Automatic stroke measurement on multi disk writer | |
| Author | Chaweng Sapapporn |
| Subject(s) | Signal processing Assembly-line methods -- Automation Hard disks (Computer science) |
| Note | A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Science in Mechatronics |
| Publisher | Asian Institute of Technology |
| Abstract | This thesis presents a technique to measure the stroke of spiral signal in writing reference signal information during a multi-disk writing (MDW) seeder operation, which is a servo writing process in the self-servo writing method. The coefficient of variance monitoring and ramp detection techniques are designed and programmed in order to automatically control a magnetic head arm assembly in a high precision scale. The start and the end of spiral signal are used to confirm the stroke range. The ramp detection track is implemented to measure the spiral track shift. |
| Year | 2014 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Microelectronics (ME) |
| Chairperson(s) | Mongkol Ekpanyapong |
| Examination Committee(s) | Bohez, Erik L. J.;Boonchai Chinpraditsuk; |
| Scholarship Donor(s) | Western Digital;AIT Fellowship |
| Degree | Thesis (M.Sc.) -- Asian Institute of Technology, 2014 |