期刊文献+
共找到7,406篇文章
< 1 2 250 >
每页显示 20 50 100
Perspective of World Economy and China's External Economic Environment
1
作者 Tao Jian Chen Fengying Zhao Hongtu Zhang Yuncheng Jiang Yong Liang Jianwu Ni Jianjun Li Hongyan 《Contemporary International Relations》 2003年第12期31-63,共33页
Owing to a series of impacts of the "9·11 terrorist attack," the accounting scandals of big companies, Iraq War and the SARS crisis in the past two years, the world economy that might have rebounded for... Owing to a series of impacts of the "9·11 terrorist attack," the accounting scandals of big companies, Iraq War and the SARS crisis in the past two years, the world economy that might have rebounded forcefully has been on a wavering process of slow recovery. 展开更多
关键词 of As for Perspective of World economy and China’s External Economic Environment that been tHAN World into HAVE WILL
下载PDF
How China's young economists see the country's economy
2
作者 金碚 李钢 梁泳梅 《China Economist》 2009年第5期106-112,共7页
The Institute of Industrial Economics at the Chinese Academy of Social Sciences and China Business Journal jointly conducted an online survey on the thinking and research of China’s young economists on the country’s... The Institute of Industrial Economics at the Chinese Academy of Social Sciences and China Business Journal jointly conducted an online survey on the thinking and research of China’s young economists on the country’s economic issues. The survey lasted from June 17 to June 26,2009. 展开更多
关键词 In rate How China’s young economists see the country’s economy WILL than
下载PDF
China's Economy Approaching the World Economic Track
3
作者 Liu Rixin Research-fellow of Economic Research Centre of State Planning Commission 《China's Foreign Trade》 1994年第6期3-5,共3页
The year 1993 was the fifteenth of China’s reform and opening to the outside. Its economy sustained double digit growth for two years running. Last year, domestic GNP was RMB3,138 billion, a 13.4 percent increase com... The year 1993 was the fifteenth of China’s reform and opening to the outside. Its economy sustained double digit growth for two years running. Last year, domestic GNP was RMB3,138 billion, a 13.4 percent increase compared with the previous year’s 13.2 percent. 展开更多
关键词 World China’s economy Approaching the World Economic track will GNP
下载PDF
Special Economic Zones——New growth points in China's economy
4
作者 Sun ZhijieSEZ Office of the State Council 《China's Foreign Trade》 1996年第11期10-11,共2页
It was approved by the State Council in1984 to establish economic andtechnological development zones in 14coastal port cities to function as windows forthose cities to attract foreign investment,introduce advanced tec... It was approved by the State Council in1984 to establish economic andtechnological development zones in 14coastal port cities to function as windows forthose cities to attract foreign investment,introduce advanced technology andmanagement methods and expand the export-oriented economy. Since 1992, 18 otherdevelopment zones have been approved bythe Council, increasing the number of suchzones to 32. 展开更多
关键词 Us New growth points in China’s economy special Economic Zones
下载PDF
Coordinated development of Yunnan's frontier culture and economy under the regional economic integration pattern
5
作者 WAN Yu-ying 《Ecological Economy》 2017年第2期165-171,共7页
This paper constructs the index system by means of quantitative analysis. We choose the coordination degree of Yunnan province from 2012 to 2015. The regional cultural and economic development in Yunnan's frontier... This paper constructs the index system by means of quantitative analysis. We choose the coordination degree of Yunnan province from 2012 to 2015. The regional cultural and economic development in Yunnan's frontier are analyzed so that we can provide the reference for the sustainable development of Yunnan's frontier and realize the coordinated development of culture in Yunnan's frontier and economic system in order. The results show that the culture and economy in Yunnan's frontier are coupled with formation of the coordinated development of culture and economy; economic development is the main reason to promote the coordinated development of culture and economy in Yunnan's frontier, and it contributes to the main force of improving the coordinated development of evolution types; the coordinated development degree of the overall level is low and still in the China's backward level. 展开更多
关键词 regional economic integration culture and economy coordinated development Yunnan’s frontier
下载PDF
Policy Towards Gender Equality in Employment in a Globalizing Economy——An outline of the analysis report on the impacts of China's economic reform on women employment 被引量:1
6
作者 Li Huijing 《浙江经济》 1995年第3期6-9,共4页
1.This study is one of The Applied Economic Institutes Linkages Project(AERIL)which is funded by theCanadian International Development Agency(CIDA)and jiontly managed by The Conference Board of Canada(CBOC)and the Int... 1.This study is one of The Applied Economic Institutes Linkages Project(AERIL)which is funded by theCanadian International Development Agency(CIDA)and jiontly managed by The Conference Board of Canada(CBOC)and the International Trade Research Institute in China.It is jointly implemented by the Institute ofEconomic Research of the Chinese State Planning Commission and the North—South Institute of Canada。 展开更多
关键词 An outline of the analysis report on the impacts of China’s economic reform on women employment Policy towards Gender Equality in Employment in a Globalizing economy
下载PDF
粗穗披碱草1H^(t)S染色体特异荧光原位杂交标记开发
7
作者 宫文萍 汪晓璐 +6 位作者 王开 韩冉 祁广 徐文竞 曾小雪 郭军 刘成 《山东农业科学》 北大核心 2024年第7期16-22,共7页
小麦-粗穗披碱草1H^(t)S.1BL罗伯逊易位系高抗小麦条锈病和叶锈病,是小麦遗传改良的优异基因源。我们前期利用中国春ph1b基因突变体对该易位系进行诱导,获得了一批诱导后代材料,为了从中准确鉴定小麦-粗穗披碱草1H^(t)S小片段易位系,需... 小麦-粗穗披碱草1H^(t)S.1BL罗伯逊易位系高抗小麦条锈病和叶锈病,是小麦遗传改良的优异基因源。我们前期利用中国春ph1b基因突变体对该易位系进行诱导,获得了一批诱导后代材料,为了从中准确鉴定小麦-粗穗披碱草1H^(t)S小片段易位系,需要建立能够覆盖粗穗披碱草1H^(t)S染色体的荧光原位杂交(FISH)标记。本研究利用21个小麦及其近缘种探针、61个基于中国春基因组序列新开发的小麦1BS染色体探针以及40个根据简单三碱基重复序列新开发的探针对小麦-粗穗披碱草1H^(t)S.1BL易位系进行非变性FISH分析。结果显示,B74、B76和B77等36个探针(33个为新开发的)在1H^(t)S染色体上具有杂交信号,并且杂交信号可分为仅在染色体末端、仅在着丝粒处、同时在着丝粒处和近着丝粒处、覆盖1H^(t)S约3/4染色体臂、覆盖绝大部分1H^(t)S共五种类型。因此,部分探针单独使用或多个探针联合使用,其信号能覆盖1H^(t)S染色体,能够满足小麦-粗穗披碱草1H^(t)S小片段易位系鉴定,这可为小麦背景中粗穗披碱草染色质追踪提供新的检测手段。 展开更多
关键词 粗穗披碱草 1H^(t)s染色体 探针 荧光原位杂交标记
下载PDF
基于量子衍生涡流算法和T⁃S模糊推理模型的储层岩性识别
8
作者 赵娅 管玉 +1 位作者 李盼池 王伟 《石油地球物理勘探》 EI CSCD 北大核心 2024年第1期23-30,共8页
鉴于梯度下降法易陷入局部极值、普通群智能优化算法易早熟收敛,提出一种基于量子衍生涡流算法(Quantum Vortex Search Algorithm,QVSA)和T⁃S模糊推理模型的岩性识别方法,QVSA具有操作简单、收敛速度快、寻优能力强等优点,有助于T⁃S模... 鉴于梯度下降法易陷入局部极值、普通群智能优化算法易早熟收敛,提出一种基于量子衍生涡流算法(Quantum Vortex Search Algorithm,QVSA)和T⁃S模糊推理模型的岩性识别方法,QVSA具有操作简单、收敛速度快、寻优能力强等优点,有助于T⁃S模糊推理模型获得最优参数配置,从而实现储层岩性的准确识别。首先利用具有全局搜索能力的QVSA优化T⁃S模糊推理模型的各种参数;然后利用主成分分析方法降低获取的地震属性维度;再利用优化的T⁃S模糊推理模型识别储层岩性。实验结果表明,利用反映储层特征的8个地震属性识别储层岩性时,所提方法的识别正确率达到92%,比普通BP网络方法高5.1%,同时查准率、查全率、F1分数等指标也较BP网络方法提升明显。 展开更多
关键词 储层岩性识别 量子衍生涡流算法 ts 模糊推理模型 模糊集 地震属性
下载PDF
扩展目标跟踪Student’s t逆Wishart平滑算法
9
作者 陈辉 张丁丁 +1 位作者 连峰 韩崇昭 《电子与信息学报》 EI CAS CSCD 北大核心 2024年第8期3353-3362,共10页
脉冲干扰和离群量测信息等因素通常会导致异常的厚尾噪声,这使得以高斯假设为前提的扩展目标跟踪(ETT)估计器的性能急剧降低,针对该问题该文提出一种基于扩展目标随机矩阵模型(RMM)的Student’s t逆Wishart平滑(StIWS)算法。首先,将目... 脉冲干扰和离群量测信息等因素通常会导致异常的厚尾噪声,这使得以高斯假设为前提的扩展目标跟踪(ETT)估计器的性能急剧降低,针对该问题该文提出一种基于扩展目标随机矩阵模型(RMM)的Student’s t逆Wishart平滑(StIWS)算法。首先,将目标的运动状态以及过程噪声和量测噪声建模为Student’s t分布以表征异常噪声对扩展目标概率分布的影响,将目标扩展状态建模为服从逆Wishart分布的随机矩阵。然后,在Student’s t贝叶斯平滑框架下,详细推导了能在扩展目标的多重特征动态演变的过程中有效估计目标状态的StIWS算法。最后,通过扩展目标跟踪的仿真实验结果和真实场景实验结果验证了所提算法的有效性。 展开更多
关键词 扩展目标跟踪 students t平滑 逆Wishart分布 厚尾噪声
下载PDF
车辆主动悬架自适应变论域T-S模糊控制研究
10
作者 李韶华 季广港 +1 位作者 冯桂珍 王贺 《振动.测试与诊断》 EI CSCD 北大核心 2024年第4期733-739,828,共8页
针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊... 针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊控制器,利用神经网络的自学习特性产生完善的模糊规则,进而在传统函数型伸缩因子的基础上,将系统误差和误差变化率作为动态参数引入伸缩因子中,实现伸缩因子参数的自适应调整,解决了传统函数型伸缩因子因参数确定难度大导致控制效果差的问题。通过随机工况下的仿真分析和基于相似理论的缩尺实验,对所提出算法的有效性和工况自适应性进行了验证。结果表明,所提出的自适应变论域T-S模糊控制策略具有较强的工况适应性,在不同车速、路面激励下均可有效提高车辆的平顺性并保证轮胎接地安全性。 展开更多
关键词 主动悬架 变论域 伸缩因子 t-s模糊控制 神经模糊系统
下载PDF
Chinese and US S&T Innovation Policies and Their Effects on Economic Growth Potentials 被引量:2
11
作者 陈宝明 丁明磊 《China Economist》 2017年第4期32-47,共16页
Since the eruption of the recent global financial crisis, major countries have been pushing forward structural reforms with science and technology (S&T) innovation at the heart. Since taking office, US President Do... Since the eruption of the recent global financial crisis, major countries have been pushing forward structural reforms with science and technology (S&T) innovation at the heart. Since taking office, US President Donald Trump has adopted an "America First" strategy but has yet to specify a clear S&T innovation policy. However, Trump's current policies have already affected S&T innovation and his planned budget cuts will impact US growth potentials. Compared with the US, China is steadily implementing its innovation-driven development strategy with significant improvement in S& T innovation that increasingly supports economic growth. To spur future economic growth, China should steadfastly follow its S&T innovation strategy, promote the utilization of S&T innovation results, boost its economic growth potentials and make the most of global innovation resources. 展开更多
关键词 s&t innovation economic growth structural reforms
下载PDF
China’s Potential Economic Growths during 2015-2025 under Different Scenarios~ 被引量:1
12
作者 李平 娄峰 《China Economist》 2015年第2期82-99,共18页
China has entered a crucial period of further growth and restructuring that will last until 2025. Based on a review of the major factors affecting China's potential economic growth, this paper has created an integrat... China has entered a crucial period of further growth and restructuring that will last until 2025. Based on a review of the major factors affecting China's potential economic growth, this paper has created an integrated economic system model consisting of system dynamics, econometrics, and input-output for the forecast of China's economic size and structure by 2025. Analysis shows that prior to 2025, China will be able to maintain a potential annual economic growth rate of 5.7%-7.2%. Faced with an international environment of a possible slowdown of advanced economies and diminishing demographic dividends, China needs to further expedite its urbanization process, enhance R&D and education spending, increase total factor productivity (TFP), vigorously develop the tertiary sector, and expand consumption in order to achieve the optimistically estimated growth of 6.6%-7.4% during the period of 2015-2025. Economic growth should be accompanied by the upgrade of industry structure and improvement of investment and consumption structures. 展开更多
关键词 China's economy structural transition potential economic growth rate
下载PDF
帕金森病患者免疫球蛋白、Th9亚群水平变化及其与IGF-1、S-100B蛋白的相关性
13
作者 曹利红 张哲 傅天 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第6期1248-1252,共5页
目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根... 目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根据患者病变程度分为轻度组(35例)、中度组(44例)和重度组(29例);另选108例健康成人作为对照组。对比研究组和对照组免疫球蛋白和Th9亚群水平,以及轻度组、中度组及重度组免疫球蛋白、Th9亚群、IGF-1和S-100B蛋白水平,采用Pearson相关性分析免疫球蛋白、Th9亚群和IGF-1、S-100B蛋白的相关性。采用Spearman相关性分析PD患者疾病程度和所有差异指标间的相关性。结果:研究组IgM水平较对照组低,且重度组低于中度组,中度组低于轻度组(P<0.05);研究组IgG、IgA、IL-9和Th9亚群水平较对照组高,且重度组高于中度组,中度组高于轻度组(P<0.05)。重度组IGF-1水平低于中度组,中度组低于轻度组;重度组S-100B蛋白水平高于中度组,中度组高于轻度组(P<0.05)。Pearson相关性分析结果显示,PD患者IgM水平与IGF-1水平呈正相关,与S-100B蛋白水平呈负相关;IgG、IgA、IL-9和Th9亚群水平均与IGF-1水平呈负相关,与S-100B蛋白水平呈正相关(P<0.05)。Spearman相关性分析结果显示,PD患者疾病程度与IgM、IGF-1水平呈负相关,与S-100B蛋白、IgG、IgA、IL-9和Th9亚群水平呈正相关(P<0.05)。结论:PD患者IgM水平降低,IgG、IgA、Th9亚群水平升高,且其水平变化与IGF-1、S-100B明显相关,可以用于评估病情的严重程度。 展开更多
关键词 帕金森病 免疫球蛋白 辅助性t细胞亚群 胰岛素生长因子-1 s-100B蛋白
下载PDF
基于T-S模糊故障树的驱动电机冷却系统可靠性分析
14
作者 柳炽伟 郭美华 《客车技术与研究》 2024年第2期19-25,共7页
车用驱动电机液压冷却系统存在故障机理不确定等问题。本文应用模糊数描述其故障概率和故障程度,建立驱动电机冷却系统的T-S模糊故障树模型,计算系统模糊可能性,分析各部件的概率重要度和关键重要度,找出影响系统可靠性的关键部件。
关键词 电动汽车 驱动电机 冷却系统 t-s模糊故障树 可靠性分析
下载PDF
S-T-S混合式循环互助教学模式用于少学时“化工原理”课程
15
作者 吕玲 《教育教学论坛》 2024年第31期157-160,共4页
“化工原理”课程是化工及相关专业的专业基础课程,相关专业的学时少,课程难,需重点解决的问题是“三多”“三不愿”“三不明”。针对痛点问题,提出了线上线下混合式循环互助的创新设计思路,包括:教师帮助学生自制课前、课中、课后习题... “化工原理”课程是化工及相关专业的专业基础课程,相关专业的学时少,课程难,需重点解决的问题是“三多”“三不愿”“三不明”。针对痛点问题,提出了线上线下混合式循环互助的创新设计思路,包括:教师帮助学生自制课前、课中、课后习题,学生帮助教师反馈真实学习情况,学生帮助学生组团互助学习。问卷调查和评教结果显示,在一定程度上解决了“三多”“三不愿”的问题;通过建立“助教团队”反馈不同层次学生的学习情况,较好地解决了“三不明”的问题。学生的成绩与教改前相比有明显提高。 展开更多
关键词 线上线下 s-t-s教学模式 化工原理 痛点问题
下载PDF
混合差分和多种群粒子群算法的T-S模糊模型辨识
16
作者 林国汉 陈壮 《湖南工程学院学报(自然科学版)》 2024年第2期1-6,30,共7页
为提高T-S模型的辨识精度,针对基本粒子群优化(particle swarm optimization,PSO)算法T-S模型全局优化辨识问题,提出混合差分和多种群粒子群算法的T-S模糊模型辨识方法,将T-S模型前件参数和后件参数整体编码进行全局优化辨识.为避免基... 为提高T-S模型的辨识精度,针对基本粒子群优化(particle swarm optimization,PSO)算法T-S模型全局优化辨识问题,提出混合差分和多种群粒子群算法的T-S模糊模型辨识方法,将T-S模型前件参数和后件参数整体编码进行全局优化辨识.为避免基本粒子群的早熟收敛和后期收敛速度慢的缺陷对T-S模型辨识精度和速度的影响,算法将种群分为若干个子群,每个子群根据粒子适应度值自适应调整惯性权重,平衡了算法的开发和探索能力,对子群最优粒子,进行差分操作以增强算法的全局搜索能力,采用全局最优粒子替代随机子群的最优粒子以加强子群间的信息交流,维持粒子多样性.典型非线性系统和混沌系统的仿真结果表明,采用混合差分和多种群粒子群算法辨识的T-S模型具有更高的辨识精度. 展开更多
关键词 t-s模糊系统 粒子群优化 差分进化 多种群
下载PDF
整体性视域下雷蒙·威廉斯的T.S.艾略特戏剧评论
17
作者 张乾坤 《湖南科技学院学报》 2024年第4期53-58,共6页
威廉斯的T.S.艾略特戏剧批评是西方马克思主义戏剧批评史上的经典案例之一。他从整体形式与整体行动的角度切入,前者考察T.S.艾略特文本中的诸要素是否进行了整体把握,是否为经验交流提供了惯例;后者讨论究竟如何理解T.S.艾略特的戏剧,... 威廉斯的T.S.艾略特戏剧批评是西方马克思主义戏剧批评史上的经典案例之一。他从整体形式与整体行动的角度切入,前者考察T.S.艾略特文本中的诸要素是否进行了整体把握,是否为经验交流提供了惯例;后者讨论究竟如何理解T.S.艾略特的戏剧,认为它的核心不是个体的死亡,而是集体对现状的默认与妥协。两种批评的角度虽然存在明显的差异,但共同之处是反复强调整体性。威廉斯的整体性批评视域的形成除了根植于深厚的马克思主义批评传统之外,还受到了T.S.艾略特的伊丽莎白时期戏剧批评、F.R.利维斯的小说与诗歌批评的直接影响。整体性批评视域及其文本实践隐含着激进的政治立场。 展开更多
关键词 t.s.艾略特 戏剧批评 整体形式 整体行动 整体性批评视域
下载PDF
政府科技资助能够提高企业的R&D投入吗?——读Empirical Development Economics
18
作者 何彬 范硕 《公共管理评论》 CSSCI 2018年第2期117-128,共12页
科技创新是一个国家提高生产力和综合国力的重要支撑。中国在创新型国家建设的道路上,如何不断提高企业R&D投入是一个极为重要的问题。是否能够利用政府科技资助提高企业R&D投入?关于这个问题的解答,对于今后中国调整安排政府... 科技创新是一个国家提高生产力和综合国力的重要支撑。中国在创新型国家建设的道路上,如何不断提高企业R&D投入是一个极为重要的问题。是否能够利用政府科技资助提高企业R&D投入?关于这个问题的解答,对于今后中国调整安排政府科技资助的方向、结构、模式都具有重要的意义。学术界广泛利用各种层面的数据(截面数据、时序数据、面板数据)进行研究,获得了丰富的成果。但是目前还没有得到一致的研究结论。随着可资利用的中国宏观高频数据和企业微观数据的日益增多,进一步从时频的角度分析政府科技资助对企业R&D投入的影响是一个具有潜力的研究方向。另外学术界还应该广泛利用微观计量分析工具对政府科技资助与企业R&D投入的因果影响特征进行稳健、有效的检验。 展开更多
关键词 政府科技资助 企业R&D投入 经验研究方法
下载PDF
Correlative factors of poor prognosis and abnormal cellular immune function in patients with Alzheimer’s disease 被引量:2
19
作者 Hua Bai Hong-Mei Zeng +2 位作者 Qi-Fang Zhang Yue-Zhi Hu Fei-Fei Deng 《World Journal of Clinical Cases》 SCIE 2024年第6期1063-1075,共13页
BACKGROUND Alzheimer’s disease(AD)is a serious disease causing human dementia and social problems.The quality of life and prognosis of AD patients have attracted much attention.The role of chronic immune inflammation... BACKGROUND Alzheimer’s disease(AD)is a serious disease causing human dementia and social problems.The quality of life and prognosis of AD patients have attracted much attention.The role of chronic immune inflammation in the pathogenesis of AD is becoming more and more important.AIM To study the relationship among cognitive dysfunction,abnormal cellular immune function,neuroimaging results and poor prognostic factors in patients.METHODS A retrospective analysis of 62 hospitalized patients clinical diagnosed with AD who were admitted to our hospital from November 2015 to November 2020.Collect cognitive dysfunction performance characteristics,laboratory test data and neuroimaging data from medical records within 24 h of admission,including Mini Mental State Examination Scale score,drawing clock test,blood T lymphocyte subsets,and neutrophils and lymphocyte ratio(NLR),disturbance of consciousness,extrapyramidal symptoms,electroencephalogram(EEG)and head nucleus magnetic spectroscopy(MRS)and other data.Multivariate logistic regression analysis was used to determine independent prog-nostic factors.the modified Rankin scale(mRS)was used to determine whether the prognosis was good.The correlation between drug treatment and prognostic mRS score was tested by the rank sum test.RESULTS Univariate analysis showed that abnormal cellular immune function,extrapyramidal symptoms,obvious disturbance of consciousness,abnormal EEG,increased NLR,abnormal MRS,and complicated pneumonia were related to the poor prognosis of AD patients.Multivariate logistic regression analysis showed that the decrease in the proportion of T lym-phocytes in the blood after abnormal cellular immune function(odd ratio:2.078,95%confidence interval:1.156-3.986,P<0.05)was an independent risk factor for predicting the poor prognosis of AD.The number of days of donepezil treatment to improve cognitive function was negatively correlated with mRS score(r=0.578,P<0.05).CONCLUSION The decrease in the proportion of T lymphocytes may have predictive value for the poor prognosis of AD.It is recommended that the proportion of T lymphocytes<55%is used as the cut-off threshold for predicting the poor prog-nosis of AD.The early and continuous drug treatment is associated with a good prognosis. 展开更多
关键词 Alzheimer’s disease Cellular immunity PROGNOsIs t lymphocytes Magnetic resonance spectroscopy
下载PDF
基于T-S模糊逻辑的混合储能孤岛直流微电网功率分配控制
20
作者 张伟杰 顾吉鹏 +3 位作者 张有兵 杨晓东 娄伟 汪斌杰 《电力自动化设备》 EI CSCD 北大核心 2024年第6期135-144,共10页
在含混合储能的直流微电网中,传统阻容下垂控制无法解决由线路电阻和负荷功率波动导致的系统功率分配失衡问题。为此,提出一种基于Takagi-Sugeno(T-S)模糊逻辑的自适应阻容下垂控制方法以实现混合储能的分频分配。根据蓄电池和超级电容... 在含混合储能的直流微电网中,传统阻容下垂控制无法解决由线路电阻和负荷功率波动导致的系统功率分配失衡问题。为此,提出一种基于Takagi-Sugeno(T-S)模糊逻辑的自适应阻容下垂控制方法以实现混合储能的分频分配。根据蓄电池和超级电容的物理特性,建立单个蓄电池支路输出电压、蓄电池组间输出功率差额和阻性下垂系数之间的T-S模糊逻辑关系,以及单个超级电容支路输出功率及其变化率、超级电容组间功率差额和容性下垂系数之间的T-S模糊逻辑关系,并由此构建基于T-S模糊逻辑的阻容下垂控制器。推导含混合储能的直流微电网中各部分的平均阻抗模型,并采用阻抗比分析法对微电网的小信号稳定性进行研究。MATLAB/Simulink仿真结果表明,基于T-S模糊逻辑的阻容下垂控制可保证在线路电阻和负荷功率波动情况下系统功率的合理分配。 展开更多
关键词 直流微电网 混合储能 t-s模糊逻辑 功率分配 稳定性分析
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部