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2015 23rd Mediterranean Conference on Control and Automation (MED)最新文献

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Design, modeling and control of a 5-DoF light-weight robot arm for aerial manipulation 一种用于空中操作的五自由度轻型机械臂的设计、建模和控制
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158852
Dario Bellicoso, L. Buonocore, V. Lippiello, B. Siciliano
The design, modeling and control of a 5 degrees-of-freedom light-weight robot manipulator is presented in this paper. The proposed robot arm, named Prisma Ultra-Lightweight 5 ARm (PUL5AR), is employed to execute manipulation tasks equipped on board of a vertical take-off and landing unmanned aerial vehicle. The arm is compact and light-weight. Its mechanics is designed such that it can fold on itself during landing manoeuvres. Moreover, the design is conceived to constrain the center of gravity of the arm as close as possible to vehicle base, thus reducing the total inertia and static unbalancing of the system. Experimental tests have been carried out in order to validate the dynamic model, the communication library, the developed electronics, and the control schemes implemented for the designed robot arm.
介绍了一种5自由度轻型机械臂的设计、建模和控制。该机器人手臂名为Prisma Ultra-Lightweight 5 arm (PUL5AR),用于执行安装在垂直起降无人机上的操作任务。该臂结构紧凑,重量轻。它的机械结构是这样设计的,它可以在着陆时折叠起来。此外,该设计旨在约束臂的重心尽可能接近车辆底座,从而减少系统的总惯性和静态不平衡。为了验证所设计的机械臂的动态模型、通信库、开发的电子设备和控制方案,进行了实验测试。
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引用次数: 97
Throughput optimality of extended back-pressure traffic signal control algorithm 扩展背压交通信号控制算法的吞吐量最优性
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158897
Nan Xiao, Emilio Frazzoli, Yiwen Luo, Yitong Li, Yu Wang, Danwei W. Wang
The back-pressure/max-pressure traffic signal control algorithm proposed in the existing literature is distributed, maximizes network throughput, and can be implemented without knowing traffic arrival rates. In this paper, we present an extended back-pressure traffic signal control algorithm, which can further handle bounded measurement/estimation noises in queue lengths and incorporate online estimation of turning ratios and saturated flow rates. Therefore, the extended back-pressure algorithm forms an important step towards the real application of distributed traffic signal control. We prove that under certain conditions, the extended back-pressure algorithm still achieves maximum throughput, i.e, the expected long-term average of total queues is bounded from above under the extended back-pressure algorithm for largest possible set of arrival vectors.
现有文献中提出的背压/最大压力交通信号控制算法是分布式的,能够最大化网络吞吐量,并且可以在不知道交通到达率的情况下实现。本文提出了一种扩展的背压交通信号控制算法,该算法可以进一步处理队列长度中的有界测量/估计噪声,并结合了转弯比和饱和流量的在线估计。因此,扩展背压算法是实现分布式交通信号控制真正应用的重要一步。我们证明了在一定条件下,扩展背压算法仍然可以获得最大吞吐量,即对于最大可能到达向量集,扩展背压算法下总队列的期望长期平均值是由上有界的。
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引用次数: 15
Fast 3D object matching with Projection Density Energy 快速3D对象匹配与投影密度能量
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158836
O. Kechagias-Stamatis, N. Aouf
We present a novel real time 3D Automatic Target Recognition algorithm appropriate for LIDAR based time critical applications. Its main contribution is the Constant False Alarm Rate adaptive threshold combined with the Projection Density Energy and the transformation of the 3D problem into multiple 2Ds. Our approach is invariant to 3D rotations combined with scale change, Gaussian noise and uniform sparse representation of the target. Applied on real targets from the UWA dataset and on military targets from the Princeton shape benchmark, we obtained 90% recognition in 77ms and 97% in 106ms respectively (in Matlab). Our approach could be considered by the Defence Community as an initial step towards LIDAR based missile seekers where data is inversely proportional to the available time to perform recognition.
我们提出了一种新的实时三维自动目标识别算法,适用于基于激光雷达的时间关键应用。它的主要贡献是结合投影密度能量和将三维问题转化为多个二维问题的恒定虚警率自适应阈值。该方法结合尺度变化、高斯噪声和目标均匀稀疏表示,对三维旋转具有不变性。应用于UWA数据集的真实目标和普林斯顿形状基准的军事目标,我们分别在77ms和106ms内获得了90%和97%的识别率(Matlab)。我们的方法可以被防务界视为迈向基于激光雷达的导弹导引头的第一步,其中数据与执行识别的可用时间成反比。
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引用次数: 5
A packet address driven test strategy for stuck-at faults in networks-on-chip interconnects 片上网络互连中卡在故障的包地址驱动测试策略
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158747
B. Bhowmik, S. Biswas, J. Deka
With the rapid advancements of deep submicron and nano technologies the dimension of a chip is ever shrinking. With continuous shrinking of chip dimensions, immense interconnects are associated on a die to satisfy high bandwidth requirements and make a network-on-chip (NoC) architecture prone to large number of interconnect faults. Therefore the reliability becomes a crucial issue for the communicating parties in a NoC communication fabric. This paper presents a packet address driven test strategy that diagnoses NoC interconnects experiencing stuck-at (stuck-at-0 and stuck-at-1) faults. The proposed strategy is scalable to all sizes and types of mesh NoCs and can be extended to other NoCs. The simulation is done on a number of mesh NoCs to establish the scalability. The simulation results show the performance measured in terms of test and fault coverages that can reach to 100% at the expense of few CPU clocks.
随着深亚微米和纳米技术的快速发展,芯片的尺寸不断缩小。随着芯片尺寸的不断缩小,为了满足高带宽的要求,芯片上需要大量的互连,这使得片上网络(NoC)架构容易出现大量的互连故障。因此,可靠性成为NoC通信结构中通信各方的关键问题。本文提出了一种包地址驱动的测试策略,用于诊断出现卡在(卡在0和卡在1)故障的NoC互连。所提出的策略可扩展到所有规模和类型的网状noc,并可扩展到其他noc。在多个网格noc上进行了仿真,以验证其可扩展性。仿真结果表明,以测试和故障覆盖率为衡量标准的性能可以达到100%,而CPU时钟却很少。
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引用次数: 22
Solar membrane distillation: A control perspective 太阳膜蒸馏:控制视角
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158843
J. D. Gil, A. Ruiz-Aguirre, L. Roca, G. Zaragoza, M. Berenguel
This paper presents a preliminary architecture for controlling solar membrane distillation facilities. Membrane distillation (MD) is a desalination technology under investigation, without industrial applications and with only few pilot systems. There is a general lack of information on how these systems perform during real solar-powered operation and how distillate quality deteriorates under intermittent conditions. One of the few systems that have been fully described in literature is the MD-solar pilot plant in Plataforma Solar de Almería (PSA), Spain. This paper presents a first step towards an optimal automatic operation of this system through the definition of operation modes and basic control loops. A discussion of control schemes to be implemented in the near future is also included in this work.
本文提出了一种控制太阳膜蒸馏装置的初步体系结构。膜蒸馏(MD)是一种正在研究的脱盐技术,没有工业应用,只有少数试点系统。关于这些系统在真正的太阳能运行过程中如何运行以及间歇条件下蒸馏液质量如何恶化的信息普遍缺乏。文献中充分描述的少数系统之一是西班牙Plataforma Solar de Almería (PSA)的MD-solar试点工厂。本文通过对运行模式和基本控制回路的定义,为实现该系统的最佳自动运行迈出了第一步。本文还讨论了在不久的将来将实施的控制方案。
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引用次数: 3
State estimator synthesis for position dependent flexible systems with position independent error convergence 具有位置无关误差收敛的位置依赖柔性系统的状态估计综合
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158898
K. W. Verkerk, Yanin Kasemsinsup, H. Butler, S. Weiland
In this paper a state estimator for high tech flexible systems with an inherent nonlinearity in the output dynamics is proposed. We consider an application in which sensor measurements of the flexible system become parameter (position) dependent. An LPV setting is proposed for the design of estimators that estimate flexible modes of the system. The possibility of pole placement for the error dynamics is investigated and characterized. In particular, necessary and sufficient conditions are derived for the estimator convergence to be parameter independent. In addition, an eigenvalue-shifting technique that improves the convergence of the estimated flexible modes is presented. Simulation results on a basic example and a full flexible system model are used to demonstrate the merits of the proposed estimation algorithms.
本文提出了一种具有输出动力学固有非线性的高技术柔性系统的状态估计器。我们考虑一个应用,其中传感器测量的柔性系统成为参数(位置)依赖。提出了一种LPV设置,用于估计系统的柔性模态。研究了误差动力学中极点放置的可能性,并对其进行了表征。特别地,导出了估计量收敛是参数无关的充分必要条件。此外,提出了一种特征值移位技术,提高了估计柔性模态的收敛性。通过一个基本实例和一个全柔性系统模型的仿真结果,验证了所提估计算法的优越性。
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引用次数: 1
State of charge estimation based on extened Kalman filter algorithm for Lithium-Ion battery 基于扩展卡尔曼滤波算法的锂离子电池充电状态估计
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158833
E. Kamal, A. Hajjaji, A. M. Mabwe
Estimation of the state of charge (SOC) is a critical parameter for the control of propulsion systems in plug-in hybrid electric vehicles (PHEV) and the electric vehicles (EVs). This paper proposes the SOC estimator of a Lithium-Ion battery using the adaptive extended Kalman filter (EKF). This method uses an optimization algorithm to update the EKF model parameters during a charge period. Accurate knowledge of the nonlinear relationship between the open circuit voltage (OCV) and the SOC is required for adaptive SOC tracking during battery usage. EKF is employed to estimate the SOC by considering it as one of the states of the battery system. The dynamic model structure adopted is based on an equivalent circuit model whose parameters are scheduled on the SOC, temperature, and current direction. The validity of the procedure is demonstrated experimentally for an A123 systems' APR18650m1 LiFePO4 battery.
充电状态(SOC)的估计是插电式混合动力汽车(PHEV)和纯电动汽车(ev)推进系统控制的关键参数。提出了一种基于自适应扩展卡尔曼滤波(EKF)的锂离子电池荷电状态估计方法。该方法采用优化算法在充电周期内更新EKF模型参数。准确了解开路电压(OCV)与SOC之间的非线性关系是电池使用过程中自适应SOC跟踪的必要条件。将荷电状态作为电池系统的一种状态来估计荷电状态。采用的动态模型结构基于等效电路模型,其参数按SOC、温度和电流方向调度。通过A123系统的APR18650m1 LiFePO4电池的实验验证了该方法的有效性。
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引用次数: 8
Effects of permanent bounded cyber-attacks on networked control systems 永久有界网络攻击对网络化控制系统的影响
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158856
B. Gerard, H. Voos, Yumei Li, M. Darouach
In this paper, the problem of permanent bounded cyber-attacks on networked control systems is treated. After a characterisation of malicious cyber attacks, the danger of permanent bounded cyber-attacks of two types is proved, the step attacks on system with invariant zero with zero real part and the free attacks. Simulation examples demonstrate the obtained results.
本文研究了网络控制系统的永久有界网络攻击问题。在描述了恶意网络攻击的特征之后,证明了两种类型的永久有界网络攻击的危险性,即对实部为零的不变量零系统的阶跃攻击和自由攻击。仿真实例验证了所得结果。
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引用次数: 3
Disturbance attenuation problem for overactuated systems with actuator saturation: A control allocation based approach 具有执行器饱和的过驱动系统的扰动衰减问题:一种基于控制分配的方法
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158814
A. K. Naskar, S. Patra, S. Sen
In this paper, a two-stage control allocation based covariance controller design method is proposed to ensure a certain level of disturbance attenuation property for a class of overactuated systems. The proposed method is equally efficient as existing single-stage design technique for assigning a state or output covariance matrix. A set of sufficient conditions has been derived for which the actuator displacements in single-stage technique and in the proposed allocation based method become same. The design steps are formulated in the linear matrix inequality framework. In the presence of actuator saturation, the allocation based method yields better closed-loop performance compared to the single-stage design technique until the level of actuator saturation remains under the attainable range of the allocator. To elucidate the effectiveness of the proposed method, two flight control design examples have been presented.
为了保证一类过驱动系统具有一定程度的扰动衰减特性,提出了一种基于两阶段控制分配的协方差控制器设计方法。对于分配状态或输出协方差矩阵,该方法与现有的单阶段设计技术同样有效。推导了单级法和基于分配法的执行器位移相等的充分条件。设计步骤是在线性矩阵不等式框架下制定的。在执行器饱和的情况下,与单级设计技术相比,基于分配的方法具有更好的闭环性能,直到执行器饱和水平保持在分配器可达到的范围内。为了说明所提方法的有效性,给出了两个飞行控制设计实例。
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引用次数: 0
Profiled QoE based network controller 基于QoE的网络控制器
Pub Date : 2015-06-16 DOI: 10.1109/MED.2015.7158901
S. Canale, Federico Cimorelli, F. Facchinei, Raffaele Gambuti, L. Palagi, V. Suraci
Internet evolution follows the customer needs, each algorithm, protocol, architecture, equipment, functionality succeeded when the users perceived a real benefit in using it. Taking into account the impact of customer experience when designing promising and future proof technologies is essential. In this paper we investigate how it is possible to control network resources on the base of the Quality of Experience (QoE), defined as the quality of service perceived by a user when using a specific service. QoE is a subjective measure and typically differs from objective and structured measures of quality of service that are under the service provider's control. We consider the problem of identifying a set of QoE profiles that describes the user behavior when enjoying specific class of services, by analyzing the data related to the users' feedback in different contextual scenarios. We formulated the mathematical model and performed a validation on the base of preliminary field trials.
互联网的发展遵循客户的需求,每一个算法,协议,架构,设备,功能成功,当用户意识到使用它的真正好处。在设计有前途的和面向未来的技术时,考虑到客户体验的影响是至关重要的。在本文中,我们研究了如何在体验质量(QoE)的基础上控制网络资源,体验质量被定义为用户在使用特定服务时感知到的服务质量。QoE是一种主观度量,通常不同于服务提供者控制下的服务质量的客观和结构化度量。通过分析不同上下文场景中与用户反馈相关的数据,我们考虑了识别一组描述用户在享受特定服务类别时行为的QoE配置文件的问题。建立了数学模型,并在初步田间试验的基础上进行了验证。
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引用次数: 6
期刊
2015 23rd Mediterranean Conference on Control and Automation (MED)
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