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In EDM, the extremely high thermal power density results in melting and evaporating followed by removal electrode material, forming a discharge crater on electrode surfaces. Thus, during the formation process of discharge crater, there are the three physical forms (including solid, liquid and vapor) of electrode material and the different phase transformation between them simultaneously. In order...
Wireless communication depending on satellite systems constructed by numerous low earth orbit satellites has presented many advantageous traits in space navigations and detections, and has gradually become a dominant developing trend of the mission-driven telecommunication. Based on Flower Constellation design theory, a design method of low earth orbit micro-satellite formations, which are capable...
In this paper we determine and modify the values of the two parameters in the companding transform function proposed previously. The CCDF of the compressed signals is derived and it shows good PAPR reduction ability. BER of the modified scheme is simulated, which shows that when combined with oversampling, the scheme can achieved good BER performance. Power spectrum density of the compressed signals...
Studying the HVDC typical fault-the commutation failure and its protection measures will give some guidance for HVDC engineering, also, it will improve the AC-DC power system safety and reliability with great significance. Based on the analysis of commutation failure of HVDC, the article studies the effect of the commutation failure when the commutation buses have different kinds of AC faults on the...
In this paper, a cooperative game is proposed to perform a fair and efficient resource allocation for the time division multiple access (TDMA) based cooperative communication networks. In the considered system, two selfish user nodes can act as a source as well as a potential relay for each other. A transmission node with energy limitation is willing to seek cooperative relaying only if the data-rate...
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