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2009 Asia-Pacific Magnetic Recording Conference最新文献

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Minimization of flexible cable settling PES in high TPI HDD via mechatronic integration 通过机电一体化最大限度地减少高TPI硬盘中柔性电缆沉降PES
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925419
J. Chang
{"title":"Minimization of flexible cable settling PES in high TPI HDD via mechatronic integration","authors":"J. Chang","doi":"10.1109/APMRC.2009.4925419","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925419","url":null,"abstract":"This paper presents a modeling and design methodology to reduce and even to eliminate flexible ribbon cable seek-settling induced vibrations in modern high capacity computer disk drives. Optimization is first conducted in obtaining proper cable profiles when the rotary actuator swings across the disk using classical elastica theory with consideration of compliant boundary at its J-block conjunction point with rotary actuator and fixed boundary conditions at bracket. In addition to modal kinetic coupling factor, the cable's vibration modes are projected onto actuator voice coil's excitations to form as a weighted response factor to serve as the cost function in optimization process. It was found through the proposed process that the seek-settling flexible cable vibration can be minimized and even reduced to zero. Additional servo adaptive control format will be also discussed in this paper to totally eliminate the flexible ribbon vibrations in disk drive's seek-settling operations.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"49 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":"116911658","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
Enhanced vibration suppression in HDDs using instrumented suspensions 使用仪器悬架增强hdd的振动抑制
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925377
S. Felix, R. Horowitz
{"title":"Enhanced vibration suppression in HDDs using instrumented suspensions","authors":"S. Felix, R. Horowitz","doi":"10.1109/APMRC.2009.4925377","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925377","url":null,"abstract":"High resolution thin film strains sensors have been successfully integrated into instrumented suspension prototypes, and utilized in an operating experimental disk drive. Realistic plant and disturbance models were obtained from experimental data. Multi-rate, nominal H2 control synthesis was then utilized to investigate closed-loop vibration suppression. Simulations demonstrate improved tracking performance with auxiliary high resolution, high-rate strain sensing.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"48 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":"115028811","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
Numerical investigation of thermal problems in HAMR system HAMR系统热问题的数值研究
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925357
Q.D. Zhang, B. Xu, J. Zhang, N.Y. Liu, G. Chin, K. Sundaravadivelu, E. Ong, D.Y. Li
{"title":"Numerical investigation of thermal problems in HAMR system","authors":"Q.D. Zhang, B. Xu, J. Zhang, N.Y. Liu, G. Chin, K. Sundaravadivelu, E. Ong, D.Y. Li","doi":"10.1109/APMRC.2009.4925357","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925357","url":null,"abstract":"The paper numerically investigated two thermal related problems in heat assisted magnetic recording: the dependence of the recorded mark width on the laser power and the temperature distribution and changes with time in lubricant layer at the condition without or with the heat sink layer. The results show that the mark width increases as the laser power increases and heat sink layer helps to reduce temperature in lubricant layer.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"10 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":"127706252","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: 3
Head disk interface dynamic stability analysis for surfing recording 冲浪记录磁头磁盘接口动态稳定性分析
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925424
Shengkai Yu, Bo Liu, Weidong Zhou, W. Hua, L. Gonzaga
{"title":"Head disk interface dynamic stability analysis for surfing recording","authors":"Shengkai Yu, Bo Liu, Weidong Zhou, W. Hua, L. Gonzaga","doi":"10.1109/APMRC.2009.4925424","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925424","url":null,"abstract":"Fly and lubricant contact, or surfing recording, is one of interface solutions for 5∼10 Tb/in2 of magnetic recording. One of major challenges for surfing schemes comes from how to sustain the dynamic stability of the head disk interface (HDI). This paper explores the mechanism of slider's dynamic stability in surfing on the lubricant by means of an analytical model including air bearings, surface adhesion and slider-lubricant and slider-disk contacts. The basic design conditions for a stable surfing HDI are also discussed.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"5 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":"131178044","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: 6
Robust friction compensation in HDDs hdd的鲁棒摩擦补偿
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925378
Zhi Wang, C. Du
{"title":"Robust friction compensation in HDDs","authors":"Zhi Wang, C. Du","doi":"10.1109/APMRC.2009.4925378","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925378","url":null,"abstract":"Friction compensation via position measurement only in hard disk drives (HDD) is considered in this paper. A robust nonlinear adaptive controller is designed which uses only the motor position (i.e., the output) for feedback and does not require knowledge of electromechanical system parameters, such as parameters in the friction model, rotor inertia, etc. Reduced-order Lunberger observer is introduced and observer-based backstepping procedure is carried out in this paper. Simulation results are depicted to show the performance of the advocated controller.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"27 s77","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113954073","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: 3
HDD spindle motor system design for data recording with ultrahigh TPI 用于超高TPI数据记录的HDD主轴电机系统设计
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925394
C. Bi
{"title":"HDD spindle motor system design for data recording with ultrahigh TPI","authors":"C. Bi","doi":"10.1109/APMRC.2009.4925394","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925394","url":null,"abstract":"The performance of spindle motor system is crucial to HDD. The trend of ultrahigh ADD recording in the drive is bringing challenges to the spindle motor system. The paper presents several ways to handle these challenges, which include the measures in electromagnetic structure, mechanical system, and power drive.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"159 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":"132530068","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
Lubricant behavior simulation with particle method 基于粒子法的润滑油行为模拟
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925420
E. Ishii, H. Kohira
{"title":"Lubricant behavior simulation with particle method","authors":"E. Ishii, H. Kohira","doi":"10.1109/APMRC.2009.4925420","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925420","url":null,"abstract":"Lubricant behavior within head-disk clearance was simulated using a particle method based on continuum dynamics. The lubricant behavior was simulated on various sets of surface tension and viscous stress. The results from the simulation show that viscous stress was dominant in comparison with surface tension on the viscosity of bulk condition.","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":"133778863","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 corrosion resistant property of media lubricant 介质润滑剂的耐腐蚀性能
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925382
R. Ji, Jun Zhang, Baoxi Xu, T. Dao, Jianwei Xu, T. Liew
{"title":"The corrosion resistant property of media lubricant","authors":"R. Ji, Jun Zhang, Baoxi Xu, T. Dao, Jianwei Xu, T. Liew","doi":"10.1109/APMRC.2009.4925382","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925382","url":null,"abstract":"On hard disk surfaces, lubricant layer not only contributes for triological requirement, but also inhibits the generation of corrosion. Corrosion resistance is a key factor in the novel lubricant development. This paper studies the corrosion products on disk surfaces with different lubricant. The relationship between the lubricant molecular structure/properties and the corrosion product composition/distribution on hard disk surfaces is studied and reported.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"64 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":"133660647","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
Stabilities of sub-5 nm air bearing slider 5毫微米以下气轴承滑块的稳定性
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 2009-05-15 DOI: 10.1109/APMRC.2009.4925365
W. Hua, B. Liu, S. Yu, W. Zhou
{"title":"Stabilities of sub-5 nm air bearing slider","authors":"W. Hua, B. Liu, S. Yu, W. Zhou","doi":"10.1109/APMRC.2009.4925365","DOIUrl":"https://doi.org/10.1109/APMRC.2009.4925365","url":null,"abstract":"The work done by various forces acting on the air bearing slider are analyzed and calculated, and their contributions to the flying stabilities of a sub-5 nm air bearing slider are evaluated quantitatively. It is found that the air bearing force plays an important role on the slider's flying stabilities, while the intermolecular force and the friction force tend to excite the slider bouncing.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"17 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":"123281298","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
Analysis of built-in speaker induced structural-acoustic vibration of Hard Disk Drives in notebook PC 笔记本电脑内置扬声器引起的硬盘结构声振动分析
2009 Asia-Pacific Magnetic Recording Conference Pub Date : 1900-01-01 DOI: 10.1109/apmrc.2009.4925417
Y. Y. Hu, S. Yoshida, S. Nakamura, K. Watanabe, W. Z. Lin, E. T. Ong, J. Mou
{"title":"Analysis of built-in speaker induced structural-acoustic vibration of Hard Disk Drives in notebook PC","authors":"Y. Y. Hu, S. Yoshida, S. Nakamura, K. Watanabe, W. Z. Lin, E. T. Ong, J. Mou","doi":"10.1109/apmrc.2009.4925417","DOIUrl":"https://doi.org/10.1109/apmrc.2009.4925417","url":null,"abstract":"Hard Disk Drive (HDD) is expected to remain a good choice in many consumer electronics and portable devices due to its various advantages. Built-in devices, such as speakers, in notebook PC are one of the major vibration sources causing performance problems of HDD. The effects of air borne and structural borne oscillating forces, generating from speakers, acting on HDD are investigated by experiments and simulation. The effects of stiffness and damping ratio of HDD supporters in notebook PC are analyzed by verified FEM models.","PeriodicalId":376463,"journal":{"name":"2009 Asia-Pacific Magnetic Recording Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116070646","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
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