介绍了以TC787专用集成电路为核心的三相六脉冲晶闸管触发板的设计和调试，对TC787专用集成电路的性能特点、工作原理和使用注意事项也作了简要介绍。

This article describes the design and debugging of three phase and six pulse thyristor trigger board based on TC787. The performance and application information of TC787 are also mentioned.

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设计了以TMS320F240为控制核心的硬件控制平台，包括采样电路、保护电路、六相触发同步等外围电路。

The hardware control system based on TMS320F240 is designed, which includes sampling circuit, protective circuit, phase-compensated circuit and so on.

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介绍了三相步进电机的工作方式，给出了双激励三拍与三相六拍步进电机控制器用GAL电路进行设计的方法。

This paper has introduced the working ways of three_phase stepping motor; mean while, it has provided a method of designing GAL circuit for double tri_beat and three_phase six_beat stepping motor.

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