Simulator for single stage and dual stage hard disk drives

R. Oboe, A. Beghi, P. Capretta, F. C. Soldavini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we describe a simulator for the evaluation of the performance of different control algorithms and strategies, applied to Hard Disk Drives (HDD) with Single Stage (SSA) and Dual Stage Actuators (DSA). In order to perform realistic simulations, each part of the HDD must be described with high level of detail. As for the mechanics, the usual inertia plus resonance model of the Voice Coil Motor (VCM) has been enriched with non-linear friction modeling and, in ease of DSA, with the dynamic coupling between primary and secondary actuator. The non-linear friction model has been tuned on experimental data, using an experimental system presented in the paper. As for the electronics, the VCM driver model is included and quantizations in Position Error Signal (PES) measurement and computation (i.e. finite wordlength calculations) are explicitly considered. Finally, in order to evaluate the tracking performance of different servo-controllers, Repetitive and Non-Repetitive Run Outs (RRO and NRRO) are in cluded, their values obtained from commercial HDDS, with a procedure that is detailed in the paper.

Original languageEnglish
Title of host publicationIEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM
Pages1148-1152
Number of pages5
Volume2
Publication statusPublished - 2001
Event2001 IEEE/ASME International Conference on Advanced Intelligent Mechatronics Proceedings - Como, Italy
Duration: Jul 8 2001Jul 12 2001

Other

Other2001 IEEE/ASME International Conference on Advanced Intelligent Mechatronics Proceedings
CountryItaly
CityComo
Period7/8/017/12/01

Keywords

  • Dual stage actuators
  • Friction modeling
  • Hard disk drives
  • Simulation environment

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Oboe, R., Beghi, A., Capretta, P., & Soldavini, F. C. (2001). Simulator for single stage and dual stage hard disk drives. In IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM (Vol. 2, pp. 1148-1152)