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Analysis of electrodynamic tether deployment impacting on the attitude of tether and main-satellite

Journal of Beijing Institute of Technology 2016年第S2期25卷 50-55页

作者：苏飞刘静张耀杨旭翟光 National Astronomical Observatories Chinese Academy of Science School of Aerospace Engineering Beijing Institute of Technology

A study on the dynamic characters and stability of the electrodynamic tether(EDT) system during deploying phase is *** dynamics model of the EDT is established with taken the deformation and tension of tether into *** system’s equilibrium conditions are also derived according to second order linear *** the impact of the gravity gradient torque and the impact of the libration and tension variation of the tether,the stability of attitude of main-satellite under different deployment strategies is ***,series numerical simulations are performed:deployments of uniform velocity and uniform acceleration lead to instability of the main-satellite with its attitude viberated;deployment of power index can resist external disturbance effectively with the attitude of the main-satellite rapid *** what conditions the deformation of the tether could be neglected is calculated,which could provide ideas of control and deploy strategies for the EDT system.

关键词： deployment strategies libration and tension variation gravity gradient torque

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Design of Energy Efficient WSN Using a Noble SMOWA Algorithm

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Computers, Materials & Continua 2022年第8期72卷 3585-3600页

作者： Avishek Banerjee Deepak Garg Victor Das Laxminarayan Sahoo Ira Nath Vijayakumar Varadarajan Ketan Kotecha Department of Computer Science and Engineering Bennett UniversityGreater Noida201310India Department of Information Technology Asansol Engineering CollegeAsansol713305India Department of Computer and Information Science Raiganj UniversityRaiganj733134India Department of Computer Science and Engineering JIS College of EngineeringKalyani741235India School of Computer Science and Engineering University of New South WalesSydneyAustralia Symbiosis Centre for Applied Artificial Intelligence Symbiosis International(Deemed University)PuneIndia

In this paper,the establishment of efficientWireless Sensor Network(WSN)networks has been projected to minimize the consumption of energy using a new Self-adaptive Multi-Objective Weighted Approach(SMOWA)algorithm for solving a multi-objective *** Different WSN nodes deployment policies have been proposed and applied in this paper to design an efficientWireless Sensor Network to minimize energy *** that,the cluster head for each cluster has been selected with the help of the duty *** configuring the WSN networks,the SMOWA algorithms have been developed to obtain the minimum energy consumption for the *** minimization,as well as the amount of day-saving,has been calculated for the differentWSNswhich has been configured through different deployment *** major finding of the research paper is to improve the durability of Wireless Sensor Network(i)applying different deployment strategies:(Random,S pattern and nautilus shell pattern),and(ii)using a new Meta-heuristic algorithm(SMOWA Algorithm).In this research,the lifetime of WSN has been increased to a significant *** choose the best result set from all the obtained results set some constraints such as“equivalent distribution”,“number of repetitions”,“maximum amount energy storage by a node”has been set to an allowable range.

关键词： Wireless Sensor Network(WSN) Self-adaptive Multi-Objective Weighted Approach(SMOWA) deployment strategies Meta-heuristicMethods energy minimization duty cycle

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