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关键词

Cuk矩阵变换器 1

Matlab/Simulink仿真 1

PCB缺陷检测 1

仿真 1

优化 1

分数阶微积分；分忆抗；分忆抗值；分数阶忆阻；分数阶记忆性突触 1

动模实验 1

单边直线感应电机 1

参数测量 1

双闭环控制 1

可靠性指标 1

可靠性验证试验方案 1

同步；电压耦合；混沌电路；电容器耦合 1

哈密顿能量；耦合同步；突触增强；神经元电路 1

图像对准 1

基尔霍夫型电路 1

复杂网络；等效变换；非线性差分方程；等效电阻 1

外部短路 1

多智能体系统；非脆弱采样数据控制；时变延迟；线性矩阵不等式；渐近同步 1

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用于无线供电物联网感知的电小尺寸惠更斯整流天线综述 Review

蔺炜, Richard W. Ziolkowski

《工程（英文）》 2022年第11卷第4期页码 42-59 doi: 10.1016/j.eng.2021.08.025

摘要：

远场无线电力传输（WPT）是一项重大突破性技术，它将支持许多预期中泛在的物联网（IoT）应用，而这些应用与第五代（5G）、第六代（6G）及以上无线生态系统相关。整流天线是整流电路和天线的组合，是远场WPT系统中最关键的组件。然而，紧凑型应用设备需要更小的集成整流天线，这些天线要同时具有大的电磁波捕获能力、高交流（AC）到直流（DC）转换效率，及促进多功能无线性能的作用。本文综述了各种整流天线的小型化技术，如曲折平面倒F天线（PIFA）整流天线、小型化的基于单极和偶极的整流天线、分形环和贴片整流天线、介质负载整流天线和电小尺寸近场谐振寄生整流天线。文中总结了它们的性能特征，并与我们之前开发的被证明更适合IoT 应用的电小尺寸惠更斯整流天线进行比较。例如，如本文所演示，它们经过定制可以成为无电池IoT 传感器。与电池供电设备相比，无电池的无线供电设备体积更小、重量更轻。此外，它们对环境友好，因此具有显著的社会效益。本文介绍了一系列高性能电小型惠更斯整流天线，包括惠更斯线极化（HLP）和圆极化（HCP）整流天线、基于这些设计的无线供电IoT 传感器以及双功能HLP整流天线和天线系统。最后，考虑两个线性均匀HLP整流天线阵列系统，以获得更为显著的大型无线电力捕获。示例阵列说明了如何有效将它们与DC或射频（RF）功率进行合成，从而促进IoT的实际应用。

关键词： Antenna Array Cardioid pattern Electrically small antenna Huygens dipole antenna Internet of Things (IoT) Rectenna Rectifier circuit Wireless power transfer

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Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

《环境科学与工程前沿（英文）》 2022年第16卷第11期 doi: 10.1007/s11783-022-1581-0

摘要：

● The co-existing metals in WPCBs has positive catalytic influence in pyrolysis.

关键词： Waste printed circuit board Catalyst Pyrolysis Kinetics

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Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

《环境科学与工程前沿（英文）》 2023年第17卷第10期 doi: 10.1007/s11783-023-1723-z

摘要：

● Au, Ag and Pd were recovered from WPCBs with high efficiencies.

关键词： Thiosulfate Printed circuit boards Precious metals Leaching Hydrometallurgy

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单边直线感应电机等效电路参数研究

徐伟,孙广生

《中国工程科学》 2008年第10卷第8期页码 76-80

摘要：

单边直线感应电机（SLIM）相对于旋转感应电机（RIM）存在气隙大、边缘效应等，若采用RIM开路和短路试验方法，会给参数测量带来较大误差。文章提出的一种适合SLIM参数测定的新型方案，只需测量电机输入端的总功率、相电压、相电流和频率4个量，即可计算出初级电阻、初级漏感、次级电阻、次级漏感、气隙电感和铁损电阻。电机的特性分析表明，该方法真实有效，具有一定的参考价值。

关键词：单边直线感应电机开路试验短路试验参数测量等效电路

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Equivalent circuit and characteristic simulation of a brushless electrically excited synchronous wind

Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU

《机械工程前沿（英文）》 2017年第12卷第3期页码 420-426 doi: 10.1007/s11465-017-0439-9

摘要：

A brushless electrically excited synchronous generator (BEESG) with a hybrid rotor is a novel electrically excited synchronous generator. The BEESG proposed in this paper is composed of a conventional stator with two different sets of windings with different pole numbers, and a hybrid rotor with powerful coupling capacity. The pole number of the rotor is different from those of the stator windings. Thus, an analysis method different from that applied to conventional generators should be applied to the BEESG. In view of this problem, the equivalent circuit and electromagnetic torque expression of the BEESG are derived on the basis of electromagnetic relation of the proposed generator. The generator is simulated and tested experimentally using the established equivalent circuit model. The experimental and simulation data are then analyzed and compared. Results show the validity of the equivalent circuit model.

关键词： wind power brushless electrically excited synchronous generator hybrid rotor equivalent circuit

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Copper recovery from waste printed circuit boards concentrated metal scraps by electrolysis

Xiaonan Liu, Qiuxia Tan, Yungui Li, Zhonghui Xu, Mengjun Chen

《环境科学与工程前沿（英文）》 2017年第11卷第5期 doi: 10.1007/s11783-017-0997-4

摘要： Copper recovery is the core of waste printed circuit boards (WPCBs) treatment. In this study, we proposed a feasible and efficient way to recover copper from WPCBs concentrated metal scraps by direct electrolysis and factors that affect copper recovery rate and purity, mainly CuSO ·5H O concentration, NaCl concentration, H SO concentration and current density, were discussed in detail. The results indicated that copper recovery rate increased first with the increase of CuSO ·5H O NaCl, H SO and current density and then decreased with further increasing these conditions. NaCl, H SO and current density also showed a similar impact on copper purity, which also increased first and then decreased. Copper purity increased with the increase of CuSO ·5H O. When the concentration of CuSO ·5H O, NaCl and H SO was respectively 90, 40 and 118 g/L and current density was 80 mA/cm , copper recovery rate and purity was up to 97.32% and 99.86%, respectively. Thus, electrolysis proposes a feasible and prospective approach for waste printed circuit boards recycle, even for e-waste, though more researches are needed for industrial application.

关键词： Waste printed circuit boards (WPCBs) Copper Recovery rate Purity Electrolysis

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Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

《环境科学与工程前沿（英文）》 2021年第15卷第6期 doi: 10.1007/s11783-021-1405-7

摘要：

• Copper fractal growth was observed during WPCBs recycling by slurry electrolysis.

关键词： Dendritic copper Fractal growth WPCBs Slurry electrolysis

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Enhancement of open circuit voltage in organic solar cells by doping a fluorescent red dye

Qing LI, Junsheng YU, Yue ZANG, Nana WANG, Yadong JIANG

《能源前沿（英文）》 2012年第6卷第2期页码 179-183 doi: 10.1007/s11708-012-0177-y

摘要： The open circuit voltage ( ) of small-molecule organic solar cells (OSCs) could be improved by doping suitable fluorescent dyes into the donor layers. In this paper, 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) was used as a dopant, and the performance of the OSCs with different DCJTB concentration in copper phthalocyanine (CuPc) was studied. The results showed that the of the OSC with 50% of DCJTB in CuPc increased by 15%, compared with that of the standard CuPc/fullerene (C ) device. The enhancement of the was attributed to the lower highest occupied molecular orbital (HOMO) level in the DCJTB than that in the CuPc. Also, the light absorption intensity is enhanced between 400 and 550 nm, where CuPc and C have low absorbance, leading to a broad absorption spectrum.

关键词： organic solar cells (OSCs) open circuit voltage fluorescent dye doping 4-(dicyanomethylene)-2-t-butyl-6-(1 1 7 7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)

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A critical review on the recycling of copper and precious metals from waste printed circuit boards using

Zebing Wu, Wenyi Yuan, Jinhui Li, Xiaoyan Wang, Lili Liu, Jingwei Wang

《环境科学与工程前沿（英文）》 2017年第11卷第5期 doi: 10.1007/s11783-017-0995-6

摘要： Currently, increasing amounts of end-of-life (EoL) electronic products are being generated due to their reduced life spans and the unavailability of suitable recycling technologies. In particular, waste printed circuit boards (PCBs) have become of global concern with regard to environmental issues because of their high metal and toxic material contents, which are pollutants. There are many environmental threats owed to the disposal of electronic waste; off-gasses, such as dioxins, furans, polybrominated organic pollutants, and polycyclic aromatic hydrocarbons, can be generated during thermal treatments, which can cause serious health problems if effective off-gas cleaning systems are not developed and improved. Moreover, heavy metals will dissolve, and release into the ground water from the landfill sites. Such waste PCBs contain precious metals which are of monetary value. Therefore, it is beneficial to recover the metal content and protect the environment from pollution. Hydrometallurgy is a successful technique used worldwide for the recovery of precious metals (especially gold and silver) from ores, concentrates, and waste materials. It is generally preferred over other methods because it can offer high recovery rates at a relatively low cost. This article reviews the recent trends and developments with regard to the recycling of precious metals from waste PCBs through hydrometallurgical techniques, such as leaching and recovery.

关键词： Waste PCBs Precious metals Hydrometallurgy Recycling Leaching Recovery

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current measurement of the thickness of top Cu film of the multilayer interconnects in the integrated circuit

Zilian QU,Yonggang MENG,Qian ZHAO

《机械工程前沿（英文）》 2015年第10卷第1期页码 1-6 doi: 10.1007/s11465-015-0325-2

摘要：

This paper proposes a new eddy current method, named equivalent unit method (EUM), for the thickness measurement of the top copper film of multilayer interconnects in the chemical mechanical polishing (CMP) process, which is an important step in the integrated circuit (IC) manufacturing. The influence of the underneath circuit layers on the eddy current is modeled and treated as an equivalent film thickness. By subtracting this equivalent film component, the accuracy of the thickness measurement of the top copper layer with an eddy current sensor is improved and the absolute error is 3 nm for sampler measurement.

关键词： CMP eddy current multilayer wafer Cu interconnects equivalent unit

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一种改进的新型桥式固态限流器的研究

李洪凤,贾贵玺,齐炜,徐伟

《中国工程科学》 2005年第7卷第8期页码 75-79

摘要：

随着电网容量的不断扩大，短路电流限制技术已成为故障保护的一个研究热点。提出的新型桥式电路是在原有桥式拓扑结构上进行了改进，并提出了新的控制策略。详细介绍了新型桥式限流器的基本工作原理及特点，给出了基于Matlab/Simulink软件的仿真分析和基于天津大学动模实验室的实验结果。仿真与实验结果证明了所提出新型拓扑与控制策略的正确性。

关键词：短路限流器新型桥式电路 Matlab/Simulink仿真动模实验

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基于极限学习机的电动汽车锂离子动力电池外部短路热模型研究 Article

杨瑞鑫, 熊瑞, Weixiang Shen, Xinfan Lin

《工程（英文）》 2021年第7卷第3期页码 395-405 doi: 10.1016/j.eng.2020.08.015

摘要：

锂离子动力电池外部短路（ESC）是电动汽车常见且严重的电气故障之一。为此，本文提出了一种新型电池热模型以准确刻画动力电池外部短路发生后的温度行为。主要工作如下：在不同电池荷电状态和环境温度下，设计并系统地开展了动力电池外部短路实验；为保证模型参数的物理意义和模型的精准性，利用集总参数热模型替换经典极限学习机中的激活函数，构建了基于极限学习机的电池热（ELMT）模型，实现了模型无需迭代调节参数和模型参数就可以具备物理属性的双重优势，极大提高了模型计算效率与准确度；为了评估模型改进的必要性，比较了极限学习机热模型与遗传算法参数化的多集总参数热（MLT）模型。结果表明，ELMT模型相比MLT模型具有更优异的计算效率以及拟合、预测精度。其中，ELMT模型拟合和预测电池温度的均方根误差分别为0.65 ℃和3.95 ℃，MLT模型拟合和预测电池温度的均方根误差分别为3.97 ℃和6.11 ℃。

关键词：电动汽车电池安全外部短路温升预测极限学习机

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Solid-state transformer-based new traction drive system and control

Jianghua FENG, Jing SHANG, Zhixue ZHANG, Huadong LIU, Zihao HUANG

《机械工程前沿（英文）》 2018年第13卷第3期页码 411-426 doi: 10.1007/s11465-018-0467-0

摘要：

A new type of traction drive system consisting of solid-state traction transformer (SSTT), inverter unit, auxiliary inverter, traction motor and other key components is built in order to suit the demand of developing the next-generation electric traction system which will be efficient and lightweight, with high power density. For the purpose of reducing system volume and weight and improving efficiency and grid-side power quality, an efficient SSTT optimized topology combining high-voltage cascaded rectifiers with high-power high-frequency LLC resonant converter is proposed. On this basis, an integrated control strategy built upon synchronous rotating reference frame is presented to achieve unified control over fundamental active, reactive and harmonic components. The carrier-interleaving phase shift modulation strategy is proposed to improve the harmonic performance of cascaded rectifiers. In view of the secondary pulsating existing in a single-phase system, the mathematical model of secondary power transfer is built, and the mechanism of pulsating voltage resulting in beat frequency of LLC resonant converter is revealed, so as to design optimum matching of system parameters. Simulation and experimental results have verified that the traction system and control scheme mentioned in this paper are reasonable and superior and that they meet the future application requirements for rail transit.

关键词： solid-state traction transformer high-voltage cascaded rectifier LLC resonant converter synchronous rotating reference frame carrier-interleaving phase shift control secondary pulsating voltage beat frequency

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Analytical model and finite element computation of braking torque in electromagnetic retarder

Lezhi YE,Guangzhao YANG,Desheng LI

《机械工程前沿（英文）》 2014年第9卷第4期页码 368-379 doi: 10.1007/s11465-014-0314-x

摘要：

An analytical model has been developed for analyzing the braking torque in electromagnetic retarder by flux tube and armature reaction method. The magnetic field distribution in air gap, the eddy current induced in the rotor and the braking torque are calculated by the developed model. Two-dimensional and three-dimensional finite element models for retarder have also been developed. Results from the analytical model are compared with those from finite element models. The validity of these three models is checked by the comparison of the theoretical predictions and the measurements from an experimental prototype. The influencing factors of braking torque have been studied.

关键词： electromagnetic retarder magnetic field distribution magnetic circuit finite element method