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2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)最新文献

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Compensation of the Magnetic Gradient Instability in MRI by Measurements Data for Several Angular Orientations 几种角度取向测量数据对MRI磁梯度不稳定性的补偿
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477435
A. Komarov, O. Naguliak, A. Netreba, S. Radchenko, O. Sudakov
The reconstruction of the magnetic resonance images for different levels of the gradient systems instability is considered. The original technique for minimizing the negative effect of deviations of measurement points in K-space on the quality characteristics of reconstructed tomograms is proposed. On the example of real MR image processing limit values of instability parameters are determined taking into account the possibilities of their compensation. It is shown that the construction of several tomograms for different angular positions of transverse magnetic gradient systems with subsequent integration makes it possible to increase their informatively.
考虑了不同梯度系统不稳定程度下的磁共振图像重建。提出了一种减小k空间测量点偏差对重建层析图质量特征负面影响的原始技术。以实际磁共振图像处理为例,考虑不稳定参数补偿的可能性,确定了不稳定参数的极限值。结果表明,对横向磁梯度系统的不同角度位置构造若干层析图并进行积分,可以增加其信息量。
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引用次数: 2
Small-Signal Modeling of the Single-Phase Asymmetrical Cascaded Multilevel Inverter 单相非对称级联多电平逆变器的小信号建模
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477548
Andre Felicio de Sousa Silva, S. P. Pimentel, E. G. Marra
This paper presents a small-signal model of the single-phase asymmetrical cascaded h-bridge multilevel inverter (ACHMI), mainly related to several applications like voltage/current controllers design, power factor control and active power filter, related or not to photovoltaic (PV) systems. The multilevel inverter considered in this work has the asymmetrical configuration, and its individual dc-link voltages are scaled by the factor (1:2:6:…), which guarantee a low Total Harmonic Distortion (THD) in the output voltage. The proposed small-signal model is presented step-by-step considering a case of study related to 3 h-bridge series connected in order to compose the asymmetrical cascaded multilevel inverter topology. An average model (‘large-signal model’) is also presented and both models are discussed in terms of linearization and disturbance rejection around an operational point. A computational model has been developed and tested in MATLAB/SIMULINK environment. Simulation results are presented and discussed in terms of model validation. Tracking performance from the small-signal model was pursued and some conclusions are also presented. Briefly, the model performance validated the approach method of modeling and its capability to emulate the dynamical behavior of the asymmetrical cascaded topology.
本文提出了单相不对称级联h桥多电平逆变器(ACHMI)的小信号模型,主要涉及与光伏(PV)系统相关或无关的电压/电流控制器设计、功率因数控制和有源电力滤波器等几个应用。本文所考虑的多电平逆变器具有非对称结构,其各个直流链路电压按因子(1:2:6:…)缩放,从而保证了输出电压的低总谐波失真(THD)。以3 h桥串联构成非对称级联多电平逆变器拓扑为例,逐步介绍了所提出的小信号模型。还提出了一个平均模型(“大信号模型”),并从线性化和围绕一个工作点的干扰抑制的角度讨论了这两个模型。在MATLAB/SIMULINK环境下建立了计算模型并进行了测试。给出了仿真结果,并从模型验证的角度进行了讨论。对小信号模型的跟踪性能进行了研究,并得出了一些结论。简单地说,模型的性能验证了该方法的建模方法及其模拟非对称级联拓扑动态行为的能力。
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引用次数: 2
Influence of Pt Nanoparticles in Porous Silicon on Performance of MISFET Sensor 多孔硅中Pt纳米颗粒对MISFET传感器性能的影响
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477500
O. Kutova, T. Borodinova, M. Dusheiko, B. Loboda, T. Obukhova, S. V. Tkach
In the paper influence of Pt nanoparticles in porous silicon on FET sensor performance is investigated. It is shown that combination of porous silicon with metal nanoparticles decreases response time and increases sensitivity of hydrogen peroxide sensor up to 8 mkA/%.
本文研究了多孔硅中Pt纳米颗粒对FET传感器性能的影响。结果表明,多孔硅与金属纳米颗粒的结合使过氧化氢传感器的响应时间缩短,灵敏度提高至8 mkA/%。
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引用次数: 1
Aerial Systems with Micro Sensors: Data Acquisition and Descriptive Reality in Physical and Virtual Environments 带有微传感器的航空系统:物理和虚拟环境中的数据采集和描述现实
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477493
Jacob A. Allison, S. Lyshevski
Swarm autonomy, coordination and surveillance capabilities for multi-mission multi-functional aerial systems depend on distributed control, sensing and data acquisition. Recently emerged multi-degree-of-freedom microelectronic and MEMS acoustic, electromagnetic, image and inertial sensors empower autonomy, perception of reality, computer vision, augmented reality, situational awareness and other mission-critical tasks. Open problems in system design, complexity and software-hardware co-design motivate authors to focus on fundamental studies and technology developments in sensing and information fusion. Networking and data fusion from multi-mode navigation and image sensors are studied. We examine control and autonomy capabilities emulating tasks and mission environments. The distributed algorithms empower individual-and swarm aerial systems. We report solutions developed in Python, C and MATLAB supporting data processing, data visualization, interactions, interfacing and physical-and-virtual reality. The descriptive reality and information management are demonstrated by performing low-fidelity studies for DJI Phantom with heterogeneous sensors. Augmentation of control and tactical autonomy are studied.
多任务多功能空中系统的群自治、协调和监视能力依赖于分布式控制、传感和数据采集。最近出现的多自由度微电子和MEMS声学、电磁、图像和惯性传感器增强了自主性、现实感知、计算机视觉、增强现实、态势感知和其他关键任务。系统设计、复杂性和软硬件协同设计方面的开放性问题促使作者关注传感和信息融合的基础研究和技术发展。研究了多模式导航和图像传感器的组网和数据融合。我们研究模拟任务和任务环境的控制和自主能力。分布式算法为个体和群体空中系统提供了支持。我们报告用Python、C和MATLAB开发的解决方案,支持数据处理、数据可视化、交互、接口以及物理和虚拟现实。通过对具有异构传感器的DJI幻影进行低保真度研究,证明了描述真实性和信息管理。研究了控制增强和战术自主。
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引用次数: 1
Control Rapidity Optimization Technique of DC-Motor Driven by Quasi-Resonant Converter Using Pontryagin's Maximum Principle 基于庞特里亚金极大值原理的准谐振变换器驱动直流电机控制速度优化技术
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477491
Anatoliy S. Revko, Roman D. Yershov
The control optimization technique by the rapidity criterion, based on the maximum principle proposed by L.S. Pontryagin, was applied to the differential equations system, which is describes the DC-motor in time domain, and is constructed based on its dynamic model. A quasi-resonant pulsed converter keeps the DC-motor armature voltage stable. An optimal duration of each pulse in control sequence was calculated. Proposed approach allows calculating both the precision motions and rotations of DC-motor, and at the same time, with the highest possible rapidity. Analytical research was confirmed by simulation and experimental results that are agree each other accurate to a few percent. Proposed method allows calculation the optimal motion trajectories for precise magnetic recorders and robotic arms.
将基于庞特里亚金(L.S. Pontryagin)提出的极大值原理的速度准则控制优化技术应用于在时域上描述直流电机的微分方程组,并在此基础上建立直流电机的动力学模型。准谐振脉冲变换器保持直流电机电枢电压稳定。计算了控制序列中各脉冲的最优持续时间。所提出的方法可以同时计算直流电机的精确运动和旋转,同时具有尽可能高的速度。分析研究结果与实验结果吻合,精度在百分之几以内。该方法可用于计算精密磁记录仪和机械臂的最优运动轨迹。
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引用次数: 5
Conductive EMI Modeling of Half-Bridge GaN Power Stage 半桥GaN功率级的导电电磁干扰建模
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477543
Y. Makarenko, Y. Onikienko, V. Pilinsky, O. Dovzhenko
Analysis of the conductive electromagnetic interferences (EMI) of the Half-bridge GaN development board EPC9062 is described. An equivalent circuit of the power stage and its mathematical model as a source of EMI is proposed. The modeling is performed in the range from 150 kHz to 30 MHz. The influence of the Common Mode component on the overall EMI level with an increasing of the switching frequency is analyzed. The graphs of the calculated and experimental EMI at the line impedance stabilization network (LISN) output are built. Experimental results and calculated ones are well matched.
对半桥式GaN开发板EPC9062的导电电磁干扰进行了分析。提出了作为电磁干扰源的功率级等效电路及其数学模型。建模在150 kHz至30 MHz范围内进行。分析了随着开关频率的增加,共模分量对整体电磁干扰水平的影响。建立了线路阻抗稳定网络(LISN)输出处的计算和实验电磁干扰图。实验结果与计算结果吻合较好。
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引用次数: 1
The Influence of the Silicon Photovoltaic Panels Spectral Response on the Seasonal Variations of the Photocurrent 硅光伏板光谱响应对光电流季节变化的影响
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477502
V. Kubov, Y. Y. Dymytrov, D. D. Ziulieiev, R. Kubova
A comparison of seasonal and diurnal variations of the photocurrent of different types of PV panels is done for cloudless conditions. PV-panels made of amorphous and crystalline silicon are compared. A simple two-component model of seasonal and diurnal variations of atmospheric transparency is proposed. Every model component is responsible for the peculiarity of spectral sensitivity of the PV-panel material.
在无云条件下,比较了不同类型光伏板的光电流的季节和日变化。比较了由非晶硅和晶体硅制成的光伏板。提出了一个简单的大气透明度季节和日变化双分量模型。每个模型组件都对pv面板材料的光谱灵敏度特性负责。
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引用次数: 3
Approbation of Evaluation Techniques of Acoustic Waves Time Delay for Sound Sources Localization 声源定位中声波时延评价技术的认可
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477565
Kozeruk Sergii, Serhiienko Oleksii
Several approaches to determine the acoustic waves time delay for sound sources localization are considered in this paper. The algorithms of time parameter estimation by means of correlation processing, phase transformation, and pulsed transition functions are presented. A comparison of techniques is performed on an example of processing the audio recordings from small arms
本文研究了几种确定声源定位中声波时延的方法。提出了利用相关处理、相位变换和脉冲跃迁函数进行时间参数估计的算法。以处理小武器录音为例,对技术进行了比较
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引用次数: 2
The Electron Spectrum of Quantum Wires in n-Si of Arbitrarily Doping Profile 任意掺杂n-Si中量子线的电子能谱
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477560
V. Grimalsky, S. Koshevaya, J. Escobedo-A., I. Moroz
Electron spectrum in doped $n$-Si quantum wires is calculated by the Thomas – Fermi (TF) method under finite temperatures. The many-body exchange corrections are taken into account. The doping profile is arbitrary. At the first stage the electron potential energy is calculated from a simple two-dimensional equation. The effective iteration scheme is proposed there. Then the energy sub-levels and wave functions are simulated from the Schrödinger equation. The expansion by the eigenfunctions of the linear harmonic oscillator is used. The quantum mechanical perturbation theory yields goods results for the lower energy sub-levels.
用Thomas - Fermi (TF)方法计算了在有限温度下掺杂$n$ si量子线中的电子能谱。考虑了多体交换修正。兴奋剂配置文件是任意的。在第一阶段,从一个简单的二维方程计算电子势能。在此基础上提出了有效的迭代方案。然后根据Schrödinger方程对能量子能级和波函数进行了模拟。利用线性谐振子的本征函数展开。量子力学摄动理论对较低能量子能级给出了良好的结果。
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引用次数: 0
The Improving Control System of Distributed Generation Sources Taking into Account Their Dynamic Parameters 考虑分布式电源动态参数的改进控制系统
Pub Date : 2018-04-01 DOI: 10.1109/ELNANO.2018.8477534
F. Tiutiunnyk, V. Kozyrskyi, Yurii Tugai, Anatoliy Prystupa
Today rapid growth of distributed generation can cause some problems that related with power system stability. The mathematical models and algorithms are playing a major part in evolution of electronic systems. Therefore, the improving of models and algorithms is fundamental problem in further systems development. The algorithm for information support an automated system has been studied. The inertia constant, which representing dynamic property of electric generator, has been founded by analyzing components of mathematical model, describing dynamics of power system. It should not be forgotten, however, that the most of the distributed generation control systems have focus on power control (P and Q) to achieve reliable operation of the local grid. The suggestions about supplementing control system algorithm of power system with distributed generation sources for concern of their dynamic properties are made. The supplementing consists of including information-feedback system (IFS) module on all hierarchical levels. This module includes data and algorithm of analyzing the stability. The structure of module and database are developed.
在分布式发电快速发展的今天,分布式发电给电力系统的稳定性带来了一些问题。数学模型和算法在电子系统的演化过程中起着重要的作用。因此,模型和算法的改进是进一步开发系统的根本问题。研究了自动化系统的信息支持算法。通过分析描述电力系统动力学的数学模型的组成部分,建立了代表发电机动态特性的惯性常数。然而,不应忘记的是,大多数分布式发电控制系统都将重点放在功率控制(P和Q)上,以实现局部电网的可靠运行。针对分布式电源系统的动态特性,提出了补充分布式电源控制系统算法的建议。补充包括所有层次的信息反馈系统(IFS)模块。该模块包括稳定性分析的数据和算法。开发了模块结构和数据库。
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引用次数: 4
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2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)
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