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Introduction The spin axis of ESG rotor will move alongclosed trajectories periodically after spin up, thetrajectories enclose either the maximum or theminimum principal axis of inertia depending on theinitial conditions, which is classical polhode mo-tion[1-4]. It is necessary to damp the polhode mo-tion to ensure that the spin axis is aligned with therotor maximum principal axis of inertia for ESGsignal readout. Passive damping and active damp-ing are two common schemes to fulfill this pro… 相似文献
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作者对路由器的逻辑体系结构进行了深入分析,指出构成路由器的三大模块是:网络接口模块、搜索引擎模块和协议配置与控制模块;重点分析了路由器体系结构发展过程,对目前的六类体系结构进行了较为详细的分析;指出路由器的结构已由基于软件的共享总线式的特殊计算机逐渐发展威为基于硬件的多总线或交换背板式的交换式的路由器. 相似文献
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