Steady-state Compensation on SAC and Its Application to a Rotation Control System

Abstract

Because almost strictly positive real (ASPR) condition can be satisfied using the parallel feedforward compensator (PFC), the stable control system is easily designed with simple adaptive control (SAC) method. The augmented system output, in which the PFC is included, converges to the reference model output, and on the other hand, there is the steady-state error between the actual system output and the reference model output because of the PFC. In this study, an SAC law is extended using the null-space and it is applied to a rotation control system.