发布求助
文献互助 智能选刊 最新文献

2009 Asia-Pacific Magnetic Recording Conference最新文献

筛选
英文 中文
Swaging force control in drive resonance response 驱动共振响应中的挤压力控制
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925409
A. Jiao, Zhiyong Liu, L. Pan, Ming Ying
{"title":"Swaging force control in drive resonance response","authors":"A. Jiao, Zhiyong Liu, L. Pan, Ming Ying","doi":"10.1109/APMRC.2009.4925409","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925409","url":null,"abstract":"A typical resonance problem caused by the low swaging force was studied. With investigation on the deformation of the arm, the baseplate and the ball, theoretical model was built to estimate the relationship between the ball size, the degree of plastic deformation of baseplate as well as the swaging force. Experiment based on the results of the model indicated that the ball size introducing a 15% deformation is preferred to provide the an enhanced resonance performance.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134253512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Optimal arm configuration to reduce arm bending resonance-induced off-track in a hard disk drive 优化手臂配置，以减少手臂弯曲共振引起的偏离轨道在硬盘驱动器
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925355
Woo-Sung Kim, Yong-Han Song, W. Kim, Chulwoo Lee
{"title":"Optimal arm configuration to reduce arm bending resonance-induced off-track in a hard disk drive","authors":"Woo-Sung Kim, Yong-Han Song, W. Kim, Chulwoo Lee","doi":"10.1109/APMRC.2009.4925355","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925355","url":null,"abstract":"In order to reduce the off-track due to the arm bending mode, whose effect is considerable in a high capacity drive, an arm configuration with maximum arm bending stiffness should be considered. The objective of this work is to find the optimal arm configuration that maximizes the arm bending stiffness subject to the constraint imposed on the moment of inertia of the arm. Herein, the problem of finding the optimal arm configuration maximizing the arm bending stiffness is formulated as a topology optimization for eigenvalue maximization problem. By applying this method, an arm configuration having two balance holes instead of a single balance hole was obtained. Finally, the efficacy of the optimized arm is verified by measuring the position error signal (PES) of actual sample drives; when the optimized arm was used, the PES was reduced by 25%.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130229527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic characteristics of a HDD spindle system due to imperfect roundness of shaft 轴不完全圆度对HDD主轴系统动态特性的影响
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925406
G. Sang, K. Koak, H. W. Kim, K. Jung
{"title":"Dynamic characteristics of a HDD spindle system due to imperfect roundness of shaft","authors":"G. Sang, K. Koak, H. W. Kim, K. Jung","doi":"10.1109/APMRC.2009.4925406","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925406","url":null,"abstract":"This research proposes a modified Reynolds equation for the coupled journal and thrust FDBs to include the variable film thickness due to the imperfect roundness of a rotating shaft. Finite element method is used to solve the Reynolds equation to determine pressure, reaction force and friction torque. The dynamic behavior of a HDD spindle system is determined by solving the equations of a motion in six degrees of freedom with the Runge-Kutta method. This research shows that the imperfect roundness of the shaft increases the nonlinearity of FDBs. It generates the harmonics of the bearing reaction force and the displacement of the HDD spindle system which correspond to groove number ±1 even in the case of stationary grooved FDB.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132521971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The road to HAMR 通往HAMR之路
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925388
W. Challener, C. Peng, A. Itagi, D. Karns, Y. Peng, X. Yang, X. Zhu, N. Gokemeijer, Y. Hsia, G. Ju, R. Rottmayer, M. Seigler, E. Gage
{"title":"The road to HAMR","authors":"W. Challener, C. Peng, A. Itagi, D. Karns, Y. Peng, X. Yang, X. Zhu, N. Gokemeijer, Y. Hsia, G. Ju, R. Rottmayer, M. Seigler, E. Gage","doi":"10.1109/APMRC.2009.4925388","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925388","url":null,"abstract":"Heat assisted magnetic recording (HAMR) was initially proposed in the 1990's to achieve storage densities not limited by superparamagnetism. The key to HAMR has been to find an efficient near field transducer that can operate with a nearby magnetic recording pole. An integrated HAMR head has now been demonstrated which can record at a track width of 50 nm and an areal density of ∼240 Gb/in2 on high coercivity FePt media.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134076155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Simulation of PES degradation due to operational vibration for hard disk drives in storage server box 存储服务器盒中硬盘驱动器运行振动引起的PES退化模拟
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925373
T. Eguchi
{"title":"Simulation of PES degradation due to operational vibration for hard disk drives in storage server box","authors":"T. Eguchi","doi":"10.1109/APMRC.2009.4925373","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925373","url":null,"abstract":"This paper presents a method to simulate position error signal (PES) degradation due to operational vibration of hard disk drives in a storage server box. The drive model is based on a component-mode synthesis method and the operational vibration model is newly added in the model. Comparison between simulations and experiments using a network attached storage (NAS) box with six SCSI drives showed good agreement. Moreover, component analysis of the computed PES degradation indicated that the rocking vibration of the rotating part caused by the rotational vibration about the axis along the short side of the drive was dominant.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114584750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three dimensional finite element model for transient temperature prediction in hard disk drive 硬盘驱动器瞬态温度预测的三维有限元模型
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925358
C. Tan, J. Yang, J. Mou, E. Ong
{"title":"Three dimensional finite element model for transient temperature prediction in hard disk drive","authors":"C. Tan, J. Yang, J. Mou, E. Ong","doi":"10.1109/APMRC.2009.4925358","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925358","url":null,"abstract":"Hard disk drive (HDD) is often subjected to transient temperature during frequent seeking or due to the change of environmental conditions that causes HDD reliability problems. This paper presents a three dimensional (3D) finite element modelling technique that can be used to predict the transient temperatures of the HDD when it subjected to transient temperature during frequent seeking or due to the change of environmental conditions.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115310652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Tribocurrent and its application in study of slider-lubricant interaction 摩擦电流及其在滑块-润滑剂相互作用研究中的应用
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925383
Y. Man, Bo Liu, Yansheng Ma, S. Sinha, S. Lim
{"title":"Tribocurrent and its application in study of slider-lubricant interaction","authors":"Y. Man, Bo Liu, Yansheng Ma, S. Sinha, S. Lim","doi":"10.1109/APMRC.2009.4925383","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925383","url":null,"abstract":"Tribocurrent phenomenon is one of important effects associated with intermittent slider disk interaction. By simulating the interaction with a conductive AFM probe and measuring the induced current simultaneously using a conductive AFM (c-AFM), some critical points, which divide the probe sample interaction into probe-disk, probe-lubricant and non-contact, can be observed. Similar phenomena were also observed when flying a TFC slider over a specially prepared disk. This proposed technique might be applied to ascertain the dynamic interaction exactly between the slider and the lubricant, which would be the critical issue for accurately studying of “fly- and lubricant-contact recording” approaches in which the slider will be in continuous contact with the lubricant.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114917308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nano/micro-reological characteristics of polymeric lubricant for hard disk drive 硬盘驱动器用聚合物润滑剂的纳米/微流变特性
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925359
P. Chung, Q. Guo, M. Jhon, H. Choi
{"title":"Nano/micro-reological characteristics of polymeric lubricant for hard disk drive","authors":"P. Chung, Q. Guo, M. Jhon, H. Choi","doi":"10.1109/APMRC.2009.4925359","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925359","url":null,"abstract":"Rheological properties of shear viscosity and dynamic moduli of perfluoropolyether (PFPE) with different molecular weights and end group functionalities were measured. Molecular simulation of non-equilibrium molecular dynamics (NEMD) was also performed to provide a molecular visualization tool to predict shear viscosity, which reveals a strong dependence on temperature and PFPE molecular architecture.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127363592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fundamental understanding of vapor lubrication in hard disk drive 对硬盘蒸汽润滑有基本的了解
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925385
Y.S. Ma, B. Liu
{"title":"Fundamental understanding of vapor lubrication in hard disk drive","authors":"Y.S. Ma, B. Liu","doi":"10.1109/APMRC.2009.4925385","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925385","url":null,"abstract":"It is proposed to overcome lube depletion problem in future hard disk drives by using vapor lubrication. The lube film formation process on disk surface in vapor lubrication is studied theoretically based on fundamental adsorption and desorption theories. The controlling parameters of lube film thickness and film formation time are identified. It is found that the lube film thickness is controlled mainly by lube vapor pressure and molecular weight. The film formation time can be shortened by using low molecular weight lube and high temperature lube vapor.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126963410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal magnet shape design for wideband magnetic bias torque in a hard disk drive 硬盘驱动器中宽带偏磁扭矩的最佳磁体形状设计
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925354
Woo-chul Kim, Byung-Soo Kim, W. Kim, Chulwoo Lee
{"title":"Optimal magnet shape design for wideband magnetic bias torque in a hard disk drive","authors":"Woo-chul Kim, Byung-Soo Kim, W. Kim, Chulwoo Lee","doi":"10.1109/APMRC.2009.4925354","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925354","url":null,"abstract":"In order to prevent the swing arm parked on the ramp from rotating due to a rotary shock, a wideband magnetic bias torque is generated on a retract pin. This paper presents the optimal magnet shape to generate a wideband magnetic bias torque. To find the optimal magnet shape, the standard shape optimization is employed. The physics behind why the optimized shape of the magnet yielded better performance is briefly explained using numerical simulation. To verify the effectiveness of the optimized magnet, the actual experiment was conducted. Experimental result shows that the optimized magnet shape generates a wideband magnetic bias torque while maintaining the maximum magnetic bias torque compared to a nominal magnet shape.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122603640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信