Sabi̇t di̇sk sürücülerde zaman geci̇kmeli̇ kafa konumlanması i̇çi̇n P ve PI kontrolcü tasarımı

In today's high performance positioning applications, due to stringent design objectives, it is very challenging to cope with input-output time delays. In Hard Disk Drive (HDD) servo system, the information flow between process and the controller is under a time delay. Typical state-space based modern control algorithms are not applicable to such in finite dimensional plants. In this thesis several control design objectives are considered and various types of stabilizing controllers are derived for this in nite dimensional plant. The objective of this thesis is to determine alternative simple (low order) controllers to the previously designed H1 controller and controllers designed from Pade approximations. For this purpose, six di erent P and PI controllers for the unstable in nite dimensional plant are obtained. Comparisons of the controllers with each other are done and advantages of every approach are demonstrated.