Frequency domain analysis for feedback-assisted iterative learning control

Stability and convergence of the feedback-assisted iterative learning control (FBAILC) was analyzed for the frequency domain, compared with the pure feedback control (FBC), and proposed the equivalent FBC with FBAILC. Furthermore, the iterative learning action of previous bias errors was strengthened to a given controlled plant. Feedback control action had to be reduced so that the overall magnitude was unvarying, therefore, the restrained action for the current disturbance would be weakened. The proposed method was demonstrated by simulation results.