Abstract
To achieve an ultra-high track density in magnetic recording systems, high precision and efficient servomechanism is needed to position the head on the desired track. In this paper, a multiple-frequency servo encoding and modified discrete Fourier transform (DFT)-based decoding scheme is used to detect the position error signal (PES) as the feedback signal for reader servo control on a spin stand. A personal computer (PC) is used to perform the DFT and generate the PES at 8 kHz speed. A modified PZT head cartridge base is used as the positioning device on the spin stand. A closed-loop bandwidth of 300 Hz has been achieved, resulting in an 18% improvement of the tracking accuracy.
| Original language | English (US) |
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| Pages | 2114-2119 |
| Number of pages | 6 |
| State | Published - 2003 |
| Externally published | Yes |
| Event | The 29th Annual Conference of the IEEE Industrial Electronics Society - Roanoke, VA, United States Duration: Nov 2 2003 → Nov 6 2003 |
Conference
| Conference | The 29th Annual Conference of the IEEE Industrial Electronics Society |
|---|---|
| Country/Territory | United States |
| City | Roanoke, VA |
| Period | 11/2/03 → 11/6/03 |
Keywords
- Magnetic recording system
- Position error signals (PES)
- Real-time control
- Servo system
- Spin stand
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering