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A Modeling Method of the IBC System Based on the Composite Fading Channel

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Journal of Beijing Institute of Technology 2022年第1期31卷 61-70页

作者： Maoyuan Li Xu Zhang Yong Song Yu Chen Wu Ren School of Optics and Photonics Beijing Institute of TechnologyBeijing100081China School of Information and electronics Beijing Institute of TechnologyBeijing 100081China

Intra-body communication(IBC)is a novel short-range non-RF(radio frequency)wire-less communication technique specified by the ieee 802.15.6 using the human body as a transmis-sion *** this work,a new modeling method of the IBC system based on the composite fad-ing channel is proposed,where the cascaded filter is used to express the composite fading channel and the modulation method in transmitter and *** composite fading channel combines with the average attenuation,group delay,multipath effect,and shadowing *** modulation is adopted orthogonal frequency division multiplexing(OFDM),and thereby the constellation,cyc-lic prefix,bit error rate,and pilot mode are *** a result,the whole process and multi-parameter simulation of IBC system can be *** provides a theoretical foundation for the system design of the intra-body communication and will promote its application to the wireless body area network(WBAN).

关键词： intra-body communication(IBC) modeling orthogonal frequency division multiplex-ing(OFDM) fading channel

Load shedding strategy coordinated with storage device and D-STATCOM to enhance the microgrid stability

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Protection and Control of Modern Power Systems 2019年第1期4卷 262-280页

作者： Sheetal Chandak Pritam Bhowmik Pravat Kumar Rout Electrical Engineering Department Siksha‘O’Anusandhan UniversityBhubaneswar751030India Electrical and electronics Engineering Department Siksha‘O’Anusandhan UniversityBhubaneswar751030India

Recently microgrids have drawn a potential attraction by fulfilling the environmental demands and the increasing energy demands of the end-users. It is necessary to focus on various protection and control aspects of a microgrid. During the transition between the grid-following and grid-forming modes, the voltage and the frequency instability due to the power mismatch condition becomes the major point of concern. Therefore, the paper executes a frequency-active power and voltage-reactive power drooping control strategy for the precise power-sharing among the distributed power generators. Furthermore, to handle the power deficit scenarios and to maintain the system stability, a system independent and priority-based adaptive three-stage load shedding strategy is proposed. The sensitivity of the strategy depends on the system inertia and is computed according to the varying absolute rate-of-change-of-frequency. The strategy incorporates the operation of battery storage system and distributed static compensator (D-STATCOM) in the microgrid, to provide a reliable power supply to the customers for a considerable time instead of a sudden load shedding. The effectiveness of the proposed strategies is investigated on a scaled-down modified ieee 13-bus microgrid system on the podium of MATLAB 2015b through the time-domain simulation.

关键词： Microgrid Power-sharing Load shedding High inertia distributed generators Inertia-less distributed generators Battery storage system D-STATCOM

An Overview of Calibration Technology of industrial Robots

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ieee/CAA Journal of Automatica Sinica 2021年第1期8卷 23-36页

作者： Zhibin Li Shuai Li Xin Luo the School of Computer Science and Technology Dongguan University of TechnologyDongguanGuangdong 523808 the School of Computer Science and Technology Chongqing University of Posts and TelecommunicationsChongqing 400065China the Department of electronics and Electrical Engineering Swansea UniversitySwansea SA18EN the Hengrui(Chongqing)Artificial Intelligence Research Center Department of Big Data Analyses TechniquesCloudwalkChongqing 401331China the Department of electronics and Electrical Engineering Swansea UniversitySwansea SA18ENUK

With the continuous improvement of automation,industrial robots have become an indispensable part of automated production *** widely used in a number of industrial production activities,such as spraying,welding,handling,etc.,and have a great role in these ***,the robotic technology is developing towards high precision,high *** calibration technology has a great significance to improve the accuracy of ***,it has much work to be done in the identification of robot *** parameter identification work of existing serial and parallel robots is *** the one hand,it summarizes the methods for parameter calibration and discusses their advantages and *** the other hand,the application of parameter identification is *** overview has a great reference value for robot manufacturers to choose proper identification method,points further research areas for ***,this paper analyzes the existing problems in robot calibration,which may be worth researching in the future.

关键词： Absolute pose accuracy identification method industrial robots parameter identification robot calibration technology robot parameters

Attainability and Set Analysis for Uncertain PWA Systems with Parameter Variations and Bounded Disturbance

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Attainability and Set Analysis for Uncertain PWA Systems wit...

2009中国控制与决策会议

作者： Jean Thomas Sorin Olaru Jean Buisson Didier Dumur Faculty of industrial Education Beni-Sueif UniversityEgypt

＜正＞This paper considers discrete-time,uncertain Piecewise Affine（PWA） systems affected by both parameter variations and bounded *** are interested in the characterization of attainability,understood as the reachability of a state space region,associated to a certain invariance *** approach computes in the first stage the maximal set in the state space from which states can be driven to the target region while taking into account the system uncertainties.A polyhedral approach to find the minimum safety horizon（cyclic invariance set） to maintain the system states within the given target region is then presented.A new polyhedral algorithm is proposed to reduce the number of polyhedral regions and decrease the required memory size and consequently the robust control computation load.

关键词： Uncertain Piecewise Affine System Attainability Set Analysis Cyclic Invariance Set

A Switched-Capacitor Lossless Inductor ZCS Snubber-Assisted Series Load Resonant High Frequency Inverter with Dual Mode Pulse Modulation Scheme

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A Switched-Capacitor Lossless Inductor ZCS Snubber-Assisted ...

CES/ieee 5th International Power electronics and Motion Control Conference

作者： Khairy Fathy Takaaki Okude Hideki Omori Hyun Woo Lee Mutsuo Nakaoka Kyungnam University Masan Korea Matsushita Electric industrial Co.Ltd. Osaka Japan Matsushita Electric industrial Co.Ltd. Osaka Japan Kyungnam University Masan Korea Kyungnam University Masan Korea Industrial College of TechnologyHyogoJapan

＜正＞In this paper, a novel type auxiliary active edge resonant snubber assisted zero current soft switching pulse modulation series load resonant inverter using IGBT power modules is proposed for cost effective consumer high-frequency induction heating （IH） appliances. Its operating principle in steady state is described by using each switching mode equivalent operating circuits. The new multi resonant high-frequency inverter with series load resonance and edge resonance can regulate its high frequency output power under a condition of a constant frequency zero current soft switching （ZCS） commutation principle on the basis of asymmetrical pulse width modulation （PWM） control scheme. The consumer brand-new IH products using proposed ZCS-PWM high-frequency inverter is evaluated and discussed as compared with conventional type inverter on the basis of experimental results. In order to extend ZCS operation ranges under a low power setting PWM as well as to improve efficiency, the high frequency pulse density modulation （PDM） strategy is demonstrated for high frequency multi resonant inverter. Its practical effectiveness is substantially proved from an application point of view.

关键词： Auxiliary switched capacitor snubber Consumer IH appliances Dual mode PWM and PDM control Lossless inductor snubbers Zero current soft switching.

Can *** Be Another "Groupon" ? A Comparative Study on Online Coupon Sale in USA and China 3rd

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Can *** Be Another "Groupon" ? A Comparative Study on Online...

2011 International Conference on Information Management and Engineering(ICIME 2011)

作者： Feng Xu Foreign Languages Department Zhengzhou Institute of Aeronautic Industrial Management

ISBN: (纸本)9781612842387

Since it’s foundation in late 2007, just in two years, Groupon has reached a value of more than 6 million dollars, and was considered to be the fastest-growing online business company. *** in China, as a copycat of Groupon, also grows in a rapid pace. This article first gives an analysis of the foundation, operation and growing-up of the two online coupon-sale companies, then based on a survey conducted in China, the paper gave an illustration of problems *** being faced with, finally the paper provide some suggestions to the operation of online coupon-sale companies in China.

关键词： Groupon *** coupon online sales

An Optimization Model for Determining Optimal Levels of Engineering Characteristics in QFD under Multi-Segment Market

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An Optimization Model for Determining Optimal Levels of Engi...

2011 Chinese Control and Decision Conference（CCDC）

作者： C.K.KWONG Department of industrial and Systems Engineering The Hong Kong Polytechnic University

An optimization model for a multi-segment market based on quality function deployment is established to maximize customers’ overall customer *** weights of importance of market segments and development costs in the model are expressed as triangular fuzzy numbers in order to describe the imprecision caused by human subjective *** solving approach for the fuzzy optimization model is suggested.A case study is given to illustrate the feasibility of the proposed method.

关键词： quality function deployment new product development customer requirements engineering characteristics fuzzy optimization

Automated Boundary Extraction by Gradient Fuzzy Gray-Scale Hit-or-Miss Transformation

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Automated Boundary Extraction by Gradient Fuzzy Gray-Scale H...

Electronic Communication Systems--The 2000 ieee Asia-Pacific Conference on Circuits and Systems

作者： Sathit Intajag Kitti Paithoonwatanakij Dept.of industrial Instrumentation Technology Faculty of EngineeringKing Mongkut's Institute of Technology LadkrabangBangkok 10520Thailand Dept.of electronics Faculty of EngineeringKing Mongkut's Institute of Technology LadkrabangBangkok 10520Thailand

＜正＞The fuzzy Gray-Scale Hit-or-Miss Transformation （GHMT） is a fuzzy morphology operator,which is a key for the feature extraction in the ambiguous *** this paper,we propose a novel concept of gradient fuzzy GHMT that is employed for automatically extracting a boundary of the multi-scale *** edge enhancement with a morphological anisotropic diffusion coefficient capability can smooth the noisy region while preserving the edge *** gradient of the fuzzy GHMT utilizes a set of the structuring elements to detect the edge strength with a view to decrease the spurious edge and suppressed the *** will be presenting both for the synthetic and the natural images in comparison with the others morphological edging detector.

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The Phenomenal Alleviation of Transmission Congestion by Optimally Placed Multiple Distributed Generators Using PSO

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Circuits and Systems 2016年第8期7卷 1677-1688页

作者： Karuppasamy Muthulakshmi Rajamanickam Manickaraj Sasiraja Velu Suresh Kumar Department of Electrical and electronics Engineering Kamaraj College of Engineering and Technology Virudhunagar India Department of Electrical and electronics Engineering Anna University Regional Campus Madurai Madurai India Department of Electrical and electronics Engineering Thiagarajar College of Engineering Madurai India

In the current electricity paradigm, the rapid elevation of demands in industrial sector and the process of restructuring are the main causes for the overuse of transmission systems. Hence, the evolution of novel technology is the ultimate need to avoid the damages in the available transmission systems. An appreciable volume of renewable energy sources is used to produce electric power, after the implementation of deregulation in power system. Even though, they are intended to improve the reliability of power system, the unpredictable outages of generators or transmission lines, an impulsive increase in demand and the sudden failures of vital equipment cause transmission congestion in one or some transmission lines. Generation rescheduling and load shedding can be used to alleviate congestion, but some cases require quite few improved methods. With the extensive application of Distributed Generation (DG), congestion management is also performed by the optimal placement of DGs. Therefore, this research employs a Line Flow Sensitivity Factor (LFSF) and Particle Swarm Optimization (PSO) for the determination of optimal location and size of multiple DG units, respectively. This proposed problem is formulated to minimize the total system losses and real power flow performance index. This approach is experimented in modified ieee-30 bus test system. The results of N-1 contingency analysis with DG units prove the competence of this proposed approach, since the total numbers of congested lines get reduced from 15 to 2. Hence, the results show that the proposed approach is robust and simple in alleviating transmission congestion by the optimal placement and sizing of multiple DG units.

关键词： Congestion Management Line Flow Sensitivity Factor Distributed Generation Particle Swarm Optimization