The traditional direct torque control system has existed large torque fluctuation, poor performance of low speed region, inconstant switch frequency, etc.

传统的直接转矩控制存在着转矩脉动大，低速性能差、开关频率不固定等问题。

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The switch is characterized by simple structure, polarization-independence, low optic insertion loss and interchannel crosstalk, fast response speed, small in size and low drive voltage, etc.

这种磁光开关具有结构紧凑、器件体积小、偏振无关性、响应速度快、驱动电压低和串扰小等优点；

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SOG material, as traditional SOI material, has much excellent electronics property, for example, SOG circuit has the advantage of high switch speed, high density, low voltage, low power and so on.

SOG材料与传统SOI材料一样，拥有许多优良的电学性能，例如SOG电路具有高开关速度、高密度、低压和低功耗等优点。

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