下超调下超调指电压调整器或控制器在应对负荷变化时，电压或频率低于额定的量。
Undershoot Undershoot refers to the amount by which voltage or frequency drops below the nominal value as the voltage regulator or governor responds to changes in load.
采用模糊控制技术，实现了电弧电压或短路频率的控制，提高了焊接质量。
Fuzzy control tests of arc voltage and short-circuit frequency are conducted to improve welding quality.
软加载软加载是指在给发电机组增加或减少负载时要逐渐进行，以减少电压和频率对系统的瞬变影响。
Soft loading Soft loading refers to the ramping of load onto or off of a generator in a gradual fashion for the purpose of minimizing voltage and frequency transients on the system.
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