改变电压或是接地板与石墨层之间的距离都能改变传导率，“就像调节旋钮一样”，Engheta说。
Varying the voltage or the distance between the ground plate and the graphene alters the conductivity, "just like tuning a knob," Engheta said.
比较电压偏差及其变化率，查询模糊控制表，调节逆变脉宽，可实现电压及电流的理想控制。
According as compare of voltage deviation and its variable ratio, optimal control of voltage and current is realized with querying fuzzy control sheet and adjusting adverse variable pulse width.
重点分析了整流器和逆变器的协调控制策略，始终保持SPWM高调制度，达到励磁电压调节的快速响应和高分辨率。
The concerted control strategy of rectifier and inverter is analyzed to keep high modulation degree of SPWM, which achieves quick response and high resolution of excitation voltage regulation.
电流电压边续可调，调节范围宽，负载持续率高，可连续焊接。
Contimuously adjustable current and voltage, wide adjustment range, high duty cycle, continuous welding.
在此基础上，根据电梯起停频繁的特点，利用直流母线电压变化率推导出起动时刻理想初始参数和在输入功率变化时的前馈调节量，提高了系统的快速性。
On this foundation, in view of features that the elevator starts and stops frequently, the ideal starting time parameter and the value of feed forward adjustment when input power .
在此基础上，根据电梯起停频繁的特点，利用直流母线电压变化率推导出起动时刻理想初始参数和在输入功率变化时的前馈调节量，提高了系统的快速性。
On this foundation, in view of features that the elevator starts and stops frequently, the ideal starting time parameter and the value of feed forward adjustment when input power .
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