本文以现代控制理论为基础，选用二次型性能指标设计可控硅直流调速系统。
On the basis of modern control theory, the quadratic performance index was selected to design SCR DC speed-adjusting system.
采用模块电源构成飞机高压直流电气系统的二次电源分布式系统，可提高供电可靠性和供电质量。
It can improve the reliability and quality of the high voltage DC electrical system of airplane to adopt modular power supplies to construct a secondary distributed power system.
直流输电的控制和保护二次系统是国产化的重点，而脉冲发生器是控制和保护系统中的关键技术之一。
The heart of HVDC link is its control and protect system, and my work is focused on firing-pulse generator―an important part in the control and protect system .
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