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71篇 您的检索式:作者名="Swe"
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1并网光伏逆变器鲁棒分数阶滑模控制设计显示文摘本文设计了一款基于扰动观测器的鲁棒分数阶滑模控制(POFO–SMC)来实现光伏逆变器的最大功率跟踪(MPPT).首先,将光伏逆变器的非线性、参数不确定性以及未建模动态聚合成一个扰动,并通过扰动观测器对其进行在线估计.随后,采用分数阶滑模控制(FOSMC)对该扰动估计进行实时完全补偿,从而实现不同工况下全局一致的控制性能.同时,POFO–SMC采用扰动实时估计而非传统滑模控制(SMC)中所使用的扰动上限值进行补偿,因此可有效解决传统SMC过于保守的缺点,使得控制成本更为合理.最后,POFO–SMC无需精确的系统模型,仅需测量光伏逆变器的q轴电流和直流侧电压,因此易于硬件实现.本文进行了两个算例的研究,即光照强度变化和电网电压跌落.仿真结果表明,与传统PI控制、反馈线性化控制(FLC)、SMC和FOSMC相比,POFO–SMC在各类工况下均具有最好的动态特性及最高的鲁棒性.基于dSpace的硬件在环实验(HIL)验证了其硬件可行性.杨博 THIDAR Swe 钟林恩 束洪春 余涛 孙立明 2020控制理论与应用2020,37,2:5
2Effect of silicone oil on the microstructure, gelation and rheological properties of sorbitan monostearate–sesame oil oleogels显示文摘Oleogels contain oil or a non-polar liquid which is gelled with an agent called an organogelator. The aim of this study was to evaluate the effects of the addition of silicone oil(cyclopentasiloxane) to the gelation process and to the properties of sorbitan monostearate(SMS)–sesame oil oleogel and compared with that of SMS–sesame oil oleogel and SMS–cyclopentasiloxane oleogel. Three different oil phases; sesame oil phase, cyclopentasiloxane phase and a mixture of cyclopentasiloxane and sesame oil, were used to prepare oleogels with SMS gelator. The critical gelling concentrations(CGC) for oleogels were determined using different concentration of SMS in a range of 5%–22%(w/w). The characterization of the developed oleogels was done using Fourier transform infrared spectroscopy(FTIR), polarized light microscope, rheometer, X-ray diffraction(XRD) and differential scanning calorimetry(DSC). The addition of cyclopentasiloxane reduced the CGC of SMS–sesame oil oleogel from 20% to 10%(w/w). In microscopic characterization, the oleogels with a mixture of oil phases showed the longer and thicker three-dimensional gel network than that of oleogels with sesame oil and cyclopentasiloxane. FTIR studies demonstrated that this network formation was mainly due to hydrogen bonding. Rheological measurements revealed that the combination of cyclopentasiloxane and sesame oil produced strong gel with higher complex modulus values and longer linear viscoelastic region than oleogels prepared with sesame oil and cyclopentasiloxane. In addition, oleogels with the combination of the two oils had higher enthalpy( H m) and entropy( S m) thus could increase thermodynamic stability of the oleogels. Therefore, the addition of cyclopentasiloxane can improve the physical, ther-mal properties and stability of SMS–sesame oil oleogel, provide greater sensory profile and better product aesthetics. The developed oleogel can be a novel carrier for topical drug delivery.Mya Thet Htar Swe Panida Asavapichayont 2018Asian Journal of Pharmaceutical Sciences2018,13,5:3
3阴影条件下基于迁移强化学习的光伏系统最大功率跟踪显示文摘在光伏系统中,光伏阵列往往会受到阴影条件(partial shading condition,PSC)的影响,造成光伏系统输出功率偏低以及功率-电压(P-V)特性曲线出现多峰值的现象,从而导致常规最大功率跟踪(maximum power point tracking,MPPT)算法易陷入局部最优的问题.对此,设计一种基于迁移强化学习(transfer reinforcement learning,TRL)的MPPT算法.该算法将连续变量的动作空间分解为若干个小范围的子搜索空间,从而有效提高TRL的学习效率.同时,引入知识迁移,即将旧任务的最优知识矩阵应用到新任务中,进而大幅提高TRL的收敛速度.通过对3种算例的研究,即恒温变光照强度、变温变光照强度和香港实地测试,其仿真结果表明,与传统增量电导法(incremental conductance,INC)、遗传算法(genetic algorithm,GA)、粒子群优化(particle swarm optimization,PSO)算法、人工蜂群(artificial bee colony,ABC)算法、布谷鸟算法(cuckoo search algorithm,CSA)、教-学优化(teaching-learning based optimization,TLBO)算法以及Q学习算法相比,TRL能在PSC下实现最快速的全局最大功率跟踪,同时具有最小的功率波动.最后,基于dSpace的硬件在环实验验证了TRL的硬件可行性.杨博 THIDAR Swe 钟林恩 束洪春 张孝顺 余涛 2020控制与决策2020,35,12:2
4Study of Unsteady Flow Simulation of Backward Impeller with Non-uniform Casing显示文摘The flow characteristics of the centrifugal fans with different blade outlet angles are basically discussed on steady and unsteady simulations for a rectangular casing fan. The blade outlet angles of the impellers are 35° and 25° respectively. The unsteady flow behavior in the passage of the impeller 35° is quite different from that in the steady flow behavior. The large flow separation occurs in the steady flow field and unsteady flow field of the impeller 35°, the flow distribution in the circumferential direction varies remarkably and the flow separation on the blade occurs only at the back region of the fan; but the steady flow behavior in the impeller 25° is almost consistent with the unsteady flow behavior, the flow distribution of the circumferential direction doesn't vary much and the flow separation on the blade hardly occurs. When the circumferential variation of the flow in the impeller is large, the steady flow simulation is not coincident to the unsteady flow simulation.War War Min Swe Hiroya MORIMATSU Hidechito HAYASHI Tetsuya OKUMURA Ippei ODA 2017Journal of Thermal Science2017,26,3:2
5Spontaneous ehylopericardium: delineation of the underlying anatomic pathology byCT lymphangiography显示文摘Itkin M Swe NM Shapiro SE 2009Ann Thorac Surg2009,87,5:1
6Exact solutions of some coupled nonlinear partial differential equations using the homotopy perturbation method显示文摘SWE N H KHA M M 2009Compu Math Appl2009,58,1112:1
7Beta2blockers inchronic heart failure显示文摘Gheorghiade M Colucci W S Swe derg K 2009Circulation2009,107,12:1
8Government backs proteome proposal显示文摘SWE^BANKS D 1995Nature1995,378,:1
9zVAD-fmk and DEVD-Cho induced late mitosis arrest and apoptotic expressions 显示文摘Swe M Sit KH 2000Apoptosis2000,5,1:1
10Using Conversant Media as a Collaborative Learning Tool in Teacher Education 显示文摘Myint Swe Khine and Atputhasamy Lourdusamy 2003Australian Journal of Educational Technology2003,19,2:1
11400 MW SMES power conditioning system development and simulation显示文摘 Bucci B M Swe K T 1993IEEE Transactions on Power Electronics1993,8,3:1
12Prevalence of hypertension and its associated factors in the adult population in yangon division, Myanmar显示文摘Ko-- Ko-- Zaw Tint -- Swe -- Latt Phyu -- Phyu -- Aung 2011Asia --Pacifie Journal of Public Health2011,23,4:1
13Prevalence of Hypertension and Its Associated Factors in the Adult Population in Yangon Division, Myanmar 显示文摘Ko -Ko - Zaw Tint - Swe - Latt Phyu - Phyu - Aung 2011Asia - Pacific Journal of Public Health2011,,23:1
14Fault Tolerance Virtual Router for Linux VirtUal Server显示文摘Swe Kyawt Shinn 2009IEEE Computer Society2009,,:1
15Uterine leiomyoma: correla- tion between signal intensity on magnetic resonance imaging and pathologic characteristics显示文摘Swe TT Onitsuka H Kawamoto K 1992Radiat Med1992,10,:1
16Uterine leiomyoma: correlation between signal intensity on magnetic resonance imaging and pathologic characteristics 显示文摘Swe Tr Onitsuka H Kawamoto K 1992Radiat Med1992,10,6:1
17Z-VAD-FMK and DEVD-CHO induced late mitosis arrest and apoptotic expressions显示文摘Swe M Sit K H 2000Apoptosis2000,5,1:1
18Spontaneous chylopericardium:delineation of the underlying anatomic pathology by CT lymphangiography显示文摘Itkin M Swe NM Shapiro SE 0,,:1
19Beta-blockers in chronic heart failure显示文摘Gheorghiade M Colucci W S Swe derg K 2009Circulation2009,107,:1
20Biological sulphate reduction using gas-lift reactor fed with hydrogen and carbon dioxide as energy and carbon source显示文摘Renze T van Houten and Hielke van swe Spodl 1996Biotechnology and Bioengineering1996,50,5:1
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