Implementation of a Servo Positioning System on Spin Stand

Wai Ee Wong, Lu Feng, Guoxiao Guo, Weichun Ye, Abdullah Al-Mamun

Research output: Contribution to conferencePaperpeer-review

9 Scopus citations


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 languageEnglish (US)
Number of pages6
StatePublished - 2003
Externally publishedYes
EventThe 29th Annual Conference of the IEEE Industrial Electronics Society - Roanoke, VA, United States
Duration: Nov 2 2003Nov 6 2003


ConferenceThe 29th Annual Conference of the IEEE Industrial Electronics Society
Country/TerritoryUnited States
CityRoanoke, VA


  • 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


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