If we are speaking English about aircraft, then to augment control means to increase it - not necessarily in force, authority, or surface displacement; but in stability, precision, aid toward certain tasks, etc. (including when displacement is decreased compared to the same input without augmentation). Think "Stability Augmentation System." In short, any FBW control law other than direct, is augmented control.
Last edited by Vessbot; 28th June 2021 at 22:17.