重复控制将“上一次的偏差”储存起来，用于下一次的控制，提高了系统的鲁棒性-Repetitive control of " the last of the deviation" store for the next control, to improve the robustness of the system

实现有源电力滤波器的电流跟踪控制，能够代替传统PI控制策略(Active power filter current tracking control can replace the traditional PI control strategy)