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Fast sliding-mode seek control of hard disk servos

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Abstract

A nonlinear controller is presented for both seeking control and following control in hard disk servos. Usually, a switching mechanism is used for mode transit from seeking to following. As a result, the seeking time and settling time are lengthened very much, especially for short seeks. Based on time-varying sliding surfaces, the proposed nonlinear control approach eliminates the switching mechanism and thus realizes the smooth mode transit. Its effectiveness is demonstrated in simulation and experiments. In particular, the seek time is improved up to 50%.

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Authors and Affiliations

  1. Centre for Mechanics of Micro-Systems, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore, 639798

    J. Zhou

  2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798

    Y. Wang

Authors
  1. J. Zhou
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  2. Y. Wang
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Correspondence to J. Zhou.

Additional information

Paper presented at the 13th Annual Symposium on Information Storage and Processing Systems, Santa Clara, CA, USA, 17–18 June, 2002

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Zhou, J., Wang, Y. Fast sliding-mode seek control of hard disk servos. Microsystem Technologies 10, 35–41 (2003). https://doi.org/10.1007/s00542-003-0295-x

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  • DOI: https://doi.org/10.1007/s00542-003-0295-x

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