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2022 IEEE Biennial Congress of Argentina (ARGENCON)最新文献

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Control Orbital Autónomo Restringido de Bajos Empujes y Filtrado de Elementos Orbitales 受限制的低推力自主轨道控制和轨道元素过滤
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9939743
Tomás Burroni, Pablo Servidia
Current navigation and control technologies are used to perform a feasibility analysis of continuous and semi-continuous orbit control. In particular, a strategy based on filtered Relative Orbit Elements is proposed for an autonomous low thrust orbit control algorithm. An Earth Observation constellation with Sinthetic Aperture Radar for Differential Interferometry is taken as a reference mission for the simulations. The filter significantly reduces the variance of the relative orbit elements. This reduction, in combination with the use of current Precise Point Positioning navigation, enables the continuous low thrust control compatible with high performance electric propulsion. The same control and filtering strategies may also be implemented for formation flying.
利用现有的导航控制技术,对连续和半连续轨道控制进行可行性分析。针对自主低推力轨道控制算法,提出了一种基于滤波相对轨道元的策略。以差分干涉合成孔径雷达对地观测星座为参考任务进行仿真。该滤波器显著减小了相对轨道元素的方差。这种减少,结合当前精确点定位导航的使用,使持续的低推力控制与高性能电力推进兼容。同样的控制和过滤策略也可以用于编队飞行。
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引用次数: 0
PID based on Sliding Mode Control Design from a Reduced Order Model: A Practical Evaluation 基于降阶模型的PID滑模控制设计:一种实用评价
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9940074
Daniel Santacruz, Oscar Camacho
In this work, a robust PID controller proposal is presented. The proposed controller design is based on sliding mode control concepts from a first order plus dead-time model of the nonlinear processes. The processes for testing are a variable delay mixing tank and a Temperature Control Lab device, considered a single input and single-output system. The proposed controller is compared against the conventional PID controller and a Sliding Mode Controller using the ISE and TVu performance indexes.
在这项工作中,提出了一种鲁棒PID控制器方案。所提出的控制器设计是基于非线性过程的一阶加死时模型的滑模控制概念。测试过程是可变延迟混合槽和温度控制实验室设备,被认为是单输入单输出系统。利用ISE和TVu性能指标将所提出的控制器与传统PID控制器和滑模控制器进行了比较。
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引用次数: 1
Image Spatial Resolution Importance on Burned Wetlands Monitoring in the Paraná River - Argentina 图像空间分辨率对阿根廷帕拉纳<e:1>河湿地监测的重要性
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9940004
V. Venturini, Zuleica Yael Marchetti, A. Carrasco Milián
In Argentina, fires have always been present in the mainland ecosystems of the central-south region. However, the Paraná River wetland system has been going through a critical hydrological situation for a couple of years, which triggers many fire events that challenge the academic community as well as the local governments. Common low spatial resolutions remote sensing products seem to be unsuitable to monitor the processes associated with fire events in wetland environments. Thus, in this work we analyzed the use of vegetation indexes and surface temperature with fine spatial resolution images, such as Sentinel 2 and Landsat, to capture the variability of fire stages in the Paraná River wetlands. Our results suggest that Sentinel 2 and Landsat 8 and 9 are appropriate to monitor heterogeneous burned vegetation and its recovery.
在阿根廷,火灾一直存在于中南部地区的大陆生态系统中。然而,几年来,帕拉纳河湿地系统一直处于危急的水文状况,这引发了许多火灾事件,给学术界和地方政府带来了挑战。普通的低空间分辨率遥感产品似乎不适合监测湿地环境中与火灾事件相关的过程。因此,在这项工作中,我们分析了利用植被指数和地表温度与精细空间分辨率图像(如Sentinel 2和Landsat)来捕捉帕拉纳河湿地的五个阶段的变化。结果表明,Sentinel 2、Landsat 8和Landsat 9适合监测非均匀燃烧植被及其恢复情况。
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引用次数: 0
Behavior of Active Losses in a Real Electrical Distribution System with Insertion of Photovoltaic Generation 有光伏发电接入的实际配电系统有功损耗行为
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9940060
G. D. di Mauro, Martín M. Serna, J. Vignerte, Carlos A. Agüero, J. Strack
In the present work, an evaluation of the behavior of the active losses of an electrical energy distribution system that supplies residential users of the City of Mar del Plata (Argentina) was carried out, in which distributed photovoltaic generation was incorporated. Using computational simulation tools, a real network was modeled comprising a medium voltage feeder, medium to low voltage transformers, low voltage secondary distribution, user consumption, and solar generation sources in homes. From the simulation of the operation of the network in different photovoltaic generation insertion scenarios and for a calendar year (2019), it was possible to evaluate the behavior of different electrical variables of the system, and in particular those related to its active losses. Based on the simulations and results, it was possible to break down the composition of active losses and identify those components that influence energy savings from traditional generation systems and that contribute to an improvement in the efficiency of the distribution system; although in realistic photovoltaic generation insertion scenarios, these contributions are not significant.
在目前的工作中,对阿根廷马德普拉塔市住宅用户供电的电力分配系统的主动损耗行为进行了评估,其中纳入了分布式光伏发电。利用计算仿真工具,模拟了一个真实的网络,包括中压馈线、中低压变压器、低压二次配电、用户消耗和家庭太阳能发电源。通过对不同光伏发电插入方案和日历年(2019年)网络运行的模拟,可以评估系统不同电气变量的行为,特别是与有功损耗相关的变量。根据模拟和结果,有可能分解主动损失的组成部分,并确定影响传统发电系统节约能源和有助于提高配电系统效率的那些组成部分;虽然在现实的光伏发电插入场景中,这些贡献并不显著。
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引用次数: 0
Design of Active-RC Filters Minimizing Sensitivities with Ant Colony Optimization 基于蚁群优化的最小灵敏度有源rc滤波器设计
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9939988
Leandro Demarco Vedelago, G. Peretti, E. Romero, G. Demarco
This work employs Ant Colony Optimization (ACO) to solve active-RC bi-quadratic filter design considering passive sensitivities minimization. We propose a new discrete version (D-ACOR) based on the operating principles of ACO with real domain. We also solve the problem exactly to compare the results of the algorithms against the best possible solutions. For showing the D-ACOR performance, we take as case studies two biquadratic filters: a low-pass and a bandpass, both with an infinite-gain multiple-feedback topology. The results are excel-lent because the algorithm achieves solutions with minimal sen-sitivities that meet the specifications. Furthermore, the performance comparison with other heuristics shows that D-ACOR has lower sensitivity values and presents better computational efficiency even if it requires a more significant number of independent runs to find successful solutions.
本文采用蚁群算法求解考虑被动灵敏度最小化的有源rc双二次滤波器设计问题。基于实域蚁群算法的工作原理,提出了一种新的离散版本(D-ACOR)。我们还精确地解决了这个问题,将算法的结果与最佳可能解进行比较。为了展示D-ACOR的性能,我们以两个双二次滤波器作为案例研究:一个低通和一个带通,两者都具有无限增益多反馈拓扑。该算法以最小的灵敏度获得了满足规范要求的解,结果非常好。此外,与其他启发式算法的性能比较表明,即使D-ACOR需要更多的独立运行才能找到成功的解,但它的灵敏度值更低,计算效率更高。
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引用次数: 0
Estructura magnética de una máquina de inducción 感应机的磁性结构
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9940114
Marcelo Poncio, Eduardo Amaya, Cristian Falco, Ricardo Petrino
El modelo de circuito magnético equivalente de una máquina de inducción se resuelve operando con permeancias y sus derivadas. Este trabajo presenta una estructura matricial de esos parámetros, que permite calcular los pares de excitación y reluctancia en forma discriminada. Esta propiedad puede ser transferida al modelo de circuitos acoplados.
通过对磁导率及其导数的操作,求解了感应机的等效磁路模型。本文提出了这些参数的矩阵结构,允许以判据的形式计算激励和磁阻对。这种性质可以转移到耦合电路模型中。
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引用次数: 0
Inter-Turn Short-Circuit Detection Through Differential Admittance Monitoring in Transformers 变压器差分导纳监测匝间短路检测
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9939953
Gustavo C. B. Leal, M. Meira, C. Ruschetti, Guillermo R. Bossio, C. Verucchi
Detecting inter-turn short-circuits in power transformers at an early stage is essential to reduce repair costs and interruption times of the electrical distribution service. Differential protection relays are widely used in this type of machine to detect faults of this nature. However, they are not effective enough when the faults are in an incipient stage where only a few inter-turns are involved. Therefore, it is of interest to develop strategies that allow early detection of this type of faults. In this work, a strategy for inter-turn short-circuit detection through differential admittance monitoring is proposed. Through computational simulations on a 5 kVA transformer, it is shown that the strategy is sensitive to faults involving from 2% of the winding with a current in the fault loop of 1 p.u. Furthermore, the fault detection strategy is not sensitive to transformer load state, load or voltage unbalance, under or over voltages, and harmonic content.
电力变压器匝间短路的早期检测对于降低检修成本和减少配电中断次数至关重要。差动保护继电器在这种类型的机器中广泛使用,以检测这种性质的故障。然而,当断层处于初期阶段,只涉及少量间匝时,它们的效果不够好。因此,开发能够早期发现这类故障的策略是很有意义的。本文提出了一种利用差分导纳监测匝间短路的方法。通过对5kva变压器的计算仿真,表明该方法对故障回路中电流为1pu的2%绕组的故障敏感,且对变压器负载状态、负载或电压不平衡、欠压或过压、谐波含量不敏感。
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引用次数: 0
Mean-variance mapping metaheuristic applied to stochastic hydrothermal optimization 均方差映射元启发式算法在随机热液优化中的应用
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9939963
Martha P. Camargo M., O. Añó
The optimal programming of a hydrothermal system is considered a complex problem, given its nonlinearity, dimension, and number of restrictions. In mid-term horizon, this complexity is also related to the uncertainty associated with some input parameters, such as demand and water inflow. Simplifications have been used in conventional models to solve this optimization problem; however, considering these reductions can lead to unrealistic solutions. Given the advantages of meta-heuristic tools, in terms of simplicity of their application to solve complex problems, obtaining a solution near to optimal and considering that models developed in the literature have addressed simple cases and have not exploited the advantages of metaheuristics, this paper proposes an application based on the Mean Variance Mapping metaheuristic technique to solve the optimal programming of a hydrothermal system in the mid-term horizon. A Numerical test on a system of cascaded reservoirs is presented, where the uncertainty of the water inflows was modeled by means of a scenario tree. The results are validated with Benders’ Decomposition model. It was assumed a single-node system, describe by both linear objective function and linear restrictions, however the proposed methodology can be applied to cases with a higher degree of complexity.
热液系统的最优规划被认为是一个复杂的问题,因为它具有非线性、维度和许多限制条件。在中期,这种复杂性还与一些输入参数(如需求和水量)相关的不确定性有关。为了解决这一优化问题,对传统模型进行了简化;然而,考虑这些削减可能导致不切实际的解决方案。考虑到元启发式工具在求解复杂问题时应用简单、获得接近最优解等方面的优势,并考虑到文献中建立的模型都是针对简单情况而没有充分利用元启发式方法的优势,本文提出了一种基于Mean Variance Mapping元启发式技术的中期热液系统最优规划求解方法。本文对一个梯级水库系统进行了数值模拟试验,用情景树的方法模拟了水库来水的不确定性。用Benders分解模型对结果进行了验证。该方法假设为单节点系统,由线性目标函数和线性限制描述,但可以应用于复杂程度较高的情况。
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引用次数: 0
Evaluación de áreas del espacio vocal y formantes para caracterizar personas con y sin Enfermedad de Parkinson 评估声音空间和共振区域以确定帕金森病患者和非帕金森病患者的特征
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9939816
M. Giuliano, L. Fernández, Silvia N. Pérez, A. Renato
En las personas con la enfermedad de Parkinson (EP) puede observarse una articulación vocálica imprecisa. Las características acústicas que miden la articulación vocálica han demostrado ser indicadores eficaces para la evaluación de la EP. En diversas investigaciones se ha reportado que la articulación vocálica clínica, el índice de articulación vocálica y la relación de centralización de los formantes, son medidas relevantes para detectar la enfermedad. A partir de medidas obtenidas para una base de datos propia, nos propusimos obtener indicadores de la capacidad articulatoria que diferencien a enfermos con EP. Se calcularon variables asociadas a medidas derivadas del triángulo vocal y de los dos primeros formantes de las vocales /a/, /i/ y /u/. Algunas de estas medidas muestran diferencias medias significativas, por lo que se contemplaron en el ajuste de un modelo de regresión logística. La clasificación obtenida muestra que, si bien no logran resultados óptimos por sí mismas, las variables asociadas al triángulo vocal constituyen otros marcadores a tener en cuenta para detectar la progresión de la enfermedad de Parkinson.
在帕金森氏症(pd)患者中,可以观察到不准确的发音。本研究的目的是评估pd患者的听力损失,并评估pd患者的听力损失。在各种研究中已经报道了临床元音发音、元音发音指数和共振峰集中比是检测疾病的相关措施。从我们自己的数据库获得的测量数据,我们开始获得区分pe患者的发音能力指标。计算与元音三角形和元音/a/、/i/和/u/的前两个共振峰相关的变量。其中一些措施显示出显著的平均差异,因此在调整logistic回归模型时考虑了这些措施。所获得的分类表明,虽然它们本身不能达到最佳结果,但与发声三角相关的变量构成了检测帕金森病进展时需要考虑的其他标志物。
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引用次数: 0
Aplicaciones de datos SAR y procesamiento en la nube para el estudio de incendios en el Bosque Chaqueño Serrano SAR数据和云处理在查科塞拉诺森林火灾研究中的应用
Pub Date : 2022-09-07 DOI: 10.1109/ARGENCON55245.2022.9939995
C. G. Garay, Diego H Pons, Laura Cavallero, Juan Doblas Prieto
Este trabajo se centró en caracterizar la vegetación del Bosque Chaqueño Serrano mediante el análisis de datos SAR banda C en La Población, Córdoba. A partir de muestras (n = 150) tomadas sobre un mapa de coberturas, se construyeron series temporales provenientes del radar de apertura sintética (SAR) Sentinel-1B, expresadas en valores de retrodispersión (aγ0) en el tiempo comprendido entre abril del 2018 y abril del 2019. Se estudió la dinámica anual de las coberturas: Monte, Arbustales y Matorrales y Pastizales. Para conocer la aplicabilidad de los datos SAR en el monitoreo de la vegetación en un área del Valle de Traslasierra, la metodología de preprocesamiento de las imágenes y la construcción de series temporales se desarrollaron y adaptaron en una plataforma de geoprocesamiento en la nube con código abierto. Se consideró de manera particular el ángulo de incidencia local de las imágenes Sentinel-1B por tratarse de un área de montaña; para esto se calcularon los valores de retrodispersión gamma nought (γ0) a partir de sigma nought (σ0). Asimismo, la humedad de suelo y las precipitaciones diarias fueron estudiadas como variables explicativas en este trabajo por generar cambios en el retorno de la onda. Se espera que el esfuerzo centrado en el desarrollo metodológico de los algoritmos en la etapa del preprocesamiento de los datos SAR pueda ser una contribución técnica para los usuarios finales en el monitoreo de los bosques nativos.
本研究的目的是通过对人口SAR C带数据的分析,确定查科塞拉诺森林的植被特征。利用覆盖图上的样本(n = 150),构建了合成孔径雷达(SAR) Sentinel-1B的时间序列,表示为2018年4月至2019年4月的后向散射值(A γ0)。研究了山地、灌木、灌丛和牧场的年动态。了解适用性SAR数据监控,植被面积Traslasierra山谷preprocesamiento方法,建造时间序列图像已经开发了geoprocesamiento在云平台开源。特别考虑了Sentinel-1B图像的局部入射角,因为它是山区;为此,我们从sigma nought (σ0)计算了gamma nought (γ0)后向散射值。在这项工作中,我们研究了土壤湿度和日降雨量作为解释变量,以产生波返回的变化。希望在SAR数据预处理阶段集中精力开发算法的方法,可以为监测原生森林的最终用户提供技术贡献。
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引用次数: 0
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2022 IEEE Biennial Congress of Argentina (ARGENCON)
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