A kind of electromagnetic actuation optical switch is designed based on the high performance of polyimide (PI) in mechanical character, insulation and heat-resistant.
利用聚酰亚胺(PI)优良的机械、绝缘、耐热等性能，设计出基于PI膜的磁控光开关。
Constant voltage characteristic was also designed according to the character of CO2 twin-wire welding process, and software PI control arithmetic was confirmed.
本研究还根据CO2双丝焊接的特点设计了恒压外特性，并确定了软件PI控制算法。
According to the character non-linear of the fuel cell power plant inverter system, the linear treatment is taken and digital PI control of the output waveform is proposed.
根据燃料电池电站功率逆变系统非线性的特点，进行线性化处理，采用数字化PI控制其输出波形。
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