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2017 13th IEEE Conference on Automation Science and Engineering (CASE)最新文献

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A study on performance evaluation and status-based decision for cyber-physical production systems 信息物理生产系统的性能评价与状态决策研究
Pub Date : 2017-08-23 DOI: 10.1109/COASE.2017.8256233
Feifan Wang, Feng Ju, Yan Lu
In concert with advances in information and communication technology and their application to manufacturing environments, physical entities in factories are acquiring more intelligence via integration with cyber systems. This integration brings about Cyber-Physical Production Systems and leads to smart manufacturing, the next generation manufacturing paradigm. In the new paradigm, high levels of agility, flexibility, and real-time control make it possible to keep the system running efficiently and self-organized. At the same time, however, it becomes difficult in a self-organized and decentralized system to capture the system's status, evaluate the system's performance, and predict the system's future events. In this article, we suggest improvements to smart manufacturing systems where the intelligence from smart entities could be fully utilized without losing system control. To achieve this goal, a solution for integrating schedule-driven production (push systems) and event-driven production (pull systems) is proposed to optimize both material flow and information flow for manufacturing operations. For each entity in a smart manufacturing system, details of decision making are encapsulated and its status is exposed. The status-based decisions filter out unimportant information and make smart manufacturing systems loosely-coupled and predictable. A simulation case study based on Devices Profile for Web Services [1] is used to illustrate the effectiveness of such an approach. The case study suggests that status-based decisions could be applied to smart manufacturing and that they can be part of an approach that balances the self-organized control with overall performance. Therefore, we can make full use of intelligent entities in lower levels of a factory while keeping the entire system under control.
随着信息和通信技术的进步及其在制造环境中的应用,工厂中的物理实体正在通过与网络系统的集成获得更多的智能。这种集成带来了信息物理生产系统,并导致智能制造,下一代制造范式。在新的范例中,高水平的敏捷性、灵活性和实时控制使得保持系统高效运行和自组织成为可能。然而,与此同时,在一个自组织和分散的系统中,捕捉系统的状态、评估系统的性能和预测系统的未来事件变得很困难。在本文中,我们建议对智能制造系统进行改进,使智能实体的智能可以在不失去系统控制的情况下得到充分利用。为了实现这一目标,提出了一种集成进度驱动生产(推动系统)和事件驱动生产(拉动系统)的解决方案,以优化制造操作的物料流和信息流。对于智能制造系统中的每个实体,将其决策细节进行封装并暴露其状态。基于状态的决策过滤掉了不重要的信息,使智能制造系统松散耦合且可预测。一个基于Web服务[1]的设备配置文件的模拟案例研究被用来说明这种方法的有效性。案例研究表明,基于状态的决策可以应用于智能制造,并且它们可以成为平衡自组织控制与整体性能的方法的一部分。因此,我们可以在控制整个系统的同时,充分利用工厂低层的智能实体。
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引用次数: 4
Optimization of deterministic timed weighted marked graphs 确定性定时加权标记图的优化
Pub Date : 2017-08-20 DOI: 10.1109/COASE.2017.8256226
Zhou He, Zhiwu Li, A. Giua
This paper is motivated by the optimization of manufacturing systems such as assembly lines and job-shops. Therefore, the main problem for designers is to find a trade-off between minimizing the cost of the resources and maximizing the system's throughput. Timed marked graphs, a special class of Petri nets, are extensively used to model and analyze cyclic manufacturing systems. Weighted marked graphs are convenient to model systems with bulk services and arrivals. We consider two problems of practical importance for this class of nets. The marking optimization problem consists in finding an initial marking to minimize the weighted sum of tokens in places while the average cycle time is less than or equal to a given value. The cycle time optimization problem consists in finding an initial marking to minimize the average cycle time while the weighted sum of tokens in places is less than or equal to a given value. We propose two heuristic algorithms to solve these problems. Several simulation studies show that the effectiveness of the proposed approach is significantly faster than existing ones.
本文的研究灵感来源于装配线和作业车间等制造系统的优化问题。因此,设计人员的主要问题是在最小化资源成本和最大化系统吞吐量之间找到一个权衡。时间标记图是一类特殊的Petri网,广泛用于循环制造系统的建模和分析。加权标记图便于对具有大量服务和到达的系统进行建模。我们考虑这类网的两个实际重要问题。标记优化问题包括在平均循环时间小于或等于给定值的情况下,找到一个初始标记以最小化位置上标记的加权和。循环时间优化问题包括找到一个初始标记,以最小化平均循环时间,而位置上标记的加权总和小于或等于给定值。我们提出了两种启发式算法来解决这些问题。一些仿真研究表明,该方法的有效性明显快于现有方法。
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引用次数: 6
A circuit-breaker use-case operated by a humanoid in aircraft manufacturing 飞机制造中由人形机器人操作的断路器用例
Pub Date : 2017-08-20 DOI: 10.1109/COASE.2017.8256069
Anastasia Bolotnikova, Kevin Chappellet, Antonio Paolillo, Adrien Escande, G. Anbarjafari, Adolfo Suarez-Roos, P. Rabaté, A. Kheddar
Automation of large-scale aircraft manufacturing with wheeled or embedded platforms requires costly changes of the manufacturing process and the environment. Humanoid robots could address this issue. We present a use-case of HRP-4 humanoid operating circuit-breakers. We show the feasibility of using visual feedback and force control in an integrated and unified multi-contact and multimodal task space quadratic programming (QP) whole-body control framework to enable HRP-4 to perform the task. We discuss the experimental results and outline the limitations of the current platform design and control implementation.
采用轮式或嵌入式平台的大型飞机制造自动化需要对制造过程和环境进行昂贵的改变。人形机器人可以解决这个问题。我们提出了一个HRP-4类人操作断路器的用例。我们展示了在集成和统一的多接触和多模态任务空间二次规划(QP)全身控制框架中使用视觉反馈和力控制的可行性,使HRP-4能够执行任务。我们讨论了实验结果,并概述了当前平台设计和控制实现的局限性。
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引用次数: 18
Stochastic simulation of clinical pathways from raw health databases 从原始健康数据库中随机模拟临床路径
Pub Date : 2017-08-20 DOI: 10.1109/COASE.2017.8256167
M. Prodel, V. Augusto, Xiaolan Xie, B. Jouaneton, L. Lamarsalle
This paper presents a method to automatically create stochastic simulation models of clinical pathways from raw databases. We introduce an automatic procedure to convert a process model, discovered with process mining, into an actionable simulation model. The concept of state charts is used and enriched to incorporate the distinctive features of healthcare processes into the model. The clinical pathway model is used to simulate new patients' sequence of events. The resulting model is validated by comparing key performances indicators with historical data. Finally, we use the model to perform an automatically setup sensitivity analysis. The whole process is automated and can be used with any input data.
本文提出了一种从原始数据库中自动生成临床路径随机模拟模型的方法。我们引入了一个自动过程,将通过过程挖掘发现的过程模型转换为可操作的仿真模型。使用并丰富了状态图的概念,以便将医疗保健流程的独特特征合并到模型中。临床路径模型用于模拟新患者的事件序列。通过将关键绩效指标与历史数据进行比较,验证了所得到的模型。最后,利用该模型进行了自动设置灵敏度分析。整个过程是自动化的,可用于任何输入数据。
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引用次数: 5
An optimization-simulation approach for long term care structure assignment problem for elderly people 老年人长期护理结构分配问题的优化模拟方法
Pub Date : 2017-08-20 DOI: 10.1109/COASE.2017.8256166
T. Franck, V. Augusto, Xiaolan Xie, R. Gonthier
The growing number of elderly people is one of the most important problems for the next years. This part of the population is often dependent and does not tolerate environment changes so that long term care structure assignment should be well prepared. This paper proposes a new optimization-simulation approach to (i) solve the long term care structure assignment problem for a population of elderly people and (ii) validate and calibrate the model depending on stakeholders objectives and territory special features. A Mixed-Integer Linear Program is proposed to solve the tactical assignment problem, while a stochastic simulation is used to assess the key performance indicators relevant for elderly on the long term.
老年人数量的增加是未来几年最重要的问题之一。这部分人口通常是依赖的,不能忍受环境变化,因此长期护理结构分配应做好充分准备。本文提出了一种新的优化模拟方法来(i)解决老年人群体的长期护理结构分配问题,(ii)根据利益相关者的目标和地域特征验证和校准模型。提出了一种混合整数线性规划来解决战术分配问题,同时采用随机模拟来评估与老年人长期相关的关键绩效指标。
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引用次数: 2
The convergence analysis of bat-inspired consensus protocols with nonlinear dynamics 具有非线性动力学的蝙蝠启发共识协议的收敛性分析
Pub Date : 2017-08-01 DOI: 10.1109/COASE.2017.8256325
Qishuai Liu, Qing Hui
This paper proposes a new class of cooperative bat-inspired consensus protocols including a collection of nonlinear dynamics for multi-agent coordination. The proposed consensus protocols embed a suggested convergence direction which can improve the performance of convergence time. This suggested convergence direction can be used to design a distributed algorithm for controlling multi-agent systems while simultaneously solving a large-scale optimization problem. By virtue of a Lyapunov-based method, we show that the proposed bat-inspired consensus protocols can reach the global consensus asymptotically. Meanwhile, the bat-inspired consensus protocols subjected to external disturbance are also considered. We give the theoretical proof of a sufficient condition for guaranteeing the convergence of the extended consensus protocols with disturbances.
本文提出了一类新的基于蝙蝠的协作共识协议,该协议包含了多智能体协调的非线性动力学集合。所提出的共识协议嵌入了一个建议的收敛方向,可以提高收敛时间的性能。这一收敛方向可用于设计一种分布式算法来控制多智能体系统,同时解决大规模优化问题。通过基于lyapunov的方法,我们证明了所提出的蝙蝠启发的共识协议可以渐近地达到全局共识。同时,还考虑了外部干扰下蝙蝠启发的共识协议。从理论上证明了具有扰动的扩展共识协议收敛性的一个充分条件。
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引用次数: 4
Target tracking over distributed sensor networks by polar measurements with time-varying bias 时变偏差极坐标测量在分布式传感器网络上的目标跟踪
Pub Date : 2017-08-01 DOI: 10.1109/COASE.2017.8256142
Cui Zhang, Y. Jia
This note concerns about the problem of target tracking over distributed sensors which measure range and azimuth with time-varying bias. First, the pseudo-measurements are generated to transform the biased nonlinear measurements into Cartesian coordinates. Then a modified two-stage filter is proposed to decouple the estimation of target state and sensor bias. Moreover, a distributed fusion algorithm for sensor network is derived based on local estimates. The effectiveness of the proposed filters are demonstrated by the Monte Carlo simulation results.
本文关注的是分布式传感器上的目标跟踪问题,这些传感器测量的距离和方位角具有时变偏差。首先,生成伪测量值,将有偏差的非线性测量值转换为笛卡尔坐标。然后提出了一种改进的两级滤波器来解耦目标状态估计和传感器偏差。在此基础上,提出了一种基于局部估计的传感器网络分布式融合算法。蒙特卡罗仿真结果验证了所提滤波器的有效性。
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引用次数: 0
Fuzzy decision of machine switch on-off for energy efficient operation of manufacturing system 面向制造系统节能运行的机床开关的模糊决策
Pub Date : 2017-08-01 DOI: 10.1109/COASE.2017.8256259
Junfeng Wang, J. Xue, Eliana Torres Duque, Shiqi Li, Q. Chang
In a manufacturing system, the machines have many idle statuses which consumed large quantity energy but with non-value added activities. Real time idle status control is important and challenging for the energy efficient manufacturing. With the sensible ability improved, more and more data can be collected from the manufacturing system. A fuzzy decision method is proposed to decrease the idle status by switching on-off the machine based on the real time data of the system. The serial manufacturing system is decomposed to basic control modules. A fuzzy controller with a fuzzy logic model and an on-off decision model is design based on the real time data of buffers and machines in order to switch the machine status. The fuzzy rules are described by analyzing the decision intention according to the human knowledge. After a series of simulation experiments, it has been observed that the proposed approach can be a simple, practical way to energy saving operation with accepted throughput loss.
在一个制造系统中,机器有许多闲置状态,这些状态消耗大量的能量,但没有增加价值的活动。实时空闲状态控制是高效节能制造的一个重要问题,也是一个具有挑战性的问题。随着感知能力的提高,可以从制造系统中收集到越来越多的数据。提出了一种基于系统实时数据的模糊决策方法,通过开关机来减少闲置状态。将串行制造系统分解为几个基本控制模块。基于缓冲器和机器的实时数据,设计了具有模糊逻辑模型和开关决策模型的模糊控制器,实现了机器状态的切换。根据人类的知识,通过对决策意图的分析来描述模糊规则。经过一系列的仿真实验表明,该方法是一种简单、实用的节能操作方法,并且可以接受吞吐量损失。
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引用次数: 9
Task scheduling based on virtual machine matching in clouds 云环境下基于虚拟机匹配的任务调度
Pub Date : 2017-08-01 DOI: 10.1109/COASE.2017.8256171
Peiyun Zhang, Mengchu Zhou
This work proposes a task scheduling method based on virtual machine (VM) matching in clouds. Its objectives are 1) to maximize task scheduling performance and 2) to minimize non-reasonable task allocation, e.g., a simple task to a high-performance VM and thus causing resource waste. A job classifier is utilized to classify tasks and match to a most suitable VM. This work uses the historical data to pre-create VMs of different types. This can save time of creating VMs during task scheduling. Tasks are efficiently matched with concrete VMs dynamically. Task scheduling is accordingly conducted. Experimental results with the Google Cluster Trace dataset show that the proposed method can effectively improve the cloud's task scheduling performance and achieve desired load balancing among various virtual machines in comparison with some existing methods.
本文提出了一种基于云环境下虚拟机匹配的任务调度方法。它的目标是:1)最大限度地提高任务调度性能;2)最大限度地减少不合理的任务分配,例如将简单的任务分配给高性能的虚拟机,从而造成资源浪费。作业分类器用于对任务进行分类并匹配到最合适的VM。使用历史数据预创建不同类型的虚拟机。这样可以节省任务调度时创建虚拟机的时间。任务与具体的虚拟机动态高效匹配。据此进行任务调度。基于Google Cluster Trace数据集的实验结果表明,与现有的一些方法相比,该方法可以有效地提高云的任务调度性能,并在各种虚拟机之间实现理想的负载均衡。
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引用次数: 2
Regulation by competing: A hidden layer of gene regulatory networks 竞争调控:基因调控网络的隐藏层
Pub Date : 2017-08-01 DOI: 10.1109/COASE.2017.8256084
Xiaowo Wang
Quantitative understanding of biological regulation is essential for studying natural biosystems and for constructing synthetic systems. Current studies on gene regulation are used to build models under the assumption that gene regulators acting on a single or few targets. However, many regulators are actually shared between multiple target species with varying binding affinities, and target molecules often exist at different copy number. If the regulator is not in excess relative to target molecule pool, targets could cross talk with each other by competing for a limited pool of sharing regulators. Emerging examples suggest that such competing effects are wide spread in biosystems, including transcription factor binding, ribosome allocation, microRNA regulation, protein degradation, etc. We proposed a mathematical model to describe the common properties of these diverse competing regulatory systems, and implemented synthetic gene circuits to understand the quantitative behaviors of microRNA-target competing effects in human cell (1,2). Our work and several resent papers demonstrate that, molecular competing effects can couple the expression level of target molecules (3), introduce ultra-sensitivity to regulation dose-response curve (1,4), control temporal dynamics of gene expression (5), filter high frequency noises, and influence the stability of synthetic gene circuits (6). Systematic study of competitive regulation is essential for the precise control of synthetic biological systems.
定量理解生物调控对于研究自然生物系统和构建合成系统至关重要。目前对基因调控的研究都是在假设基因调控作用于单一或少数靶点的情况下建立模型。然而,许多调控因子实际上是在多个结合亲和力不同的靶物种之间共享的,靶分子往往以不同的拷贝数存在。如果调控因子相对于目标分子池没有过量,则目标分子可以通过竞争有限的共享调控因子池而相互串扰。新出现的例子表明,这种竞争效应在生物系统中广泛存在,包括转录因子结合、核糖体分配、microRNA调节、蛋白质降解等。我们提出了一个数学模型来描述这些不同竞争调控系统的共同特性,并实现了合成基因电路来了解人类细胞中microrna靶竞争效应的定量行为(1,2)。我们的工作和最近的几篇论文表明,分子竞争效应可以耦合靶分子的表达水平(3),引入调节剂量-响应曲线的超敏感性(1,4),控制基因表达的时间动态(5),过滤高频噪声,影响合成基因电路的稳定性(6)。系统研究竞争调控对合成生物系统的精确控制至关重要。
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引用次数: 0
期刊
2017 13th IEEE Conference on Automation Science and Engineering (CASE)
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