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Human power-based energy harvesting strategies for mobile electronic devices
Dewei JIA, Jing LIU
《能源前沿(英文)》 2009年 第3卷 第1期 页码 27-46 doi: 10.1007/s11708-009-0002-4
关键词: mobile electronic device human power energy harvesting micro/miniaturized generator battery green energy
A new miniaturized engine based on thermomagnetic effect of magnetic fluids
Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN
《能源前沿(英文)》 2009年 第3卷 第2期 页码 160-166 doi: 10.1007/s11708-009-0018-9
Noise control technology for generator sets in enclosures
ZHANG Nailong, YANG Wentong, FEI Renyuan
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 377-384 doi: 10.1007/s11465-008-0051-0
关键词: equipment generator sound-attenuated enclosure convenient Enclosure development
《能源前沿(英文)》 doi: 10.1007/s11708-024-0930-z
关键词: fibrous hydroelectric generator sodium alginate (SA) graphene oxide (GO) power generation
Performance prediction of switched reluctance generator with time average and small signal models
Jyoti KOUJALAGI, B. UMAMAHESWARI, R. ARUMUGAM
《能源前沿(英文)》 2013年 第7卷 第1期 页码 56-68 doi: 10.1007/s11708-012-0216-8
关键词: generator reluctance switching model small signal model time average model
Flexible micro flow sensor for micro aerial vehicles
Rong ZHU, Ruiyi QUE, Peng LIU
《机械工程前沿(英文)》 2017年 第12卷 第4期 页码 539-545 doi: 10.1007/s11465-017-0427-0
This article summarizes our studies on micro flow sensors fabricated on a flexible polyimide circuit board by a low-cost hybrid process of thin-film deposition and circuit printing. The micro flow sensor has merits of flexibility, structural simplicity, easy integrability with circuits, and good sensing performance. The sensor, which adheres to an object surface, can detect the surface flow around the object. In our study, we install the fabricated micro flow sensors on micro aerial vehicles (MAVs) to detect the surface flow variation around the aircraft wing and deduce the aerodynamic parameters of the MAVs in flight. Wind tunnel experiments using the sensors integrated with the MAVs are also conducted.
关键词: micro flow sensor flexible sensor surface flow sensing aerodynamic parameter micro aerial vehicle (MAV)
Weak characteristic information extraction from early fault of wind turbine generator gearbox
Xiaoli XU, Xiuli LIU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 357-366 doi: 10.1007/s11465-017-0423-4
Given the weak early degradation characteristic information during early fault evolution in gearbox of wind turbine generator, traditional singular value decomposition (SVD)-based denoising may result in loss of useful information. A weak characteristic information extraction based on µ-SVD and local mean decomposition (LMD) is developed to address this problem. The basic principle of the method is as follows: Determine the denoising order based on cumulative contribution rate, perform signal reconstruction, extract and subject the noisy part of signal to LMD and µ-SVD denoising, and obtain denoised signal through superposition. Experimental results show that this method can significantly weaken signal noise, effectively extract the weak characteristic information of early fault, and facilitate the early fault warning and dynamic predictive maintenance.
关键词: wind turbine generator gearbox µ-singular value decomposition local mean decomposition weak characteristic information extraction early fault warning
XIE Danmei, ZHANG Hengliang, DONG Chuan, LIU Zhanhui, YANG Changzhu
《能源前沿(英文)》 2007年 第1卷 第4期 页码 483-486 doi: 10.1007/s11708-007-0072-4
Jadav Chandra DAS,Debashis DE
《信息与电子工程前沿(英文)》 2016年 第17卷 第3期 页码 224-236 doi: 10.1631/FITEE.1500079
关键词: Quantum-dot cellular automata (QCA) Parity generator Parity checker Feynman gate Nanocommunication Power dissipation
基于金纳米/介孔氧化镍/泡沫镍纳米复合材料的微型电极用于地下水重金属检测 Article
薛博元, 杨倩, 夏楷东, 李志宏, 陈宇徽, 张大奕, 周小红
《工程(英文)》 2023年 第27卷 第8期 页码 199-208 doi: 10.1016/j.eng.2022.06.005
Pb2+和Cu2+等重金属是地下水中持久性污染物之一。对这些金属进行频繁监测需要高效、灵敏、经济、可靠的方法。文中提出了一种基于纳米复合材料的微型电极,利用方波伏安电化学分析技术同时检测Pb2+和Cu2+。文中还提出一种简便的原位水热煅烧法,无需黏合剂即可直接在三维泡沫镍上生长介孔氧化镍,然后用电化学方法在泡沫镍中嵌入金纳米颗粒(AuNP)。介孔氧化镍和AuNP之间低势垒欧姆接触的精心设计,有助于介孔氧化镍内靶标介导的纳米通道限域电子转移。因此,该方法可以同时准确测定重金属Pb2+(检测限为0.020 mg·L−1,检测范围为2.0~16.0 mg·L−1)和Cu2+(检测限为0.013 mg·L−1,检测范围为0.4~12.8 mg·L−1)。此外,地下水中的其他重金属离子和常见干扰离子对电极性能的影响微乎其微,地下水样品加标回收率在96.3% ± 2.1%和109.4% ± 0.6%之间。此电极结构紧凑、形状灵活、功耗低,而且可以远程操作,这为现场检测地下水中的重金属开辟了新的技术路径,进而展示了在环境监测领域进行革新的潜力。
Design and modeling of a free-piston engine generator
《能源前沿(英文)》 2023年 第17卷 第6期 页码 811-821 doi: 10.1007/s11708-022-0848-2
关键词: free-piston engine generator linear permanent magnet synchronous machine system design numerical model finite element method
A space power system of free piston Stirling generator based on potassium heat pipe
Mingqiang LIN, Jian MOU, Chunyun CHI, Guotong HONG, Panhe GE, Gu HU
《能源前沿(英文)》 2020年 第14卷 第1期 页码 1-10 doi: 10.1007/s11708-019-0655-6
关键词: free piston Stirling generator (FPSG) potassium heat pipe power system energy conversion
Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer
Lili CHEN, Wu ZHOU
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 146-149 doi: 10.1007/s11465-013-0260-z
To predict more precisely the frequency of force-balanced micro accelerometer with different bias voltages, the effects of bias voltages on error sensitivity of frequency is studied. The resonance frequency of accelerometer under closed loop control is derived according to its operation principle, and its error sensitivity is derived and analyzed under over etching structure according to the characteristics of Deep Reaction Ion Etching (DRIE). Based on the theoretical results, micro accelerometer is fabricated and tested to study the influences of AC bias voltage and DC bias voltage on sensitivity, respectively. Experimental results indicate that the relative errors between test data and theory data are less than 7%, and the fluctuating value of error sensitivity under the range of voltage adjustment is less than 0.01 μm . It is concluded that the error sensitivity with designed parameters of structure, circuit and process error can be used to predict the frequency of accelerometer with no need to consider the influence of bias voltage.
关键词: Micro-Electro-Mechanical Systems (MEMS) micro accelerometer force-balanced micro accelerometer frequency error sensitivity
Zekun LIU, Shuang YUAN, Yi YUAN, Guojian LI, Qiang WANG
《能源前沿(英文)》 2021年 第15卷 第2期 页码 358-366 doi: 10.1007/s11708-020-0712-1
关键词: photovoltaic (PV) thermoelectric generator conversion efficiency hybrid energy systems water-cooled plate (WCP)
Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy
Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR
《能源前沿(英文)》 2016年 第10卷 第2期 页码 155-163 doi: 10.1007/s11708-016-0410-1
关键词: wind turbine permanent magnet synchronous generator (PMSG) converter proportional-integral (PI) control direct control of the torque (DTC) regulation
标题 作者 时间 类型 操作
Human power-based energy harvesting strategies for mobile electronic devices
Dewei JIA, Jing LIU
期刊论文
A new miniaturized engine based on thermomagnetic effect of magnetic fluids
Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN
期刊论文
Noise control technology for generator sets in enclosures
ZHANG Nailong, YANG Wentong, FEI Renyuan
期刊论文
A fibrous hydroelectric generator derived from eco-friendly sodium alginate for low-grade energy harvesting
期刊论文
Performance prediction of switched reluctance generator with time average and small signal models
Jyoti KOUJALAGI, B. UMAMAHESWARI, R. ARUMUGAM
期刊论文
Weak characteristic information extraction from early fault of wind turbine generator gearbox
Xiaoli XU, Xiuli LIU
期刊论文
Sensitivity analysis of torsional vibration behavior of the shafting of a turbo generator set to changes
XIE Danmei, ZHANG Hengliang, DONG Chuan, LIU Zhanhui, YANG Changzhu
期刊论文
Quantum-dot cellular automata based reversible low power parity generator and parity checker design for
Jadav Chandra DAS,Debashis DE
期刊论文
A space power system of free piston Stirling generator based on potassium heat pipe
Mingqiang LIN, Jian MOU, Chunyun CHI, Guotong HONG, Panhe GE, Gu HU
期刊论文
Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer
Lili CHEN, Wu ZHOU
期刊论文
A thermoelectric generator and water-cooling assisted high conversion efficiency polycrystalline silicon
Zekun LIU, Shuang YUAN, Yi YUAN, Guojian LI, Qiang WANG
期刊论文