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Min-Ho CHEY, Jae-Ung KIM
《结构与土木工程前沿(英文)》 2012年 第6卷 第3期 页码 267-280 doi: 10.1007/s11709-012-0170-x
关键词: tuned mass damper parametric optimization passive control white noise earthquake excitation
Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 377-388 doi: 10.1007/s11465-017-0431-4
Power maximization has always been a practical consideration in wind turbines. The question of how to address optimal power capture, especially when the system dynamics are nonlinear and the actuators are subject to unknown faults, is significant. This paper studies the control methodology for variable-speed variable-pitch wind turbines including the effects of uncertain nonlinear dynamics, system fault uncertainties, and unknown external disturbances. The nonlinear model of the wind turbine is presented, and the problem of maximizing extracted energy is formulated by designing the optimal desired states. With the known system, a model-based nonlinear controller is designed; then, to handle uncertainties, the unknown nonlinearities of the wind turbine are estimated by utilizing radial basis function neural networks. The adaptive neural fault tolerant control is designed passively to be robust on model uncertainties, disturbances including wind speed and model noises, and completely unknown actuator faults including generator torque and pitch actuator torque. The Lyapunov direct method is employed to prove that the closed-loop system is uniformly bounded. Simulation studies are performed to verify the effectiveness of the proposed method.
关键词: wind turbine nonlinear model maximum power tracking passive fault tolerant control adaptive neural control
从大连输油管爆炸反思油气设备驱动方式——非能动控制驱动对油气储运的特殊意义
曾祥炜,陈崑,邱小平,曾小舸,向北平,臧红彬,石磊,龚伟
《中国工程科学》 2010年 第12卷 第9期 页码 34-38
通过分析大连输油管爆炸,对当今国内外油气储运设备驱动方式进行反思。提出非能动控制原理和方法,阐述非能动控制梭式核心元件的结构和原理;对非能动梭式控制管道爆破保护系统、巨型油罐梭式消防止回阀进行分析,得出非能动控制驱动对油气储运具有特殊意义。
《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1494-3
• A Passive Aeration Ditch was developed to treat decentralized wastewater.
关键词: Decentralized wastewater Passive aeration ditch Biofilm formation C/N ratio Salinity Model simulation
《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1731-z
● A 2D finite-element solute transport model, PRB-Trans, is developed.
关键词: Passive convergence-permeable reactive barrier Numerical modeling Hydraulic behavior assessment Pollutant treatment performance evaluation Influential factors analysis
Recent developments in passive interconnected vehicle suspension
Wade A. SMITH, Nong ZHANG,
《机械工程前沿(英文)》 2010年 第5卷 第1期 页码 1-18 doi: 10.1007/s11465-009-0092-z
关键词: interconnected suspensions rollover prevention vehicle dynamics ride comfort multibody system dynamics hydraulic system dynamics
Moving target detection in the cepstrum domain for passive coherent location (PCL) radar
Ji-chuan LI,Xiao-de LU,Hui ZHANG,Peng-cheng YANG,Yu LIU,Mao-sheng XIANG
《信息与电子工程前沿(英文)》 2015年 第16卷 第9期 页码 785-795 doi: 10.1631/FITEE.1500036
关键词: Moving target detection Cepstrum techniques Cross ambiguity function (CAF) Passive coherent location (PCL) radar
A state-of-the-art review of solar passive building system for heating or cooling purpose
Arun Kumar NANDA,C K PANIGRAHI
《能源前沿(英文)》 2016年 第10卷 第3期 页码 347-354 doi: 10.1007/s11708-016-0403-0
关键词: HVAC heating cooling solar heating carbon dioxide (CO2) emissions
邓新蒲
《中国工程科学》 2007年 第9卷 第11期 页码 54-62
可观测性分析是单观测器无源定位首先要研究的问题,只有当目标状态 (位置、速度等)是完全可观测的,定位和跟踪问题才能有可靠的、唯一的解。从几何方法、代数方程方法、线性系统方法3方面来阐述单站测角无源定位的状态可观性问题,讨论测频单站无源定位问题的可观测性和定量的可观测性,并对近年来这一领域的相关文献的分析方法和结论进行评述。
Zhimin QIU, Daogang LU, Jingpin FU, Li FENG, Yuhao ZHANG
《能源前沿(英文)》 2021年 第15卷 第4期 页码 860-871 doi: 10.1007/s11708-021-0744-1
关键词: passive residual heat removal heat exchanger (PRHR HX) C-shape tube revised heat transfer correlations coupled natural convection
Evaluation of transmissibility for a class of nonlinear passive vibration isolators
Z. K. PENG, Z. Q. LANG, G. MENG
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 401-409 doi: 10.1007/s11465-012-0349-9
In this study, the concept of Output Frequency Response Functions (OFRFs) is applied to represent the transmissibility of nonlinear isolators in frequency domain. With the OFRFs estimated from numerical simulation responses, an explicit analytical relationship between the transmissibility and the nonlinear characteristic parameters is derived for a wide class of nonlinear isolators that have nonlinear anti-symmetric damping characteristics and a comprehensive pattern about how the nonlinear damping characteristic parameters might affect the force and displacement transmissibility is built for the vibration isolators. The results reveal that it is reasonable to analyze the force and displacement transmissibility of the nonlinear isolators by simply investigating the fundamental harmonic components of the force and displacement outputs of the nonlinear isolators, and the introduction of a nonlinear anti-symmetric damping into vibration isolators can significantly suppress both the force and displacement transmissibility over the resonant frequency region, but has almost no effect on the transmissibility at non-resonant regions. These conclusions are of significant importance in the analysis and design of the nonlinear vibration isolators with nonlinear anti-symmetric damping.
关键词: nonlinear vibration volterra series Output Frequency Response Functions (OFRFs) nonlinear damping vibration isolator
《环境科学与工程前沿(英文)》 2022年 第16卷 第12期 doi: 10.1007/s11783-022-1591-y
● A novel PRB configuration based on passive convergent flow effect was proposed.
关键词: Passive convergence-permeable reactive barrier (PC-PRB) Permeable reactive barrier configuration Numerical simulation Hydraulic performance evaluation Sensitivity analysis
Coulomb-type solutions for passive earth pressure with steady seepage
WANG Junjie, CHAI Hejun, LIN Xin, XU Jiamei
《结构与土木工程前沿(英文)》 2008年 第2卷 第1期 页码 56-66 doi: 10.1007/s11709-008-0001-2
关键词: function coefficient Coulomb-type effective friction different drainage
Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism
Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO
《机械工程前沿(英文)》 2021年 第16卷 第1期 页码 32-45 doi: 10.1007/s11465-020-0604-4
关键词: variable stiffness mechanism stiffness self-regulation bionic robot modeling
标题 作者 时间 类型 操作
Parametric control of structural responses using an optimal passive tuned mass damper under stationary
Min-Ho CHEY, Jae-Ung KIM
期刊论文
Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural faulttolerant control
Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD
期刊论文
Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD
期刊论文
Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB
期刊论文
Moving target detection in the cepstrum domain for passive coherent location (PCL) radar
Ji-chuan LI,Xiao-de LU,Hui ZHANG,Peng-cheng YANG,Yu LIU,Mao-sheng XIANG
期刊论文
A state-of-the-art review of solar passive building system for heating or cooling purpose
Arun Kumar NANDA,C K PANIGRAHI
期刊论文
study of primary and secondary side coupling natural convection heat transfer characteristics of the passive
Zhimin QIU, Daogang LU, Jingpin FU, Li FENG, Yuhao ZHANG
期刊论文
Evaluation of transmissibility for a class of nonlinear passive vibration isolators
Z. K. PENG, Z. Q. LANG, G. MENG
期刊论文
Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic
期刊论文
Coulomb-type solutions for passive earth pressure with steady seepage
WANG Junjie, CHAI Hejun, LIN Xin, XU Jiamei
期刊论文