental results using simulated e-puck robots are presented and directions for further developments are given.
提出了一种适用于群体机器人应用的多智能体控制体系结构,其中包括一种创新的人群界面。该架构旨在允许操作员监控和引导机器人群完成其任务。该系统由三种类型的代理组成,一个图形用户界面代理,以及一对本地和社会代理,用于群体中的每个机器人。本地代理实现低级机器人特定的功能,如移动、避障和定位。控制算法在社会代理中实现,并基于粒子群优化技术的一种适应的分布式版本。在此基础上,提出了一种新颖的人群界面目标表示方法——重力点法。给出了模拟电子冰球机器人的实验结果,并给出了进一步发展的方向。
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引用次数: 32
Virtual battery: A simulation framework for batteries in electric vehicles 虚拟电池:电动汽车电池的仿真框架
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042463
Feng Ju, Junwen Wang, Jingshan Li, S. Biller, G. Xiao
In this paper, a virtual battery model, which provides a framework for simulation of batteries in electric vehicles, is introduced. Using such a framework, we can model the performance of a battery during its usage, such as battery charge, discharge, and idle status, the impacts of internal and external temperature, manufacturing quality on joints, the cell capacity and balance management, etc. Such a framework enables providing quantitative tools for design and production engineers to predict the battery performance and provide feedback to battery design, control and manufacturing processes.
本文介绍了一种虚拟电池模型,为电动汽车电池的仿真提供了一个框架。利用该框架,我们可以对电池在使用过程中的性能进行建模,例如电池的充放电和闲置状态、内外温度的影响、制造质量对接头的影响、电池容量和平衡管理等。这样的框架可以为设计和生产工程师提供定量工具来预测电池性能,并为电池设计、控制和制造过程提供反馈。
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引用次数: 1
Simulation based evaluation and optimization for energy consumption of a typical welding shop 基于仿真的典型焊接车间能耗评估与优化
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042482
Hao Liu, Qianchuan Zhao, Weihua Cao, N. Huang, Xiang Zhao
Manufacturing facility's energy consumption depends on series of factors such as machines and equipment used for production, manufacturing procedures, building design, outside weather conditions and indoor environmental requirements, where many of them are stochastic in nature, thus makes energy consumption optimization of manufacturing facility a very difficult and challenging problem. It is almost impossible to solve the problem via an analytical study, while experimental studies usually are very costly and time consuming. To overcome these difficulties, this paper proposes a simulation based approach to evaluate and optimize the energy consumption of a manufacturing facility, and we use a typical welding shop as an example. To achieve long term low energy consumption, we face a two-level optimization problem: the building design and daily production scheduling. In the proposed approach, we use EnergyPlus for integrated energy usage estimation and we apply Ordinal Optimization (OO) method and Genetic Algorithms (GA) for optimization of building design and production scheduling, respectively. Numerical examples and results are provided. The optimization concept and the modeling framework could be used for manufacturing facility design and production scheduling to minimize the total energy consumption while maintaining production throughput.
制造设施的能耗取决于生产所用的机器设备、制造工艺、建筑设计、室外天气条件、室内环境要求等一系列因素,其中许多因素具有随机性,因此制造设施的能耗优化是一个非常困难和具有挑战性的问题。通过分析研究几乎不可能解决问题,而实验研究通常是非常昂贵和耗时的。为了克服这些困难,本文提出了一种基于仿真的方法来评估和优化制造设备的能耗,并以典型的焊接车间为例。为了实现长期的低能耗,我们面临着两个层面的优化问题:建筑设计和日常生产调度。在该方法中,我们使用EnergyPlus进行综合能源使用估算,并分别使用有序优化(OO)方法和遗传算法(GA)进行建筑设计和生产调度的优化。给出了数值算例和计算结果。该优化概念和建模框架可用于制造设施设计和生产调度,以在保持生产吞吐量的同时最小化总能耗。
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引用次数: 8
Designing maximally permissive deadlock avoidance policies for sequential resource allocation systems through classification theory 利用分类理论设计顺序资源分配系统的最大允许死锁避免策略
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042400
Ahmed Nazeem, S. Reveliotis
Most of the past research on the problem of deadlock avoidance for sequential resource allocation systems (RAS) has acknowledged the fact that the maximally permissive deadlock avoidance policy (DAP) possesses super-polynomial complexity for most RAS classes, and it has resorted to solutions that trade off maximal permissiveness for computational tractability. In this work, we seek the effective implementation of the maximally permissive DAP for sequential RAS, by distinguishing between the off-line and the on-line computation required for the specification of this policy, and developing a representation of the derived result that will require minimal on-line computation. The particular representation that we adopt is that of a compact classifier that will effect the underlying dichotomy of the reachable state space into safe and unsafe subspaces. The reported results establish that the proposed method can support the effective deployment of maximally permissive DAP for RAS with very large state spaces.
过去关于顺序资源分配系统(RAS)的死锁避免问题的大多数研究都承认,对于大多数RAS类来说,最大允许的死锁避免策略(DAP)具有超多项式复杂度,并且它采用了在最大允许性与计算可跟踪性之间进行权衡的解决方案。在这项工作中,我们通过区分该策略规范所需的离线和在线计算,并开发需要最小在线计算的派生结果的表示,寻求对顺序RAS的最大许可DAP的有效实现。我们采用的特殊表示是一个紧凑的分类器,它将影响可达状态空间的基本二分法分为安全和不安全的子空间。结果表明,该方法可以支持具有非常大状态空间的RAS的最大允许DAP的有效部署。
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引用次数: 31
Solving scheduling problems in distribution centers using symmetry breaking constraints 利用对称破缺约束求解配送中心调度问题
Pub Date : 2011-10-13 DOI: 10.1109/CASE.2011.6042498
M. P. Fanti, G. Stecco, W. Ukovich
This paper deals with the problem of scheduling the internal operations in Distribution Centers (DC). Internal operations of the DC consist essentially in de-consolidating inbound cases, sorting products according to customer requests and consolidating outbound cases. The objective is to minimize the total operation time determining the optimal sequence of the internal operations.
本文研究了配送中心内部作业的调度问题。DC的内部操作主要包括对入站案例进行拆包、根据客户要求对产品进行分类以及对出站案例进行整合。目标是最小化总操作时间,确定内部操作的最佳顺序。
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引用次数: 0
期刊
2011 IEEE International Conference on Automation Science and Engineering
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