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A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI
《结构与土木工程前沿(英文)》 2018年 第12卷 第1期 页码 3-15 doi: 10.1007/s11709-017-0418-6
关键词: RC wall hysteretic measures RC wall design parameters empirical relations numerical simulations RC rectangular wall plastic hinge
Dynamic characteristics and improved MPPT control of PV generator
Houda BRAHMI, Rachid DHIFAOUI
《能源前沿(英文)》 2013年 第7卷 第3期 页码 342-350 doi: 10.1007/s11708-013-0242-1
关键词: modeling of photovoltaic (PV) generator maximum power point tracking (MPPT) estimation parameters real time controller
基于机器学习算法的模型参数区域化方法在无测站流域径流模拟中的应用 Article
吴厚发, 张建云, 鲍振鑫, 王国庆, 王文圣, 杨艳青, 王婕
《工程(英文)》 2023年 第28卷 第9期 页码 93-104 doi: 10.1016/j.eng.2021.12.014
模型参数估计是无测站流域径流模拟中需要解决的关键问题。参数区域化是应用最广泛的方法,但模型参数与流域特征间的非线性关系是参数区域化的主要障碍。本文以黄淮海流域内38个小流域为研究对象,进行了径流模拟研究,纳什效率系数(NSE)、决定系数(R2)和百分比偏差(PBIAS)的统计结果表明SWAT模型在各流域径流模拟中具有良好的性能。利用与气候、土壤、植被和地形相关的9个指标来表示与水文过程相关的流域特征。采用6种回归模型分析SWAT模型参数与流域特征之间的定量关系,包括:线性回归方程(LR)、支持向量回归(SVR)、随机森林(RF)、K近邻(kNN)、决策树(DT)和径向基函数(RBF)。首先,将38个流域依次假定为无测站流域。然后,利用其余37个供体流域构建拟合参数的回归模型,估算目标流域的模型参数,进行径流模拟。此外,本文也将基于相似性的区域化方法与基于回归分析的方法进行了对比。结果表明:基于支持向量回归(SVR)的区域化方法估计模型参数时径流模拟精度高。与传统的线性回归方法相比,机器学习算法处理非线性关系的能力突出,因而提高了无测站流域径流模拟的精度。不同区域化方法在湿润地区的表现比较接近,而机器学习算法的优势在干旱区更为明显。当研究区内含有嵌套流域时,由于流域密度高、空间距离短,此时采用基于相似性的区域化方法最好。研究结论可为无测站流域的洪水预报和水资源规划提高参考。
L. RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY
《能源前沿(英文)》 2012年 第6卷 第1期 页码 47-56 doi: 10.1007/s11708-011-0159-5
关键词: artificial intelligence power distribution control state estimation
Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of
Ye GAO, Wei SUN
《机械工程前沿(英文)》 2019年 第14卷 第3期 页码 358-368 doi: 10.1007/s11465-019-0539-9
关键词: inverse identification pipeline hoop frequency response function mechanical parameters preload
An operating state estimation model for integrated energy systems based on distributed solution
Dengji ZHOU, Shixi MA, Dawen HUANG, Huisheng ZHANG, Shilie WENG
《能源前沿(英文)》 2020年 第14卷 第4期 页码 801-816 doi: 10.1007/s11708-020-0687-y
关键词: integrated energy system state estimation electricity-gas coupling energy system nonlinear coupling distributed solution
Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using
《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1478-3
The Large scale Urban Consumption of energ Y model was updated and coupled with WRF.
关键词: Anthropogenic heat emissions LUCY High-resolution Meteorological parameters Air quality
Bayes estimation of residual life by fusing multisource information
Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO
《工程管理前沿(英文)》 2018年 第5卷 第4期 页码 524-532 doi: 10.15302/J-FEM-2018034
Residual life estimation is essential for reliability engineering. Traditional methods may experience difficulties in estimating the residual life of products with high reliability, long life, and small sample. The Bayes model provides a feasible solution and can be a useful tool for fusing multisource information. In this study, a Bayes model is proposed to estimate the residual life of products by fusing expert knowledge, degradation data, and lifetime data. The linear Wiener process is used to model degradation data, whereas lifetime data are described via the inverse Gaussian distribution. Therefore, the joint maximum likelihood (ML) function can be obtained by combining lifetime and degradation data. Expert knowledge is used according to the maximum entropy method to determine the prior distributions of parameters, thereby making this work different from existing studies that use non-informative prior. The discussion and analysis of different types of expert knowledge also distinguish our research from others. Expert knowledge can be classified into three categories according to practical engineering. Methods for determining prior distribution by using the aforementioned three types of data are presented. The Markov chain Monte Carlo is applied to obtain samples of the parameters and to estimate the residual life of products due to the complexity of the joint ML function and the posterior distribution of parameters. Finally, a numerical example is presented. The effectiveness and practicability of the proposed method are validated by comparing it with residual life estimation that uses non-informative prior. Then, its accuracy and correctness are proven via simulation experiments.
关键词: residual life estimation Bayes model linear Wiener process
Jiangbo WANG, Zhong XIN
《化学科学与工程前沿(英文)》 2009年 第3卷 第2期 页码 167-171 doi: 10.1007/s11705-009-0006-y
关键词: polycarbonate polymethylphenylsilsesquioxane thermal degradation kinetics activation energy lifetime
Effect of thermodynamic parameters on the performance of refrigerator-ejector
Lihong CAO, Yicai LIU, Chao WAN, Tianlong XIN, Qian HUANG, Mingyan ZHANG
《能源前沿(英文)》 2010年 第4卷 第4期 页码 517-521 doi: 10.1007/s11708-010-0004-2
关键词: refrigerator-ejector FLUENT thermodynamic parameters entrainment ratio performance
Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator
Xueping PAN, Ping JU, Feng WU, Yuqing JIN
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 367-376 doi: 10.1007/s11465-017-0429-y
A new hierarchical parameter estimation method for doubly fed induction generator (DFIG) and drive train system in a wind turbine generator (WTG) is proposed in this paper. Firstly, the parameters of the DFIG and the drive train are estimated locally under different types of disturbances. Secondly, a coordination estimation method is further applied to identify the parameters of the DFIG and the drive train simultaneously with the purpose of attaining the global optimal estimation results. The main benefit of the proposed scheme is the improved estimation accuracy. Estimation results confirm the applicability of the proposed estimation technique.
关键词: wind turbine generator DFIG drive train system hierarchical parameter estimation method trajectory sensitivity technique
Effects of critical geometric parameters on the optical performance of a conical cavity receiver
Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ
《能源前沿(英文)》 2019年 第13卷 第4期 页码 673-683 doi: 10.1007/s11708-019-0630-2
关键词: parabolic collector conical cavity receiver critical geometric parameters optical performance
Effect of preparation parameters on catalytic properties of Pt/graphite
LIU Zhengqian, MA Jun, ZHAO Lei
《环境科学与工程前沿(英文)》 2007年 第1卷 第4期 页码 482-487 doi: 10.1007/s11783-007-0077-2
An energy consumption prediction approach of die casting machines driven by product parameters
《机械工程前沿(英文)》 2021年 第16卷 第4期 页码 868-886 doi: 10.1007/s11465-021-0656-0
关键词: die casting machine energy consumption prediction product parameters
The influence of manufacturing parameters and adding support layer on the properties of Zirfon
Li XU,Yue YU,Wei LI,Yan YOU,Wei XU,Shaoxing ZHANG
《化学科学与工程前沿(英文)》 2014年 第8卷 第3期 页码 295-305 doi: 10.1007/s11705-014-1433-y
关键词: separator alkaline water electrolysis manufacturing parameters support layer
标题 作者 时间 类型 操作
Estimation of relations among hysteretic response measures and design parameters for RC rectangular shear
A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI
期刊论文
Dynamic characteristics and improved MPPT control of PV generator
Houda BRAHMI, Rachid DHIFAOUI
期刊论文
Intelligent algorithm for optimal meter placement and bus voltage estimation in ring main distribution
L. RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY
期刊论文
Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of
Ye GAO, Wei SUN
期刊论文
An operating state estimation model for integrated energy systems based on distributed solution
Dengji ZHOU, Shixi MA, Dawen HUANG, Huisheng ZHANG, Shilie WENG
期刊论文
Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using
期刊论文
Bayes estimation of residual life by fusing multisource information
Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO
期刊论文
Thermal degradation kinetics and lifetime estimation for polycarbonate/polymethylphenylsilsesquioxane
Jiangbo WANG, Zhong XIN
期刊论文
Effect of thermodynamic parameters on the performance of refrigerator-ejector
Lihong CAO, Yicai LIU, Chao WAN, Tianlong XIN, Qian HUANG, Mingyan ZHANG
期刊论文
Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator
Xueping PAN, Ping JU, Feng WU, Yuqing JIN
期刊论文
Effects of critical geometric parameters on the optical performance of a conical cavity receiver
Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ
期刊论文
Effect of preparation parameters on catalytic properties of Pt/graphite
LIU Zhengqian, MA Jun, ZHAO Lei
期刊论文