Phase stabilized design of a hard disk drive servo using the complex lag compensator

William Messner; Roberto Oboe

Phase stabilized design of a hard disk drive servo using the complex lag compensator

William Messner, Roberto Oboe

Istituto di Neuroriabilitazione Motoria San Camillo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper introduces a new technique for the Phase Stabilized Design (PSD) of a HDD servo, based on the use of complex lag compensators. Such compensators have several benefits compared to standard ones and they offer additional degrees of freedom in control design. This paper presents a case study comparing the performance of the PSD using the complex lag compensator with the performance of a PID plus notch filter design, and the performance of a PSD using a real lag compensator. The designs are performed for a realistic model of a disk drive derived from experimental data. The new approach significantly outperforms the other with respect to step response, rejection of disturbance response at the plant input, and rejection of periodic and windage disturbances.

Original language	English
Title of host publication	Proceedings of the American Control Conference
Pages	1165-1170
Number of pages	6
Volume	2
Publication status	Published - 2004
Event	Proceedings of the 2004 American Control Conference (AAC) - Boston, MA, United States Duration: Jun 30 2004 → Jul 2 2004

Other

Other	Proceedings of the 2004 American Control Conference (AAC)
Country	United States
City	Boston, MA
Period	6/30/04 → 7/2/04

ASJC Scopus subject areas

Control and Systems Engineering

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Messner, W., & Oboe, R. (2004). Phase stabilized design of a hard disk drive servo using the complex lag compensator. In Proceedings of the American Control Conference (Vol. 2, pp. 1165-1170)

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AB - This paper introduces a new technique for the Phase Stabilized Design (PSD) of a HDD servo, based on the use of complex lag compensators. Such compensators have several benefits compared to standard ones and they offer additional degrees of freedom in control design. This paper presents a case study comparing the performance of the PSD using the complex lag compensator with the performance of a PID plus notch filter design, and the performance of a PSD using a real lag compensator. The designs are performed for a realistic model of a disk drive derived from experimental data. The new approach significantly outperforms the other with respect to step response, rejection of disturbance response at the plant input, and rejection of periodic and windage disturbances.

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