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Mechatronics of Hard Disk Drives: RISE Feedback Track Following Control of a R/W Head

Abstract : This chapter addresses design challenges associated with a servo system of a Hard Disc Drive (HDD). A PRISE -NN control approach is proposed. The main objective of this novel controller is to enhance the track following in a Hard Disc Drive. Indeed, PRISE -NN approach involves an optimal gain selection, in a RISE-NN controller. Taking advantage of the prediction feature, the controller is able to anticipate the future behavior of the system. Consequently, it can easily handle various constraints that may be imposed on its variables. Furthermore, the boundedness of the closed-loop signals as well as the convergence of the tracking error to zero are ensured. Comprehensive comparison between the classical RISE-NN and PRISE -NN are provided through numerical simulations in different operating conditions. It is shown that PRISE -NN can maintain a good control performance in nominal case and in the presence of external disturbances. Besides, the controller is also robust towards uncertainties on the system parameters.
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Submitted on : Thursday, October 11, 2018 - 6:51:53 PM
Last modification on : Friday, October 22, 2021 - 3:07:22 PM
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Manel Taktak-Meziou, Ahmed Chemori, Jawhar Ghommam, Nabil Derbel. Mechatronics of Hard Disk Drives: RISE Feedback Track Following Control of a R/W Head. Mechatronics: Principles, Technologies and Applications, Nova Science Publishers, Inc., 2015, 978-1-63482-854-3. ⟨lirmm-01893919⟩



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