Application of SAC Extended Using Null-space to a Rotation Control System

Since Almost strictly positive real (ASPR) condition is 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 with the reference model output because of the PFC. In this study, an SAC law is extended using the null-space for controlling a rotation control system.