Key points are not available for this paper at this time.
The purpose of this article is to provide a history of control in disk drives for rigid magnetic disks (often called hard disks). It begins with a short general history of disk drives. It then considers the feedback loop and trace the evolution of the individual components. Finally, we will focus on the control system itself, viewed in the context of overall history and the component history.
Abramovitch et al. (Sat,) studied this question.