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dc.titleImproved performance of hard disk drive servomechanism using digital multirate control
dc.contributor.authorTHAMBIRAJAH SUTHASUN
dc.identifier.citationTHAMBIRAJAH SUTHASUN (2004-02-19). Improved performance of hard disk drive servomechanism using digital multirate control. ScholarBank@NUS Repository.
dc.description.abstractThe main objective of the research is to study the advantages achieved through the use of a multirate control in hard disk drive servomechanism, and to design a multirate controller for the systems. Reduced cost plays an important role to keep the manufacture competitive. Compensator of low complexity is advantageous for failure anaylsis. In particular, the thesis introduces number of newly proposed techniques for designing low order and efficient controllers for multirate systems :- 1. Single input single output approach for multirate design, 2. Robust feedforward controller for systems with multiple flexible modes, 3. Partial estimation approach for dual input single output systems and 4. Multirate control for dual stage actuated systems. Simulation and experimental results show that proposed multirate control and compensators perform better for both single-actuated and dual actuated systems.
dc.subjectHard disk drive, multirate , resonance, dual stage actuator, Aliasing, multiple modes
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.supervisorABDULLAH AL MAMUN
dc.description.degreeconferredDOCTOR OF PHILOSOPHY
Appears in Collections:Ph.D Theses (Open)

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