PC-based position error signal generation and servo system for a spinstand

Wai Ee Wong; Lu Feng; Zhimin He; Jun Liu; Cheng Mun Kan; Guoxiao Guo

doi:10.1109/TMAG.2005.856304

PC-based position error signal generation and servo system for a spinstand

Wai Ee Wong, Lu Feng, Zhimin He, Jun Liu, Cheng Mun Kan, Guoxiao Guo

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

We describe a high-performance servo control system for enhancement of spinstand servo performance. This PC-based system uses a multifunction I/O card for controller output and a high-speed digitizer card capable of sampling the frequency-encoded servo pattern at 500 MS/s. The PC, running under the Linux operating system, uses the Goertzel algorithm decoding scheme to calculate the position error signal (PES) at a 15-kHz update rate for feedback control. The control signal drives a custom-made lead zirconate titanate (PZT) actuator, which moves the suspension and thus the read/write head. A proportional and integral (PI) type servo controller supports a 1.1-kHz servo bandwidth, producing a 21.9% improvement of the positioning accuracy of the spinstand.

Original language	English (US)
Pages (from-to)	4315-4322
Number of pages	8
Journal	IEEE Transactions on Magnetics
Volume	41
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2005.856304
State	Published - Nov 2005
Externally published	Yes

Keywords

Digital control system
Position error signal
Servo control
Spinstand
Track misregistration

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2005.856304

Cite this

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title = "PC-based position error signal generation and servo system for a spinstand",

abstract = "We describe a high-performance servo control system for enhancement of spinstand servo performance. This PC-based system uses a multifunction I/O card for controller output and a high-speed digitizer card capable of sampling the frequency-encoded servo pattern at 500 MS/s. The PC, running under the Linux operating system, uses the Goertzel algorithm decoding scheme to calculate the position error signal (PES) at a 15-kHz update rate for feedback control. The control signal drives a custom-made lead zirconate titanate (PZT) actuator, which moves the suspension and thus the read/write head. A proportional and integral (PI) type servo controller supports a 1.1-kHz servo bandwidth, producing a 21.9% improvement of the positioning accuracy of the spinstand.",

keywords = "Digital control system, Position error signal, Servo control, Spinstand, Track misregistration",

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AU - Feng, Lu

AU - He, Zhimin

AU - Liu, Jun

AU - Kan, Cheng Mun

AU - Guo, Guoxiao

PY - 2005/11

Y1 - 2005/11

N2 - We describe a high-performance servo control system for enhancement of spinstand servo performance. This PC-based system uses a multifunction I/O card for controller output and a high-speed digitizer card capable of sampling the frequency-encoded servo pattern at 500 MS/s. The PC, running under the Linux operating system, uses the Goertzel algorithm decoding scheme to calculate the position error signal (PES) at a 15-kHz update rate for feedback control. The control signal drives a custom-made lead zirconate titanate (PZT) actuator, which moves the suspension and thus the read/write head. A proportional and integral (PI) type servo controller supports a 1.1-kHz servo bandwidth, producing a 21.9% improvement of the positioning accuracy of the spinstand.

AB - We describe a high-performance servo control system for enhancement of spinstand servo performance. This PC-based system uses a multifunction I/O card for controller output and a high-speed digitizer card capable of sampling the frequency-encoded servo pattern at 500 MS/s. The PC, running under the Linux operating system, uses the Goertzel algorithm decoding scheme to calculate the position error signal (PES) at a 15-kHz update rate for feedback control. The control signal drives a custom-made lead zirconate titanate (PZT) actuator, which moves the suspension and thus the read/write head. A proportional and integral (PI) type servo controller supports a 1.1-kHz servo bandwidth, producing a 21.9% improvement of the positioning accuracy of the spinstand.

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KW - Position error signal

KW - Servo control

KW - Spinstand

KW - Track misregistration

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PC-based position error signal generation and servo system for a spinstand

Abstract

Keywords

ASJC Scopus subject areas

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