Takenori Atsumi
Chiba Institute of Technology
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Publication
Featured researches published by Takenori Atsumi.
advances in computing and communications | 2016
Takenori Atsumi
In a head-positioning system of hard disk drives (HDDs), unobservable oscillations in a repeatable run-out (RRO) may lead to destruction of user data. Therefore, this paper presents an estimation method for the unobservable oscillation in the RRO for the head-positioning control systems. This study is based on a relationship between an oscillation frequency and a sampling frequency of the head-positioning system. To estimate amounts of the unobservable oscillations in RROs, unobservable magnitudes are defined by using its maximum and root-mean-square values. These magnitudes show that a sampling frequency is an important parameter which designers must choose carefully so as not to destroy the users data by the unobservable RROs. To show a usage of the proposed method, unobservable magnitudes of RROs were analyzed for the head-positioning control system in a 7200-rpm HDD.
IEEJ journal of industry applications | 2016
Takenori Atsumi
Journal of Advanced Mechanical Design Systems and Manufacturing | 2016
Takenori Atsumi
Mechatronics | 2017
Takenori Atsumi
IEEJ journal of industry applications | 2017
Takenori Atsumi
international conference on industrial technology | 2018
Takenori Atsumi
international conference on industrial technology | 2018
Jun Ito; Takenori Atsumi
The Proceedings of the Conference on Information, Intelligence and Precision Equipment : IIP | 2018
Jun Ito; Takenori Atsumi
Journal of Advanced Mechanical Design Systems and Manufacturing | 2018
Takenori Atsumi
The Proceedings of the Conference on Information, Intelligence and Precision Equipment : IIP | 2017
Jun Ito; Takenori Atsumi