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Cross Layered MAC Design for RF Energy Harvesting Sensor Network

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Circuits and Systems 2016年第9期7卷 2676-2688页

作者： Thangavelu Sasikala Veerasamy Jawahar senthil kumar Department of ECE College of Engineering Anna University Chennai India

The main research objective in wireless sensor networks (WSN) domain is to develop algorithms and protocols to ensure minimal energy consumption with maximum network lifetime. In this paper, we propose a novel design for energy harvesting sensor node and cross-layered MAC protocol using three adjacent layers (Physical, MAC and Network) to economize energy for WSN. The basic idea behind our protocol is to re-energize the neighboring nodes using the radio frequency (RF) energy transmitted by the active nodes. This can be achieved by designing new energy harvesting sensor node and redesigning the MAC protocol. The results show that the proposed cross layer CL_EHSN improves the life time of the WSN by 40%.

关键词： Wireless Sensor Network Cross Layer Design RF Energy Harvesting Lifetime Enhancement

RETRACTED ARTICLE: loT based residential energy management system for demand side response through load transfer with various types of domestic appliances

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Building Simulation 2022年第9期15卷 1703-1703页

作者： R Ganesh Babu V Amudha C Chellaswamy K senthil kumar Department of Electronics and Communication Engineering SRM TRP Engineering CollegeTiruchirappalliIndia Department of Electronics and Communication Engineering Saveetha School of Engineering(SIMATS)ChennaiTamilnaduIndia Department of Electronics and Communication Engineering Lords Institute of Engineering and TechnologyHyderabadIndia Department of Electronics and Communication Engineering Rajalakshmi Institute of TechnologyChennaiTamilnaduIndia

The Editor-in-Chief has retracted this *** publication,concerns were raised about the high similarity between this article and a previous publication from different authors(Duman et al.2021).Specifically,similarities were identified in the text in the Literature Review and Methodology sections of this article and those in Duman et al.(2021).Additionally,Tables 2 and 3 appear to be copied from Duman et al.(2021).The authors were unable to provide satisfactory source data used in their analysis upon the Editors *** Editor-in-Chief therefore no longer has confidence in the authenticity of the presented data and the originality of the work.

关键词： authentic similarity raised

A Comparative Study on the Milling Speed for the Synthesis of Nano-Structured Al 6063 Alloy Powder by Mechanical Alloying

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Journal of Minerals and Materials Characterization and Engineering 2011年第6期10卷 507-515页

作者： Hafeez Ahamed V. senthil kumar Department of Production Engineering National Institute of Technology Thiruchirappalli-620015 India.

The present article reports on characterization studies performed on amorphized nanostructured Al 6063 alloy powder synthesized by mechanical alloying (MA). The as-milled powder was characterized by X-ray diffraction (XRD) for investigating the development of crystallite nature and determining the different phases of the materials present, scanning electron microscope (SEM) was used for in depth morphological study and High Resolution-transmission electron microscope (HR-TEM) was employed to ensure the development of a nano-structured nature of the Al 6063 matrix. In the present work alloyed powder was milled for 20 h and 40 h at 300 rpm;and 20 h at 700 rpm in a hardened stainless steel medium. Using Williamson-Hall equation;crystallite size, lattice strain and lattice parameter of Al 6063 nanostructure alloy powder was estimated with broadening of XRD peaks. XRD results showed that the crystallite size of Al 6063 alloy powder reached 32 and 53 nm after 20 h at 700 rpm and 40 h at 300 rpm respectively.

关键词： Nano-structured Al 6063 Synthesis.

响应面方法在奥氏体不锈钢与铜合金异种材料摩擦焊接头的抗拉强度最大化和界面硬度最小化中的应用(英文)

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Transactions of Nonferrous Metals Society of China 2013年第8期23卷 2250-2259页

作者： G. VAIRAMANI T. senthil kumar S. MALARVIZHI V. BALASUBRAMANIAN Department of Mechanical Engineering Seshasayee Institute of Technology Department of Mechanical Engineering Anna University of ChennaiTiruchirappalli Campus Centre for Materials Joining & Research (CEMAJOR) Department of Manufacturing EngineeringAnnamalai University

在奥氏体不锈钢与铜合金异种材料摩擦焊接过程中,采用响应面方法优化摩擦焊接工艺参数,以获得抗拉强度最大和界面硬度最小的焊接接头。采用三因素、五水平中心复合正交矩阵来确定实验条件。得到20个焊接接头,测定了焊接接头的抗拉强度... 详细信息

在奥氏体不锈钢与铜合金异种材料摩擦焊接过程中,采用响应面方法优化摩擦焊接工艺参数,以获得抗拉强度最大和界面硬度最小的焊接接头。采用三因素、五水平中心复合正交矩阵来确定实验条件。得到20个焊接接头,测定了焊接接头的抗拉强度和界面硬度。采用方差分析(ANOVA)方法来确定起显著作用的、主要的及相互作用的参数,使用回归分析得到经验关系模型。用设计专家软件构造响应图和等高线图来优化摩擦焊接工艺参数。用得到的经验关系模型可以有效地预测焊接接头的抗拉强度和界面硬度,其置信水平达95%。从形成的等高线图可以得到所需的摩擦焊接的最佳条件。

关键词：摩擦焊接奥氏体不锈钢铜合金抗拉强度界面硬度响应面方法

Removal of Moisture Content in Paper Machine Using Soft Computing Techniques

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Circuits and Systems 2016年第9期7卷 2542-2550页

作者： M. senthil kumar K. Mahadevan Department of Electrical and Electronics Engineering Syed Ammal Engineering College Landhai Tamil Nadu India Department of Electrical and Electronics Engineering PSNA College of Engineering and Technology Dindigul Tamil Nadu India

The choice of this investigation is to tune the proportional-integral-derivative (PID) parameters separately for controlling the moisture content in paper industry by using Particle Swarm Optimization (PSO). This paper boon a new algorithm for PID controller tuning based particle swarm optimization. PSO algorithm has recently developed as a very powerful method for real parameter optimization. This new process is proposed to combine both the algorithms to get better optimization values. The proposed algorithm tuned the PID parameters and its performance has been compared with PID algorithm. Compared to PID algorithm technique, dynamic performance requirements such as rise time settling time and peak overshoot optimal values produced by PSO. The plant model represented by the transfer function is obtained by the system identification toolbox.

关键词： PID Controller Particle Swarm Optimization Industrial Application

Inverter Power Stage Connected with PV-Grid

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Circuits and Systems 2016年第13期7卷 4113-4123页

作者： K. Kirubasankar Dr. A. senthil kumar Chennai Institute of Technology Chennai India Velammal Engineering College Chennai India

This paper focuses on the design of the inverter power stage connected with PV-grid which supports the contrived PV system. The increased number of grid connected photovoltaic (PV) inverters gave rise to problems concerning the stability and safety of the utility grid, as well as power quality issues. The proposed systems can overcome these issues and improve standard regulation methods for gird connected PV inverter. The maximum available voltage in the PV string is tracked by the power stage which has been planned and designed in such a way. The tracked voltage is boosted then. The important components to voltage source inverter (VSI) are boost inductor and input capacitor which are calculated. To get a clear sinusoidal output phase voltage of 230 V from a DC capacitance bus projected to deal with 400 V, the important inverter stage parameters have been planned and modeled in Mat lab. Each block stage of the converter is easily understandable by the Simlink of the dual stage DC-AC converter explanation. The control schemes which have been proposed would compromise with the inverter power stage which forms the neat grid system. The existing renewable energy sources in the laboratory are integrated by the proposed control.

关键词： PV-Grid Maximum Power Point Tracking Inverter Power Stage Converter

PVD硬质合金刀具加工NimonicC-263合金表面粗糙度的建模和分析(英文)

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Transactions of Nonferrous Metals Society of China 2011年第9期21卷 1986-1994页

作者： C. EZILARASAN V. S. senthil kumar A. VELAYUDHAM K. PALANIkumar Department of Mechanical Engineering Anna University Chennai Combat Vehicles Research and Development Establishment Sri Sairam Institute of Technology

研究了加工Nimonic C-263合金时,切削参数(切削速度、给进速度、切削深度等)对表面粗糙度的影响。采用正交方法设计实验。评估了切削参数对表面粗糙度的影响,获得最小粗糙度的最优切削条件。采用响应面方法建立了切削参数和表面粗糙度... 详细信息

研究了加工Nimonic C-263合金时,切削参数(切削速度、给进速度、切削深度等)对表面粗糙度的影响。采用正交方法设计实验。评估了切削参数对表面粗糙度的影响,获得最小粗糙度的最优切削条件。采用响应面方法建立了切削参数和表面粗糙度的二次多项式模型。实验结果表明:在所考察的切削参数中,给进速度对表面粗糙度的影响最为显著,其次是切削速度。模型预测结果与实际结果吻合较好,表明所建立的模型能够用来有效地预测加工Nimonic C-263合金时的表面粗糙度。最后,对预测结果用加成定律进行了验证。

关键词： Nimonic C-263合金表面粗糙度响应面方法

Microprocessors and microcontrollers

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Commissioning of TrueBeam^TM Medical Linear Accelerator: Quantitative and Qualitative Dosimetric Analysis and Comparison of Flattening Filter (FF) and Flattening Filter Free (FFF) Beam

2010年

作者： n. senthil kumar

icroprocessors and Microcontrollers is designed as a comprehensive textbook for undergraduate engineering students to lay a strong foundation to the basic principles and application of microprocessors(更多)

ISBN: (纸本)9780198066477

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来源：畅想之星图书光盘版（南... 评论

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2016年第1期5卷 51-69页

作者： Ravindra Shende Gourav Gupta Ganesh Patel senthil kumar Department of Radiation Oncology Capitol Hospital Jalandhar India Department of Radiation Oncology Chirayu Medical College & Hospital Bhopal India

Motive of the study is to present quantitative and qualitative analysis and comparison of beam data measurement with FF (flattening filter) and FFF (flattening filter free) beam in a Varian TrueBeamTM Medical Linear Accelerator. Critique of beam characterization and evolution of dosimetric properties for 6 MV, 10 MV, 15 MV FF beam and 6 MVFFF, 10 MVFFF FFF beam has been carried out. We performed the comparison of photon beam data for two standard FF photon energy 6 MV, 10 MV verses 6 MVFFF, and 10 MVFFF FFF beam. Determination and comparison of parameter involved PDD (Percentage depth dose), Depth dose profile, Symmetry, Flatness, Quality index, Relative output factor, Penumbra, Transmission factor, DLG (Dosimetric leaf gap), in addition to degree of Un-flatness and off-axis ratio of FFF beam. Outcomes of presenting study had shown that change of various parameters such as Percentage depth dose curves, Shape of the depth dose profile, Transmission, Value of quality index and significant rise in surface dose for FFF in comparison with FF beam. Differences in the output factor at lower and higher field sizes for FFF beam compared to that of FF beam were found. The maximum output factor deviation between 6 MV and 6 MVFFF was found to be 4.55%, whereas in 10 MV and 10 MVFFF was 5.71%. Beam quality TPR20/10 for FFF beam was found to be lesser in magnitude, 5.42% for 6 MVFFF whereas 4.50% for 10 MVFFF compared to 6 MV and 10 MV FF beam respectively. Jaw transmission and interleaf leakage for FFF beam were found to be lesser than FF beam. Also DLG for FFF beam was found to be lesser in magnitude comparable to that of flattened beam. This study is mainly inclined towards evaluation and comparison of the FF and FFF beam. It has been observed that, the outcome of a commissioning beam data generation fully complies with vendor specification and published literature.

关键词： True Beam Medical Linear Accelerator Commissioning Photon Beam Data Flattening Filter Flattening Filter Free