Robust second-order <i>PD</i> α type iterative learning control for a class of uncertain fractional order singular systems

Abstract

This paper presents a robust second-order feedback [Formula: see text] type iterative learning control (ILC) for a class of uncertain fractional-order singular systems. Sufficient conditions for the robust convergence of the proposed [Formula: see text] type of learning control algorithm, with respect to the bounded external disturbance and uncertainity, have been established and specified for time domain. Finally, simulation examples are presented to illustrate the performance of the proposed fractional order ILC.