space-division switching

Sample time staggered space vector modulation ( STS-SVM) technique is a novel switching modulated strategy, which can acquire much high equivalent switching frequency at fairly lower device switching frequency and have excellent harmonic characteristics.

错时采样空间矢量调制是一种新型的开关调制策略，能够在较低的器件开关频率下实现较高等效开关频率的效果，具有良好的谐波特性。

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This dissertation propose two methods of Bi-directional DC-DC converter modeling and analysis, which are named as Modified State Space Averaged method ( MSSA) and novel Modified Switching signal Flow Graph method ( MSFG), and found the basic framework of the system analysis and design theory.

提出了双向DC-DC变换器的两种建模和分析方法：修正状态空间平均方法MSSA和新颖的开关信号流图统一建模与分析方法MSFG，建立了较完善的基础分析和系统设计理论体系。

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A Quick Algorithm for Diagnosing Space-Division Digital Switching Network

空分数字交换网络的快速故障诊断算法

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In this paper, a quick and practical fault diagnosing algorithm for the Space-Division digital switching network of SPC switching system is proposed.

本文针对程控数字交换机中一类典型的空分数字交换网络，提出了一个快速、实用的故障诊断算法。

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The instantaneous corresponding relationship between the switching functions of MC and its equivalent AC DC AC topology with the limiting conditions is deduced, so that the PWM strategy of MC can be synthesized on the basis of space vector modulation of input phase currents and output line voltages.

在输入相电流空间矢量调制和输出线电压空间矢量调制的基础上，根据开关函数的瞬时对应关系及其限定条件，综合出MC的PWM控制策略。

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Based on the analysis, three single-port 1-dimension 5-element pattern reconfigurable Yagi patch antennas are designed. By switching the states of the parasitic elements, the radiation beams can scan in the E-plane in the upper space.

在此基础上，设计了三个单端口馈电的方向图可重构五元微带八木天线，通过开关调节寄生贴片的状态，可使天线在E面上半空间实现波束连续扫描。

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At the same time, space vector groups are optimized, the optimized SVPWM can guarantee output performance of converter does not fall when switching frequency properly decrease.

采用优化后的开关矢量，可以在减小器件开关次数的情况下，仍能保证变频器输出性能。

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A Space-Division Switching Experiment System for the Optical Fiber Broadband Integrated Services Digital Network

一种可用于光纤宽带综合业务网的光电空分交换实验系统

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