instantaneous error meaning in English

瞬时误差

One - cycle control technique is conceived to control the duty - ratio d of the switch in real time such that in each cycle the average value of the chopped waveform at the output diode of the switch rectifier is exactly equal or proportioned to the control reference . it can eliminate automatically instantaneous error in every one cycle and the error belonging to the former cycle ca n ' t be brought to next cycle
单周期控制技术的基本思想是控制开关的占空比，在每个周期内强迫开关变量的平均值与控制参量相等或成比例，它能在一个开关周期内自动消除瞬态误差，前一周期的误差不会带到下一周期。