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7 个结果
  • 简介:TheRFsystemforTESLArequiresacomprehensiveinterlocksystem.Usuallyinterlocksystemsareorganizedinahierarchicalway,Inordertoreacttodifferentfaultconditionsinafastandflexiblemanneranonhierarchicalorganizationseemstobethebettersolution,AttheTESLATestFacility(TTF)atDESYwewillinstallanonhierarchicalinterlocksystemthatisbasedonuserdesgnedreprogrammablegate-arrays(FPGA's)whichincorporateanembeddedmicrocontrollersystem.ThissystemcouldbeusedlaterfortheTESLAlinearcolliderreplacingastrictlyhierarchicaldesign.

  • 标签: 计算机控制 联锁设计 TESLA RF系统
  • 简介:IMPCSRRFGroupcooperatingwithBINPhasfulfilledthefollowingprojects.PCIbasedRFsignalgenerator;PLDcenteredRFstationinterlockandsurveillanceunit;Highfrequencyanalogsignalprocessingunits;CVIandWindowsplatformbasedmonitorandoperationinterface.

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  • 简介:这份报纸在内并且在高速度的Oxy燃料(HVOF)外面象煤气的流动一样分析涂层粒子的行为由使用quasi-one-dimensional分析和数字模拟的热水花枪。在现在的分析的HVOF枪是一个向轴的方向有2.0的设计马赫数字的对称的会聚分叉的嘴。从现在的分析,速度的分布和飞在内并且在HVOF枪外面的涂层粒子的温度被预言。在现在的方法计算的枪的出口的涂层粒子的速度和温度与以前的试验性的结果同意很好。因此,计算的现在的方法被认为为预言HVOF气体和粒子流动有用。关键词可压缩的流动-超声的喷气-热水花-HVOFCLC数字O357.4+2

  • 标签: 可压缩流 超声波射流 热喷射 HVOF
  • 简介:RFpoweramplifiers(PAs)areusuallyconsideredasmemorylessdevicesinmostexistingpredistortiontechniques.Nevertheless,inwidebandcommunicationsystems,PAmemoryeffectscannolongerbeignoredandmemorylesspredistortioncannotlinearizePAseffectively.AfteranalyzingPAmemoryeffects,anovelpredistortionmethodbasedonwaveletnetworks(WNs)isproposedtolinearizewidebandRFpoweramplifiers.Acomplexwaveletnetworkwithtappeddelaylinesisappliedtoconstructthepredistorterandthenacomplexbackpropagationalgorithmisdevelopedtotrainthepredistorterparameters.Thesimulationresultsshowthatcomparedwiththepreviouslypublishedfeed-forwardneuralnetworkpredistortionmethod,theproposedmethodprovidesfasterconvergencerateandbetterperformanceinreducingout-of-bandspectralregrowth.

  • 标签: RF功率放大器 小波网络 前置补偿法 带宽 存储效应