A nonlinear PID servo controller for computer hard disk drives

Muhammad A. Hawwa; Ahmad A. Masoud

doi:10.1109/AMC.2006.1631740

A nonlinear PID servo controller for computer hard disk drives

Muhammad A. Hawwa^*, Ahmad A. Masoud

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

6 Scopus citations

Abstract

A nonlinear PID scheme is proposed as an efficient hard disk drive servo controller, reducing the settling time and lowering the required control effort. The controller is capable of increasing (decreasing) damping effect when the system output is moving away from (towards) the desired track. This is carried out by utilizing a derivative action tuned by a nonlinear function to provide the system with the needed level of damping. Simulation results, including step function response, control signal history, robustness in terms of the influence of a rate limiter, and a disturbance rejection capability are presented.

Original language	English
Pages	672-676
Number of pages	5
DOIs	https://doi.org/10.1109/AMC.2006.1631740
State	Published - 2006

Keywords

Hard disk drive
Micropositioning
Nonlinear control
Servo systems

ASJC Scopus subject areas

Control and Systems Engineering
Modeling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/AMC.2006.1631740

Cite this

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title = "A nonlinear PID servo controller for computer hard disk drives",

abstract = "A nonlinear PID scheme is proposed as an efficient hard disk drive servo controller, reducing the settling time and lowering the required control effort. The controller is capable of increasing (decreasing) damping effect when the system output is moving away from (towards) the desired track. This is carried out by utilizing a derivative action tuned by a nonlinear function to provide the system with the needed level of damping. Simulation results, including step function response, control signal history, robustness in terms of the influence of a rate limiter, and a disturbance rejection capability are presented.",

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AU - Masoud, Ahmad A.

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AB - A nonlinear PID scheme is proposed as an efficient hard disk drive servo controller, reducing the settling time and lowering the required control effort. The controller is capable of increasing (decreasing) damping effect when the system output is moving away from (towards) the desired track. This is carried out by utilizing a derivative action tuned by a nonlinear function to provide the system with the needed level of damping. Simulation results, including step function response, control signal history, robustness in terms of the influence of a rate limiter, and a disturbance rejection capability are presented.

KW - Hard disk drive

KW - Micropositioning

KW - Nonlinear control

KW - Servo systems

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A nonlinear PID servo controller for computer hard disk drives

Abstract

Keywords

ASJC Scopus subject areas

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