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2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)最新文献

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A Hybrid fault diagnosis approach for PV generators based on I-V and P-V characteristics analysis 基于I-V和P-V特征分析的光伏发电机组混合故障诊断方法
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429416
Noureddaher Zaidi, A. Khedher, M. Jemli
In this paper, we present a hybrid fault diagnosis approach dedicated for PV generators via current-voltage and power-voltage curves analysis. It is mainly based on two signature generators: a fuzzy logic classifier and a based threshold conventional one. The two classifiers act on the available data by considering three thresholds which are made according to the generator PV typical parameters and with a total conformity with the standards. The proposed fault diagnosis approach requires only the available measured variables and is able to identify the most frequently met faults related to shading, temperature, leakage current and increased series resistance losses. The addressed PV generators are based on one diode model. The overall results have proved the proposed methodology capability in PV faults detection and identification.
本文提出了一种基于电流-电压和功率-电压曲线分析的光伏发电机组混合故障诊断方法。它主要基于两个签名生成器:模糊逻辑分类器和基于阈值的常规签名生成器。这两种分类器通过考虑三个阈值对可用数据进行处理,这三个阈值是根据发电机组光伏典型参数设定的,并且完全符合标准。所提出的故障诊断方法只需要可用的测量变量,并且能够识别与遮阳、温度、泄漏电流和增加的串联电阻损失相关的最常见故障。所述的光伏发电机是基于一个二极管模型。总体结果证明了该方法在光伏故障检测和识别方面的能力。
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引用次数: 1
Comparative Study of Digital Filters for a Smart Glove Functionalized with Nanocomposite Strain Sensor 纳米复合应变传感器功能化智能手套数字滤波器的比较研究
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429298
B. B. Atitallah, J. R. Bautista-Quijano, Haythem Ayari, Ahmed Yahia Kallel, D. Bouchaala, N. Derbel, O. Kanoun
Nowadays, the demand for flexible and wearable measurement systems is significantly increasing. Thereby, sensors based on carbon nanotubes (CNT) materials are gaining importance due to their high flexibility, sensitivity and medical compatibility. Nanocomposite based strain sensors present an interesting potential of movements detection that helps to build the basis for body attached sensor networks, which have the capability for tracking finger movements, gestures and grasping. However, the output of the sensor is noisy and having outliers due to the random deformation of the CNT conductive paths during applied strain, which needs to be filtered. This paper presents S-TPU/C-TPU strain sensors attached to a glove for hand gesture recognition. A filtering study has been conducted of four digital filters for real-time processing of the recorded data (Moving average, Moving median, Savitzky-Golay, and Gaussian), which is required to improve the quality of the data for better gesture identification and classification. The filters are evaluated based on their real-time response and smoothing performance. The Savitzky-Golay filter was found to be the most suitable filter to remove the inherent noises and smooth the baseline and curves of the signal with a fast real-time response equal to 0.072s.
如今,对灵活、可穿戴的测量系统的需求正在显著增加。因此,基于碳纳米管(CNT)材料的传感器由于其高灵活性、灵敏度和医学兼容性而变得越来越重要。基于纳米复合材料的应变传感器呈现出一种有趣的运动检测潜力,有助于为身体附着传感器网络建立基础,该网络具有跟踪手指运动,手势和抓取的能力。然而,传感器的输出是有噪声的,并且由于CNT导电路径在施加应变期间的随机变形而具有异常值,需要对其进行滤波。本文介绍了一种附着在手套上的S-TPU/C-TPU应变传感器。对记录数据进行实时处理的四种数字滤波器(移动平均、移动中值、Savitzky-Golay和高斯)进行了滤波研究,以提高数据质量,更好地进行手势识别和分类。根据滤波器的实时响应和平滑性能对其进行评价。Savitzky-Golay滤波器是去除固有噪声、平滑信号基线和曲线的最合适的滤波器,具有0.072s的快速实时响应。
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引用次数: 5
Three-Level NPC Shunt Active Filter Powered by a Hybrid Fuel-Cell/Battery DC Bus Voltage 由混合燃料电池/电池直流母线电压供电的三电平NPC并联有源滤波器
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429308
B. Bourouis, H. Djeghloud, H. Benalla
This paper concerns the application of a NPC three-level shunt active power filter for damping harmonic disturbances from a three-phase feeder. The main contribution of the article is the elaboration of an algorithm dedicated to manage the energy in the hybrid fuel cell/battery DC bus feeding the SAPF. Design of active and passive components is presented. The control circuit is based on the SRF algorithm for detecting the reference harmonic currents and on the phase-shifted carrier-based PWM technique for gating signals generation. Moreover, dimensioning of the SAPF input DC bus voltage and AC output current PI regulators are provided. The study is validated through computer simulations using MATLAB/Simulink. The checked THDs of the feeder voltage and current, power factor and current unbalance rate, demonstrate a satisfying improvement in the power quality of the feeder.
本文研究了NPC三电平并联有源电力滤波器在三相馈线谐波抑制中的应用。本文的主要贡献是阐述了一种算法,该算法专门用于管理混合燃料电池/电池直流母线馈送SAPF的能量。介绍了有源元件和无源元件的设计。控制电路采用SRF算法检测基准谐波电流,采用基于相移载波的PWM技术产生门控信号。此外,还提供了SAPF输入直流母线电压和交流输出电流PI稳压器的尺寸。利用MATLAB/Simulink进行了仿真验证。对馈线电压和电流、功率因数和电流不平衡率的检测结果表明,馈线的电能质量得到了令人满意的改善。
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引用次数: 1
A Top Down Approach to Ensure the Continuity of the Different Design Levels of Swarm Robots 一种保证群机器人不同设计层次连续性的自顶向下方法
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429301
K. Aloui, A. Guizani, M. Hammadi, M. Haddar, T. Soriano
Swarm engineering is a systematic application of scientific and technical knowledge to specify requirements, model, design, realize, verify, validate, operate and maintain a swarm intelligence system. In swarm robotics, there is not a well-structured methodology until today for developing robotic swarm systems. Several researchers have developed steps to design swarm robots but these steps are still incomplete. In this paper, we focus on the functional architecture of the swarm robots where we propose a top-down approach to ensure consistency and continuity from requirement level to behavioral level up to the functional and structural levels. This approach is based on the Model-Based Systems Engineering method (MBSE) using the Systems Modeling Language (SysML) where we present the allocations between the functions of each swarm member and the overall swarm behaviors. Then, we will be interested in the architecture of Robot Operating System (ROS) of a swarm behavior where we identify the allocations between the component and the functions of a robot.
群体工程是系统地应用科学技术知识来确定需求、建模、设计、实现、验证、验证、运行和维护群体智能系统。在群体机器人中,直到今天还没有一个结构良好的方法来开发机器人群体系统。一些研究人员已经开发出设计群体机器人的步骤,但这些步骤仍然不完整。在本文中,我们重点研究了群机器人的功能架构,提出了一种自顶向下的方法来确保从需求层到行为层再到功能和结构层的一致性和连续性。该方法以基于模型的系统工程方法(MBSE)为基础,利用系统建模语言(SysML)给出了每个群体成员的功能和整体群体行为之间的分配。然后,我们将对群体行为的机器人操作系统(ROS)的体系结构感兴趣,其中我们确定了机器人组件和功能之间的分配。
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引用次数: 3
Energy management system for a Stand-alone Wind/ Diesel/ BESS/ Fuel-cell Using Dynamic Programming 基于动态规划的独立风/柴油/ BESS/燃料电池能源管理系统
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429362
Mohamed-hamza Laraki, B. Brahmi, C. El‐Bayeh, M. Rahman
This paper deals with the optimal energy management system (EMS) in wind-based stand-alone microgrid. A new day-ahead integrated control based on dynamic programming (DP) is proposed to optimize the power flow and enhance the battery's lifetime. Defined constraints help to set system limits for safe operation. Finally, the economic model allow us to define the parameters of the system to be optimized. Simulation results using MATLAB/SIMULINK show the effectiveness of the proposed EMS.
本文研究了风力单机微电网的最优能量管理系统。提出了一种基于动态规划(DP)的日前综合控制方法,以优化潮流,提高电池寿命。定义约束有助于为安全操作设置系统限制。最后,经济模型允许我们定义要优化的系统的参数。利用MATLAB/SIMULINK进行的仿真结果表明了该方法的有效性。
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引用次数: 2
CMOS Bio-medical Amplifier based on Tera-Ohm Pseudo-resistor for Bio-detection System 生物检测系统中基于太欧姆伪电阻的CMOS生物医用放大器
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429430
Israa Y. AbuShawish, S. Mahmoud
This work presents the design of a CMOS bio-medical amplifier using $mathrm{T} Omega$ pseudo-resistor based on MOS transistors operating in the weak inversion region. The pseudo-resistor is utilized as a feedback element in the first and second stage of the two-stages bio-medical amplifiers in the portable bio-detection system. Analytical analysis and simulations in LT-spice using 130 nm CMOS technology are performed to validate the realization of the extremely high resistance which can be reached to over tens of $mathrm{T} Omega$. The simulation of the two-stages bio-medical amplifier based pseudo-resistor are carried out in LT-spice using ± 0.6 V supply. The LT-spice simulation results are confirming with both the results obtained by the MATLAB and the analytical analysis of the pseudo-resistor.
本文提出了一种基于MOS晶体管工作在弱反转区的CMOS生物医学放大器的设计,该放大器采用$math {T} Omega$伪电阻。在便携式生物检测系统中,伪电阻用作两级生物医学放大器的一级和二级反馈元件。在LT-spice中使用130 nm CMOS技术进行了分析分析和仿真,以验证极高电阻的实现,该电阻可达到数十美元 mathm {T} Omega$。采用±0.6 V电源,在LT-spice中对基于伪电阻的两级生物医学放大器进行了仿真。LT-spice仿真结果与MATLAB仿真结果和伪电阻器的解析分析结果相吻合。
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引用次数: 5
MISO fractional systems identification with fractional models in the EIV context 在EIV环境中使用分数模型的MISO分数系统识别
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429412
Noura Ben Moussa, M. Chetoui, M. Amairi
This paper proposes a new multi-input-single-output (MISO) system identification methods with fractional models in the errors-in-variables context. The developed methods are based on the instrumental variables and use the Higher-Order Statistics (HOS), such as the third-order cumulants, to obtain an unbiased estimate. Two different cases are established : the first supposes that the fractional orders of the single input-single-output (SISO) systems decomposing the MISO system are known a priori and only their linear coefficients are estimated. In the second case, the fractional orders are optimized along with linear coefficients. A Monte Carlo simulations are used, in a numerical example, to analyze the consistency of the developed estimators.
提出了一种基于分数阶模型的多输入单输出系统辨识方法。所开发的方法是基于工具变量,并使用高阶统计量(HOS),如三阶累积量,以获得无偏估计。建立了两种不同的情况:第一种情况假设分解MISO系统的单输入-单输出(SISO)系统的分数阶是先验已知的,并且只估计它们的线性系数。在第二种情况下,分数阶与线性系数一起优化。在一个数值例子中,用蒙特卡罗模拟分析了所提出的估计量的一致性。
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引用次数: 1
The impact of electrodes on the reduction of anisotropy in biological tissue 电极对降低生物组织各向异性的影响
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429393
Chaima Dhifallah, N. Hamdaoui, S. Ameur, R. Ajjel
The aim of the research is to find the most suitable electrode that can be used to estimate the electrical behavior of cells and biological tissue by measuring the aging of the fish and obtaining results according to physical analysis. For this purpose, the measurements were performed in the frequency range of 1 Hz to 7 MHz, where two areas of dispersion are indicated, $alpha$ dispersion at low frequency and $beta$ dispersion at high frequency. The result shows that the cylindrical electrode is more suitable for measurement because it solves the problem of fiber anisotropy. In addition, the needle electrode has higher resistance values compared to the other electrode.
研究的目的是通过测量鱼的老化,并根据物理分析得出结果,寻找最合适的电极,用于估计细胞和生物组织的电学行为。为此,测量在1 Hz至7 MHz的频率范围内进行,其中表示两个色散区域,$alpha$低频色散和$beta$高频色散。结果表明,圆柱电极解决了光纤各向异性的问题,更适合于测量。此外,针电极比其他电极具有更高的电阻值。
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引用次数: 0
Neighbor-Assisted Localization for Massive MIMO 5G Systems 大规模MIMO 5G系统的邻居辅助定位
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429525
Amal Sellami, Leila Nasraoui, L. N. Atallah
In this paper, we propose a multi-stage localization technique that enables to determine the position of a Target User Equipment (T-UE) with harsh channel conditions through the assistance of neighboring User Equipments (UEs). The proposed approach allows a reduced-complexity localization by minimizing the search space through multistage treatment. A neighbor discovery processing is first performed to identify the two nearest neighboring UEs among a set of UEs in the vicinity. The so selected neighbors are used as anchors (A-UE). Then, based on the signal strength, the distances separating the two A-UEs to the T-UE are determined. The distance estimates are used to plot two potential solutions of the Angle of Arrival (AoA) of T-UE. To distinguish the correct AoA estimate, oriented beamforming is performed around short arcs centered on the two AoA candidates. The user's position is then deduced based on the estimates of the AoA and the distance to the A-UEs. Our approach exploits the capabilities of neighbor discovery and oriented beamforming to provide an accurate position estimate for UEs experiencing harsh channel conditions that render direct localization at the base station difficult.
在本文中,我们提出了一种多阶段定位技术,该技术能够通过相邻用户设备(ue)的辅助来确定具有恶劣信道条件的目标用户设备(T-UE)的位置。该方法通过多级处理最小化搜索空间,从而降低了定位的复杂性。首先执行邻居发现处理,以在附近的一组终端中识别最近的两个相邻终端。选择的邻居被用作锚点(A-UE)。然后,根据信号强度,确定两个a - ue到T-UE之间的距离。利用距离估计绘制了T-UE到达角(AoA)的两个可能解。为了区分正确的AoA估计,在以两个候选AoA为中心的短弧周围进行定向波束形成。然后根据AoA的估计和到ua的距离推断出用户的位置。我们的方法利用邻居发现和定向波束形成的能力,为遇到恶劣信道条件的终端提供准确的位置估计,这些条件使得基站的直接定位变得困难。
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引用次数: 3
Comparative of Swarm Intelligence based Wrappers for sEMG Signals Feature Selection 基于群智能的表面肌电信号包装器特征选择比较
Pub Date : 2021-03-22 DOI: 10.1109/SSD52085.2021.9429511
Hiba Hellara, Rim Barioul, S. Sahnoun, A. Fakhfakh, O. Kanoun
This paper proposes a comparative of binary swarm optimization based wrappers for ElectroMyography (EMG) feature selection. Time-domain and frequency-domain features are extracted from two EMG channels to evaluate the effect of each of them according to the accuracy and computational costs. Six binary algorithms are used in this study namely Grey Wolf Optimizer (GWO), Whale Optimization Algorithm (WOA), Moth-Flame Optimization (MFO), Salp Swarm Algorithm (SSA), Bat Algorithm (BA), and Particle Swarm Optimization (PSO) in the domain of machine learning for feature selection and classification. Results prove that time-domain features are enough to give satisfying classification accuracy, WOA is giving the best average classification accuracy of 80.15% but needs more execution time. Compared with others, SSA is the best algorithm according to the number of selected features, execution time, and fitness function 78.25% as accuracy.
本文提出了一种基于二元群优化的肌电特征选择方法。从两个肌电信号通道中提取时域和频域特征,根据准确率和计算成本来评估每个通道的效果。本研究在机器学习领域使用了灰狼优化算法(GWO)、鲸鱼优化算法(WOA)、蛾焰优化算法(MFO)、Salp Swarm算法(SSA)、蝙蝠算法(BA)和粒子群优化算法(PSO)等六种二元算法进行特征选择和分类。结果表明,时域特征足以获得满意的分类精度,WOA的平均分类精度为80.15%,但需要更多的执行时间。与其他算法相比,从选择特征的数量、执行时间和适应度函数的准确率(78.25%)来看,SSA是最好的算法。
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引用次数: 5
期刊
2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)
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