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2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)最新文献

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Analysis of QoS for the EDCA and HCCA mechanisms by simulation in a WLAN for voice, video, and data 通过在WLAN中模拟语音、视频和数据的EDCA和HCCA机制的QoS分析
Mario R. Camana, Hidalgo Pablo, García Carla
This paper's main objective is to analyze the quality of service using the network simulator NS2, in an infrastructure WLAN for voice, video, and data with IEEE 802.11g and IEEE 802.11e standards by access types DCF (Distributed Coordination Function), Enhanced Distributed Channel Access (EDCA) and Hybrid Coordination Function Controlled Channel Access (HCCA). For this purpose, comparative studies of the performance of DCF, EDCA and HCCA access methods are performed for each type of traffic, using metrics such as transmission rate, end-to-end delay and collision percentage.
本文的主要目标是使用网络模拟器NS2,在基于IEEE 802.11g和IEEE 802.11e标准的语音、视频和数据基础设施WLAN中,通过访问类型DCF(分布式协调功能)、增强型分布式通道访问(EDCA)和混合协调功能控制通道访问(HCCA)来分析服务质量。为此,使用传输速率、端到端延迟和碰撞百分比等指标,对每种流量类型的DCF、EDCA和HCCA接入方法的性能进行了比较研究。
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引用次数: 1
Software defined radio for hands-on communication theory 软件定义无线电的实践通信理论
Hector Miyashiro, M. Medrano, José Huarcaya, J. Lezama
Based on a workshop developed at INICTEL-UNI, this paper presents the methodology and considerations taken to improve the experiences in communication laboratory sessions in Peruvian universities with Software Defined Radio platforms, using a HackRF-One for transmission and a RTL-SDR for reception together with GNUradio Companion, an open source software. The use of these tools allows real communications to be implemented with low cost, simplicity and flexibility that represents a perfect combination for undergraduate laboratory sessions. In addition, it is also presented an 8-PSK communication system implementation as an experience to digital communications as a viability of this proposal.
本文以INICTEL-UNI举办的研讨会为基础,介绍了使用软件定义无线电平台改善秘鲁大学通信实验室会议体验的方法和考虑因素,使用HackRF-One进行传输,使用RTL-SDR进行接收,并使用开源软件GNUradio Companion。使用这些工具可以实现低成本、简单和灵活的真实通信,这是本科实验室课程的完美结合。此外,还提出了一个8-PSK通信系统的实现,作为数字通信的经验,作为本提案的可行性。
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引用次数: 11
Implementation of knowledge management in energy companies 能源企业知识管理的实施
R. Velásquez, Jennifer Vanessa Mejía Lara
The research challenges in the implementation of a methodology of knowledge management, which was executed by an innovative proposal, that takes the advances of the best universities and companies of the world. This paper challenges the status quo in the generation, dissemination, training and feedback of knowledge at the enterprise level. The case of study, presents a detailed description of implementation in Peru. The expert system has 3 components: i) Maturity model, ii) Systems and processes for transversal knowledge management and iii) Information and communication technology systems for easy consultation at all levels. The benefits are: i) To ensure knowledge (retention, diffusion, generation and integration) with the standards needed, ii) To optimize times response: it allows an internationally proven functional model in companies that depend on knowledge, iii) To Verify the information and availability of the tool, without changing the IT conditions.
该研究挑战了知识管理方法的实施,这是一个创新的建议,采取了世界上最好的大学和公司的进步。本文对企业层面知识的生成、传播、培训和反馈的现状提出了挑战。本研究案例详细介绍了秘鲁的实施情况。专家系统有3个组成部分:1)成熟度模型;2)横向知识管理的系统和流程;3)便于各级咨询的信息和通信技术系统。其好处是:i)确保知识(保留、传播、生成和集成)符合所需的标准,ii)优化时间响应:它允许在依赖知识的公司中使用国际公认的功能模型,iii)在不改变it条件的情况下验证工具的信息和可用性。
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引用次数: 23
Modeling a multipurpose water tank plant 一个多用途水箱工厂的建模
A. Rojas-Moreno, J. Hernandez-Garagatti
This work develops nonlinear and linear dynamic models of a multipurpose plant: a water tank fed by two flow rates (cold and hot water), which are mixed to produce an outflow rate. Such a plant is a MIMO (Multiple Input, Multiple Output) process with two inputs: cold and hot water flow rates, and two outputs: level and temperature of the water in the tank. This plant exhibits interaction between its inputs and outputs because the variation of one input affects the behavior of another output. Some experiments were performed to determine maximum values of the cold and hot flow rates, and to compute the discharge coefficient of the outflow rate. Applying the laws of physics and using the parameters obtanined experimentally, a MIMO nonlinear dynamic model of the plant was obtained. The corresponding state–space representation of the nonlinear model was linearized in order to generate its LTI (Linear Time–Invariant) state–space form. Nonlinear and linear models of the plant are necessary to implement, e.g., model–based control algorithms. For instance, a future work will use the developed LTI state–space model to design a FO (Fractional Order) MIMO controller.
本研究开发了一个多用途工厂的非线性和线性动态模型:一个由两种流量(冷水和热水)馈送的水箱,这两种流量混合产生一个流出率。这样的工厂是一个多输入多输出(MIMO)过程,有两个输入:冷水和热水流量,两个输出:水箱内水的液位和温度。这种植物在其输入和输出之间表现出相互作用,因为一种输入的变化会影响另一种输出的行为。通过实验确定了冷流量和热流量的最大值,并计算了出流量的流量系数。应用物理定律,利用实验得到的参数,建立了多输入多输出非线性动力学模型。对非线性模型的相应状态空间表示进行线性化,生成其LTI(线性时不变)状态空间形式。工厂的非线性和线性模型是实现的必要条件,例如,基于模型的控制算法。例如,未来的工作将使用开发的LTI状态空间模型来设计FO(分数阶)MIMO控制器。
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引用次数: 2
Implementation of GPS signal simulation for drone security using Matlab/Simulink 利用Matlab/Simulink实现无人机安全GPS信号仿真
H. Viet, Ki-Ryong Kwon, Soon-kak Kwon, Eung-Joo Lee, Suk-Hwan Lee, Chee-Yong Kim
In this paper, a simulation model of digital intermediate frequency (IF) GPS signal is presented. This design is developed based on mathematical model representing the digitized IF GPS signal. In details, C/A code, navigation data and P code, and the noise models are configured some initial settings simultaneously. Simulation results show that the simulated signals share the same properties with real signals (e.g. C/A code correlation properties, and the spread spectrum). The simulated GPS IF signal data can work as input for various signal processing algorithm of GPS receivers, such as acquisition, tracking, carrier-to-noise ratio (C/No) estimation, and GPS spoofing signal generation. Particularly, the simulated GPS signal can conduct scenarios by adjust SNR values of the noise generator during simulation (e.g. signal outages, sudden changes of GPS signal power), which can be used as setup experiments of spoofing/jamming interference to UAVs for drone security applications.
本文提出了数字中频GPS信号的仿真模型。本设计是在数字化中频GPS信号数学模型的基础上进行的。其中C/A码、导航数据和P码以及噪声模型同时配置了一些初始设置。仿真结果表明,仿真信号具有与实际信号相同的特性(如C/A码相关特性和扩频特性)。模拟的GPS中频信号数据可以作为GPS接收机各种信号处理算法的输入,如采集、跟踪、载波噪声比(C/No)估计、GPS欺骗信号生成等。特别是,模拟的GPS信号可以在模拟过程中通过调整噪声发生器的信噪比值来进行场景(如信号中断、GPS信号功率突然变化),可以作为对无人机进行欺骗/干扰干扰的设置实验,用于无人机安全应用。
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引用次数: 4
Flexible visually-driven object classification using the baxter robot 利用baxter机器人进行灵活的视觉驱动目标分类
Jose Avalos, O. E. Ramos
One of the main applications for the robotics industry is the classification and manipulation of manufactured objects to increase productivity. Classical open loop robotic manipulation does not allow for changes in the environment without prior re-programming. To make the system more flexible, sensors are used to reduce the error and improve the efficiency for repeatable tasks. An important improvement consists in using visual feedback to avoid mechanical errors and chaining according to real-time circumstances. This work presents the classification of a group of objects based on their color and shape. The process includes image processing, inverse kinematics, and an automation algorithm which allows the task to be defined by the user or by a specific goal. This approach is validated using the Baxter robot and its internal cameras.
机器人工业的主要应用之一是对制造对象进行分类和操作,以提高生产率。经典的开环机器人操作不允许在没有事先重新编程的情况下改变环境。为了使系统更加灵活,使用传感器来减少误差,提高可重复任务的效率。一个重要的改进在于使用视觉反馈来避免机械错误和根据实时情况链接。这幅作品根据物体的颜色和形状对一组物体进行分类。该过程包括图像处理、逆运动学和允许由用户或特定目标定义任务的自动化算法。使用Baxter机器人及其内部摄像头验证了该方法。
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引用次数: 2
Model of a QoS based on convolutions for a network based on the Internet of Bio-Nano Things 基于卷积的生物纳米物联网网络QoS模型
H. Nieto-Chaupis
In this paper, the Quality of Service (QoS) for a concrete network based in the prospective idea of the Internet of Bio-Nano Things (IoBNT) is estimated. We use the well-known mathematical convolution for the segments of the network. This methodology is applied using the simple definition of efficiency per segment. The first segment assumes the communication between nanosensor and intra-body device, whereas in the second one the intra-body device is engaged to the bio-cyber interface through the THz band. Others segments belong to the macroscopic scale but working in the MHz band. When the full QoS is estimated and assuming the most optimistic scenario, our crude estimation for the concrete case applied to nanomedicine has turned out to to be of order of 85%. In the other side, the lowest values of QoS would yield numbers below 50% by which the network might be running in those scenarios where traffic in cloud might degrade the IoBNT substantially.
本文基于生物纳米物联网(IoBNT)的远景思想,对具体网络的服务质量(QoS)进行了估计。我们对网络的各个部分使用了众所周知的数学卷积。这种方法是使用每段效率的简单定义来应用的。第一部分假设纳米传感器和体内设备之间的通信,而在第二部分中,体内设备通过太赫兹波段与生物网络接口连接。其他段属于宏观尺度,但工作在MHz频段。当对整个QoS进行估计并假设最乐观的情况时,我们对纳米医学具体案例的粗略估计结果为85%左右。另一方面,QoS的最低值将产生低于50%的数字,在云中的流量可能会大大降低IoBNT的场景中,网络可能会运行。
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引用次数: 2
Hénon map chaotic system critical points analysis and classification for the dynamic control of brain stimulation 用于脑刺激动态控制的hsamnon map混沌系统临界点分析与分类
Lei Zhang
Brain activities demonstrate chaotic behaviors which can be simulated by the outputs of chaotic systems such as Hénon map. Brain stimulation has been used to control the brain dynamics to treat certain neurological disorders such as Parkinson's disease and Epilepsy. However, these clinical practices are based on empirical trials and lack theoretical support. Moreover, the long-term effect of brain stimulation to the brain neural network remains unknown. Therefore, it is critical to review the recent clinical practices and bring up sound theoretical study for brain stimulation. This paper presents the analysis and classification of critical points of Hénon map chaotic system based on different system parameters. The dynamical control of Hénon map is based on five characteristics of chaotic systems, namely bifurcation, Lyapunov exponent, critical point, Jacobian matrix, and the eigenvalues of the Jacobian matrix evaluated at the critical point. The critical points are classified into eight types based on system parameters to evaluate the system behavior (stable or unstable), which can then be used for generating stimulation for dynamical system control. These analysis methods can be used for various chaotic systems in general.
大脑活动表现出的混沌行为可以通过混沌系统(如hsamnon map)的输出来模拟。脑刺激已被用于控制大脑动力学,以治疗某些神经系统疾病,如帕金森病和癫痫。然而,这些临床实践都是基于经验试验,缺乏理论支持。此外,脑刺激对脑神经网络的长期影响尚不清楚。因此,回顾近年来的临床实践,提出完善的脑刺激理论研究是至关重要的。基于不同的系统参数,对hsamnon映射混沌系统的临界点进行了分析和分类。基于混沌系统的分岔、Lyapunov指数、临界点、雅可比矩阵和雅可比矩阵在临界点处的特征值这五个特征,对hsamuno映射进行了动态控制。根据系统参数将临界点划分为8种类型,以评估系统行为(稳定或不稳定),然后可用于产生动力系统控制的激励。这些分析方法一般适用于各种混沌系统。
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引用次数: 3
Complete band-gap prediction of 2D photonic crystals by using multilayer perceptron 利用多层感知器完成二维光子晶体的带隙预测
Adriano da Silva Ferreira, H. Figueroa, Gilliard Nardel Malheiros Silveira
In this paper, a Multilayer Perceptron artificial neural network is modeled to estimate complete photonic band-gaps (C-PBGs) of bi-dimensional photonic crystals. Unit cells of square lattice photonic crystals, composed of two silicon round rods and embedded in air, have been designed by an artificial immune network algorithm, and their geometries have been stored in a database along with their C-PGBs. Tests using unknown unit cells assess and demonstrate the C-PBG predicting capability of the modeled Multilayer Perceptron.
本文建立了一个多层感知器人工神经网络模型,用于估计二维光子晶体的完全光子带隙。采用人工免疫网络算法设计了由两根硅圆棒组成的嵌入空气中的方形晶格光子晶体单元格,并将其几何形状与其C-PGBs一起存储在数据库中。使用未知单元格的测试评估并证明了模型多层感知器的C-PBG预测能力。
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引用次数: 4
Speed vector control strategy with torque ripple reduction for 12/8 switched reluctance motor 12/8开关磁阻电机转矩脉动减小的速度矢量控制策略
K. A. C. Chirapo, J.A. Torrico, A. S. Filho, J. Azcue, I. Delgado-Huayta
In this paper, a new strategy of speed vector control is proposed for reducing the torque ripple of a Switched Reluctance Motor (SRM). The SRM is characterized by its simple manufacturing, robustness, reliability and high-speed operation. However, the SRM also presents high torque ripple and acoustic noise. The proposed vector control strategy is implemented in the stationary reference frame and it is performed with three PI controllers. Furthermore, the reference voltage vector is synthesized using a space vector modulation technique for an asymmetric half-bridge converter. The proposed system was validated through simulations performed in SimPowerSystems of Matlab/Simulink. It was compared the simulation results of the proposed strategy with a traditional speed control method verifying its good performance.
本文提出了一种新的速度矢量控制策略,以减小开关磁阻电机的转矩脉动。SRM具有制造简单、坚固可靠、高速运行等特点。然而,SRM也存在较大的转矩脉动和噪声。提出的矢量控制策略在静止参考系中实现,并使用三个PI控制器进行控制。此外,采用空间矢量调制技术合成了非对称半桥变换器的参考电压矢量。在Matlab/Simulink的SimPowerSystems中进行了仿真验证。仿真结果与传统的速度控制方法进行了比较,验证了该策略的良好性能。
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引用次数: 2
期刊
2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)
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