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本文根据平面电路理论,应用Green函数的本征函数展开法,导出了多金属插片立体平面电路型带通滤波器的多模阻抗公式,并采用了多模传输矩阵技术,对立体平面电路型带通滤波器进行了优化设计,并试制了样品。由于算法精确,所制样品的实验结果与理论值吻合良好。 相似文献
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QNX系统下PXI多功能数据采集卡驱动程序开发 总被引:3,自引:0,他引:3
介绍QNX6. 20系统下设备资源管理器的运行机理和体系系统。结合PXI总线设备的体系结构,采用三级分离的方式开发PXI多功能采集卡的驱动程序。具体分析应用程序级和硬件驱动级驱动函数的开发,重点阐述系统调用级驱动函数的开发。 相似文献
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本文根据平面电路理论,采用多模传输矩阵与模匹配的计算方法,对介质谐振器型分波器进行了优化设计,并且试制了样品,所得实验值与优化结果基本吻合。由于这种分波器为平面电路型,具有结构简单、成本低、性能优良的优点。 相似文献
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依据速调管耗散能量的安全值与最大故障电流、电弧电压和电源供电切断时间的关系,介绍了EAST上2.45 G/2 MW低杂波速调管过流保护系统的设计。采用过电流电路触发和引燃管旁路速调管电流的方法来实时保护速调管。经自检测试和在EAST放电实验中的应用表明,该系统能在50μs内完成保护,完全满足设计需求。 相似文献
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本文是在文献[1]的基础上对网络模拟法所作的进一步研究,文中导出了平面电路端口处的模导纳计算公式,从而便于考虑高次模对平面电路频率特性的影响,以提高计算精度,使网络模拟法在平面电路中的应用更加完善。 相似文献
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Ramp-up experiments by means of lower hydrid wave on HT-7 superconducting tokamak have been performed and analyzed.A ramp-up rate of over 300kA/s is obtained and a conversion efficiency of over 10% has been achieved during the ramp-up phases.The study of the dependence of conversion efficiency on plasma density shows that the conversion efficiency is affected by the driven current,which is mainly dominated by the competition of impurity concentration with wave accessibility condition.In addition,the effect of current profile may play an important role in determining the conversion efficiency. 相似文献
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徐旵东 王晓洁 刘甫坤 张健 黄懿赟 单家方 吴大俊 胡怀传 李波 李妙辉 杨永 冯建强 徐伟业 汤允迎 韦维 徐立清 刘永 赵海林 J.LOHR Y.A.GORELOV J.P.ANDERSON 马文东 吴则革 王健 张立元 郭斐 孙浩章 闫新胜 EAST Team 《等离子体科学和技术》2016,(4):442-448
A long pulse electron cyclotron resonance heating(ECRH)system has been developed to meet the requirements of steady-state operation for the EAST superconducting tokamak,and the first EC wave was successfully injected into plasma during the 2015 spring campaign.The system is mainly composed of four 140 GHz gyrotron systems,4 ITER-Like transmission lines,4 independent channel launchers and corresponding power supplies,a water cooling,control &inter-lock system etc.Each gyrotron is expected to deliver a maximum power of 1 MW and be operated at 100-1000 s pulse lengths.The No.1 and No.2 gyrotron systems have been installed.In the initial commissioning,a series of parameters of 1 MW 1 s,900 k W 10 s,800 k W 95 s and650 k W 753 s have been demonstrated successfully on the No.1 gyrotron system based on calorimetric dummy load measurements.Significant plasma heating and MHD instability suppression effects were observed in EAST experiments.In addition,high confinement(H-mode)discharges triggered by ECRH were obtained. 相似文献