Department of Control Engineering, Naval Aeronautical University, Yantai 264001, Shandong, China;
Department of Electrical and Electronic Engineering, Yantai Nanshan University, Yantai 265713, Shandong, China;
Shandong Nanshan International Flight Co., Ltd., Yantai 265713, Shandong, China;
adaptive iterative learning control (AILC); time-varying nonlinear systems; output tracking; observer; filter;