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A driving pulse edge modulation technique and its complex programming logic devices implementation

Xiao CHEN,Dong-chang QU,Yong GUO,Guo-zhu CHEN

《信息与电子工程前沿（英文）》 2015年第16卷第12期页码 1088-1098 doi: 10.1631/FITEE.1500111

摘要： With the continual increase in switching speed and rating of power semiconductors, the switching voltage spike becomes a serious problem. This paper describes a new technique of driving pulse edge modulation for insulated gate bipolar transistors (IGBTs). By modulating the density and width of the pulse trains, without regulating the hardware circuit, the slope of the gate driving voltage is controlled to change the switching speed. This technique is used in the driving circuit based on complex programmable logic devices (CPLDs), and the switching voltage spike of IGBTs can be restrained through software, which is easier and more flexible to adjust. Experimental results demonstrate the effectiveness and practicability of the proposed method.

关键词： Driving pulse edge modulation Switching voltage spike Complex programmable logic device (CPLD) Active gate drive

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Information gathering and processing with fluorescent molecules

Brian DALY,Jue LING,A. Prasanna de SILVA

《化学科学与工程前沿（英文）》 2014年第8卷第2期页码 240-251 doi: 10.1007/s11705-014-1432-z

摘要： Molecular information gathering and processing — a young field of applied chemistry — is undergoing good growth. The progress is occurring both in terms of conceptual development and in terms of the strengthening of older concepts with new examples. This review critically surveys these two broad avenues. We consider some cases where molecules emulate one of the building blocks of electronic logic gates. We then examine molecular emulation of various Boolean logic gates carrying one, two or three inputs. Some single-input gates are popular information gathering devices. Special systems, such as ‘lab-on-a-molecule’ and molecular keypad locks, also receive attention. A situation deviating from the Boolean blueprint is also discussed. Some pointers are offered for maintaining the upward curve of the field.

关键词： molecular logic molecular computation molecular sensor fluorescent molecular device fluorescent sensor

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一种非侵入式的基于功耗的可编程逻辑控制器异常检测方案 Article

Yu-jun XIAO, Wen-yuan XU, Zhen-hua JIA, Zhuo-ran MA, Dong-lian QI

《信息与电子工程前沿（英文）》 2017年第18卷第4期页码 519-534 doi: 10.1631/FITEE.1601540

摘要：可编程逻辑控制器（Programmable logic controller, PLC）作为工业控制系统中的核心组件，能够直接控制现场设备，一旦PLC中运行了恶意程序，则可能直接造成重大财产损失甚至是人员伤亡

关键词：工业控制系统；可编程逻辑控制器；边信道；异常检测；基于长短记忆单元的神经网络模型

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基于RTD三变量通用逻辑门的函数综合算法 Article

Mao-qun YAO, Kai YANG, Ji-zhong SHEN, Cong-yuan XU

《信息与电子工程前沿（英文）》 2017年第18卷第10期页码 1654-1664 doi: 10.1631/FITEE.1601730

摘要：共振隧穿器件（resonant tunneling device, RTD）比传统电子器件CMOS具有更优秀的性能，极有可能成为下一代集成电路的电子器件。首先，提出真值矩阵的概念，并提出一种运用真值矩阵将任意n变量逻辑函数分解成3变量子集函数的非相交分解算法；在上述工作基础上，提出用基于RTD通用阈值逻辑门（universal threshold logic

关键词：共振隧穿器件（RTD）；非相交分解算法；通用逻辑门；真值矩阵；函数综合算法

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Efficient detection methods for amplify-and-forward relay-aided device-to-device systems with full-rate Article

Kang-li ZHANG, Cong ZHANG, Fang-lin GU, Jian WANG

《信息与电子工程前沿（英文）》 2017年第18卷第6期页码 788-795 doi: 10.1631/FITEE.1700018

摘要：中继辅助设备到设备通信是下一代蜂窝网络中一项极具潜力的技术。研究了适用于配置多天线的放大转发中继辅助设备到设备通信系统的不同传输方案。为了解决基于全速率空时块码传输方案的传统最大似然检测算法复杂度高的问题，文中提出两种低复杂度检测方法，分别为采用最大似然合并算法的检测方法和采用联合条件最大似然检测器的检测方法。特别是，所提的基于联合条件最大似然检测器的检测方法，能够通过牺牲一定的存储空间换取较好的并行处理能力。仿真结果表明：针对采用全速率空时块码传输方案提出的两种检测方法，能够获得与传统最大似然检测方法近乎相同的误符号率，但所提检测方法复杂度更低；同时，采用基于全速率空时块码的传输方案比复用传输方案具有更优的误码性能。仿真结果还进一步验证了对所提检测方法的分集增益分析。

关键词：设备到设备通信；中继；检测；全速率空时块码

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Design of a novel RTD-based three-variable universal logic gate

Mao-qun YAO,Kai YANG,Cong-yuan XU,Ji-zhong SHEN

《信息与电子工程前沿（英文）》 2015年第16卷第8期页码 694-699 doi: 10.1631/FITEE.1500102

摘要： Traditional CMOS technology faces some fundamental physical limitations. Therefore, it has become very important for the integrated circuit industry to continue to develop modern devices and new design methods. The threshold logic gate has attracted much attention because of its powerful logic function. The resonant tunneling diode (RTD) is well suited for implementing the threshold logic gate because of its high-speed switching capability, negative differential resistance (NDR) characteristic, and functional versatility. In this paper, based on the Reed-Muller (RM) algebraic system, a novel method is proposed to convert three-variable non-threshold functions to the XOR of multiple threshold functions, which is simple and has a programmable implementation. With this approach, all three-variable non-threshold functions can be presented by the XOR of two threshold functions, except for two special functions. On this basis, a novel three-variable universal logic gate (ULG3) is proposed, composed of two RTD-based universal threshold logic gates (UTLG) and an RTD-based three-variable XOR gate (XOR3). The ULG3 has a simple structure, and a simple method is presented to implement all three-variable functions using one ULG3. Thus, the proposed ULG3 provides a new efficient universal logic gate to implement RTD-based arbitrary -variable functions.

关键词： Resonant tunneling diode (RTD) Threshold logic gate Reed-Muller expansion Universal logic gate

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Application of fuzzy logic control algorithm as stator power controller of a grid-connected doubly-fed

Ridha CHEIKH, Arezki MENACER, Said DRID, Mourad TIAR

《能源前沿（英文）》 2013年第7卷第1期页码 49-55 doi: 10.1007/s11708-012-0217-7

摘要： This paper discusses the power outputs control of a grid-connected doubly-fed induction generator (DFIG) for a wind power generation systems. The DFIG structure control has a six diode rectifier and a PWM IGBT converter in order to control the power outputs of the DFIG driven by wind turbine. So, to supply commercially the electrical power to the grid without any problems related to power quality, the active and reactive powers ( , ) at the stator side of the DFIG are strictly controlled at a required level, which, in this paper, is realized with an optimized fuzzy logic controller based on the grid flux oriented control, which gives an optimal operation of the DFIG in sub-synchronous region, and the control of the stator power flow with the possibility of keeping stator power factor at a unity.

关键词： doubly-fed induction generator (DFIG) vector control fuzzy logic controller optimization power factor unity active and reactive power

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Design method and verification of a hybrid prosthetic mechanism with energy-damper clutchable device

《机械工程前沿（英文）》 2021年第16卷第4期页码 747-764 doi: 10.1007/s11465-021-0644-4

摘要： Transfemoral amputees (TAs) have difficulty in mobility during walking, such as restricted movement of lower extremity and body instability, yet few transfemoral prostheses have explored human-like multiple motion characteristics by simple structures to fit the kinesiology, biomechanics, and stability of human lower extremity. In this work, the configurations of transfemoral prosthetic mechanism are synthesized in terms of human lower-extremity kinesiology. A hybrid transfemoral prosthetic (HTP) mechanism with multigait functions is proposed to recover the gait functions of TAs. The kinematic and mechanical performances of the designed parallel mechanism are analyzed to verify their feasibility in transfemoral prosthetic mechanism. Inspired by motion–energy coupling relationship of the knee, a wearable energy-damper clutched device that can provide energy in knee stance flexion to facilitate the leg off from the ground and can impede the leg’s swing velocity for the next stance phase is proposed. Its co-operation with the springs in the prismatic pairs enables the prosthetic mechanism to have the energy recycling ability under the gait rhythm of the knee joint. Results demonstrate that the designed HTP mechanism can replace the motion functions of the knee and ankle to realize its multimode gait and effectively decrease the peak power of actuators from 94.74 to 137.05 W while maintaining a good mechanical adaptive stability.

关键词： hybrid transfemoral prosthetic mechanism energy recycling wearable mechanical clutched device mechanical adaptive stability

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An interval type-2 fuzzy logic controller for TCSC to improve the damping of power system oscillations

Manoj Kumar PANDA, Gopinath PILLAI, Vijay KUMAR

《能源前沿（英文）》 2013年第7卷第3期页码 307-316 doi: 10.1007/s11708-013-0269-3

摘要： In this paper an interval type-2 fuzzy logic controller (IT2FLC) was proposed for thyristor controlled series capacitor (TCSC) to improve power system damping. For controller design, memberships of system variables were represented using interval type-2 fuzzy sets. The three-dimensional membership function of type-2 fuzzy sets provided additional degree of freedom that made it possible to directly model and handle uncertainties. Simulations conducted on a single machine infinite bus (SMIB) power system showed that the proposed controller was more effective than particle swarm optimization (PSO) tuned and type-1 fuzzy logic (T1FL) based damping controllers. Robust performance of the proposed controller was also validated at different operating conditions, various disturbances and parameter variation of the transmission line parameters.

关键词： power system oscillations thyristor controlled series capacitor (TCSC) type-2 fuzzy logic system interval type-2 fuzzy logic controller (IT2FLC)

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Doubly-fed induction generator drive based WECS using fuzzy logic controller

Abdelhak DIDA,Djilani BEN ATTOUS

《能源前沿（英文）》 2015年第9卷第3期页码 272-281 doi: 10.1007/s11708-015-0363-9

摘要： The purpose of this paper is to improve the control performance of the variable speed, constant frequency doubly-fed induction generator in the wind turbine generation system by using fuzzy logic controllers. The control of the rotor-side converter is realized by stator flux oriented control, whereas the control of the grid-side converter is performed by a control strategy based on grid voltage orientation to maintain the DC-link voltage stability. An intelligent fuzzy inference system is proposed as an alternative of the conventional proportional and integral (PI) controller to overcome any disturbance, such as fast wind speed variation, short grid voltage fault, parameter variations and so on. Five fuzzy logic controllers are used in the rotor side converter (RSC) for maximum power point tracking (MPPT) algorithm, active and reactive power control loops, and another two fuzzy logic controllers for direct and quadratic rotor currents components control loops. The performances have been tested on 1.5 MW doubly-fed induction generator (DFIG) in a Matlab/Simulink software environment.

关键词： fuzzy logic wind turbine vector control doubly-fed induction generator (DFIG)

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Experiment and optimal design of a collection device for a residual plastic film baler

Qi NIU,Xuegeng CHEN,Chao JI,Jie WU

《农业科学与工程前沿（英文）》 2015年第2卷第4期页码 347-354 doi: 10.15302/J-FASE-2015077

摘要： It is imperative to carry out research on residual plastic film collection technology to solve the serious problem of farmland pollution. The residual plastic film baler was designed as a package for film strip collection, cleaning and baling. The collection device is a core component of the baler. Response surface analysis was used in this study to optimize the structure and working parameters for improving the collection efficiency of residual film and the impurity of film package. The results show that the factors affecting the collection rate of residual film and the impurity of the film package are the speed ratio ( ) between the trash removal roller and eccentric collection mechanism, the number ( ) and the mounting angle ( ) of spring teeth in the same revolution plane. For the collection rate, the importance of the three factors are in the order, . Meanwhile, for the impurity, the importance of three factors are in the order, . When the speed ratio, the mounting angle and the number of spring teeth was set at 1.6°, 45°, and 8°, respectively, the collection rate of residual film was 88.9% and the impurity of residual film package was 14.2% for the baler.

关键词： residual film collection device collection rate of residual film impurity of film package optimization baler

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A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber

《环境科学与工程前沿（英文）》 2023年第18卷第4期 doi: 10.1007/s11783-024-1800-y

摘要：

● A spindle-shaped influent chamber was designed and equipped in FCDI system.

关键词： Spindle-shaped chamber Desalination performance Flow electrode capacitive deionization

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Enhancing power generation of piezoelectric bimorph device through geometrical optimization

Action NECHIBVUTE,Albert CHAWANDA,Pearson LUHANGA

《能源前沿（英文）》 2015年第9卷第2期页码 246-246 doi: 10.1007/s11708-015-0360-z

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Special issue on “Molecular Sensors and Molecular Logic Gates”

Luling Wu , Tony D. James

《化学科学与工程前沿（英文）》 2022年第16卷第1期页码 1-3 doi: 10.1007/s11705-021-2134-y

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可编程软件定义网络的新架构与安全技术：综述 None

Shen WANG, Jun WU, Wu YANG, Long-hua GUO

《信息与电子工程前沿（英文）》 2018年第19卷第12期页码 1500-1521 doi: 10.1631/FITEE.1800575

摘要：当前，网络空间已经成为社会基础设施的一个重要组成部分。随着网络规模快速发展，应用程序和服务日益丰富，底层网络设备（如交换机和路由器）承载功能被不断扩展。为提升网络动态架构、安全性和服务质量，网络控制平面与数据平面的解耦是网络技术发展趋势。目前，软件定义网络（SDN）是新兴网络领域最热门、最具前景的技术之一。在SDN中，通过在专有设备部署高级别策略指导网络设备数据转发，减少网络设备复杂功能。SDN有利于实现网络新技术、新协议，提升部署功能灵活性和可操作性。然而，该新型网络技术面临架构和安全方面的新挑战。本文为可编程SDN最新进展相关研究提供一个全面综述，分析已被研究和有待解决的问题，并分析在框架架构和安全领域的发展趋势。

关键词：软件定义网络（SDN）；安全；可编程

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标题作者时间类型操作

A driving pulse edge modulation technique and its complex programming logic devices implementation

Xiao CHEN,Dong-chang QU,Yong GUO,Guo-zhu CHEN

期刊论文

Information gathering and processing with fluorescent molecules

Brian DALY,Jue LING,A. Prasanna de SILVA

期刊论文

一种非侵入式的基于功耗的可编程逻辑控制器异常检测方案

Yu-jun XIAO, Wen-yuan XU, Zhen-hua JIA, Zhuo-ran MA, Dong-lian QI

期刊论文