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三种同轴感应线圈发射器的加速特性研究
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作者 赵科义 张千帆 +1 位作者 李治源 程树康 《电气技术》 2010年第S1期42-45,53,共5页
对于同轴感应线圈发射器来说,根据驱动线圈和电枢的位置关系,可将其分为三类:一是外驱动型结构,二是内驱动型结构;三是内-外驱动型结构。外驱动型同轴感应线圈发射器的驱动线圈在电枢的外面,内驱动型同轴感应线圈发射器的驱动线圈在电... 对于同轴感应线圈发射器来说,根据驱动线圈和电枢的位置关系,可将其分为三类:一是外驱动型结构,二是内驱动型结构;三是内-外驱动型结构。外驱动型同轴感应线圈发射器的驱动线圈在电枢的外面,内驱动型同轴感应线圈发射器的驱动线圈在电枢的内部,而内-外驱动型同轴感应线圈发射器有内、外两个驱动线圈,且内、外驱动线圈分别处于电枢的内侧及外侧。目前,人们只注重了外驱动型同轴感应线圈发射器的研究,忽视了内驱动型和内-外驱动型同轴感应线圈发射器的研究。本文首先分析了这三种结构类型的同轴感应线圈发射器的特点,然后利用有限元分析方法研究了它们的加速特性。研究表明:内驱动型同轴感应线圈发射器的加速特性最差,但是它适合加速大体积、大质量的载荷;外驱动型同轴感应线圈发射器具有最好的加速特性;内-外驱动型同轴感应线圈发射器,特别是磁场重接式内-外驱动型同轴感应线圈发射器也具有较好的加速特性,且电枢内涡流分布相对更均匀,但是它的结构相对复杂,不利于设计与实现。 展开更多
关键词 同轴型感应线圈发射器 驱动 驱动 内-外驱动 加速特性
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Design and realization of security physical isolation system 被引量:5
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作者 陈幼平 尹勇 +1 位作者 李方敏 周祖德 《Journal of Southeast University(English Edition)》 EI CAS 2005年第1期11-15,共5页
A physical isolation system based on PCI (peripheral component interconnect),embedded with intelligence card technology, strong identity authentication technology and securityaudit, etc., is introduced. The system can... A physical isolation system based on PCI (peripheral component interconnect),embedded with intelligence card technology, strong identity authentication technology and securityaudit, etc., is introduced. The system can physically isolate the internaland external networks. Thehardware of the system, including PCI interface control circuits, network interface circuits andlogic control circuits, is designed to automatically adapt its operation speed and mode to thenetwork and securely isolate the internal and external networks; the software of the system,including the security strategy management module, the security audit module, the database recordexchanging module, the file exchanging module and the mail exchanging module, is designed toefficiently exchange and manage the data transference between the internal and external networks.Also the driver of the system is implemented with Windows driver development kits (DDK) based onNetwork Driver Interface Specification (NDIS). The prototype ofthe system developed has beenemployed in the Police Fire Protection Bureau of Hubei Province, which performs consistently andefficiently. The technological cruxes discussed have practical values for related subjects. 展开更多
关键词 physical isolation internal and external networks PCI (peripheral componentinterconnect) bus system management software DRIVER
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