Download or read book The Reduction of Acoustic Noise Emissions from a Hard Disk Drive written by William Hamilton Ray and published by . This book was released on 1994 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterizing the Acoustic Noise Generated by Hard Disk Drives and a Scheme for Detecting Noisy Hard Drives written by Seuk Bo Kim and published by . This book was released on 1992 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hard Disk Drive written by Abdullah Al Mamun and published by CRC Press. This book was released on 2017-12-19 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hard disk drive is one of the finest examples of the precision control of mechatronics, with tolerances less than one micrometer achieved while operating at high speed. Increasing demand for higher data density as well as disturbance-prone operating environments continue to test designers' mettle. Explore the challenges presented by modern hard disk drives and learn how to overcome them with Hard Disk Drive: Mechatronics and Control. Beginning with an overview of hard disk drive history, components, operating principles, and industry trends, the authors thoroughly examine the design and manufacturing challenges. They start with the head positioning servomechanism followed by the design of the actuator servo controller, the critical aspects of spindle motor control, and finally, the servo track writer, a critical technology in hard disk drive manufacturing. By comparing various design approaches for both single- and dual-stage servomechanisms, the book shows the relative pros and cons of each approach. Numerous examples and figures clarify and illustrate the discussion. Exploring practical issues such as models for plants, noise reduction, disturbances, and common problems with spindle motors, Hard Disk Drive: Mechatronics and Control avoids heavy theory in favor of providing hands-on insight into real issues facing designers every day.
Download or read book PERFORMANCE OF HARD DISK DRIVES IN HIGH NOISE ENVIRONMENTS written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Digital information stored in rotational media, such as Hard Disk Drives (HDD) needs to be reliable and readily accessible. Various studies have been performed on the modal analysis of HDDs and the noise emitted during operation. Analysis performed by Siemens Corporation, IBM and Tyco Fire Protection Products show that HDDs are sensitive to noise. This report initially focusses on identifying the critical frequency ranges and the levels of noise where the performance of the drives reduces. A series of tests have been performed using pink noise at one-third octave frequency bands at sound pressure levels ranging from 80 dB to 130 dB (re 20 μPa) in an anechoic chamber. A detailed description on the test set-up along with the methodology of testing has been provided. Read/write speeds have been used to measure HDD performance. A completely random read/write workload with varied data packet size has been incorporated through a custom LabVIEW program. Serial Advanced Technology Attachment (SATA) drives have been used for the analysis. General trends in performance curves of Enterprise HDD, Laptop drives, Helium filled HDD and Non-Helium filled HDDs are shown. HDD performance is shown to be sensitive to sound pressure levels as low as 85 dB (re 20 μPa) at some frequencies. Depending on the type of the HDD, noise at a frequency range of 2 kHz - 8 kHz beyond certain SPL affect the HDD's performance up to the point of temporary and even permanent failure. Speculating the observed frequency content to be the resonant frequencies of the internal parts such as the platter and head gimbal assembly, the modal analysis has been performed. The report later focusses on impact test and measurement of the response using non-contact methods on the HDDs platter and head gimbal assembly. A detailed analysis on the test set-up and measurement parameters has been laid out. The modal parameters obtained, provide an insight to the causal for the HDD's performance reduction and help establish a relation with the results obtained from acoustic experiments. The modal parameters and the response obtained has been validated using Finite Element Analysis. A comprehensive analysis on the failure of HDDs due to modal parameters has been presented.
Download or read book Issues in General Physics Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 13957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in General Physics Research / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about General Physics Research. The editors have built Issues in General Physics Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about General Physics Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in General Physics Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Noise Control Engineering Journal written by and published by . This book was released on 2004 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Information Technology Research and Application 2012 Edition written by and published by ScholarlyEditions. This book was released on 2012-12-26 with total page 3360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Information Technology Research and Application / 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Information Technology. The editors have built Advances in Information Technology Research and Application / 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Information Technology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Advances in Information Technology Research and Application / 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Ultra High Density Magnetic Recording written by Gaspare Varvaro and published by CRC Press. This book was released on 2016-03-30 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today magnetic recording is still the leading technology for mass data storage. Its dominant role is being reinforced by the success of cloud computing, which requires storing and managing huge amounts of data on a multitude of servers. Nonetheless, the hard-disk storage industry is presently at a crossroads as the current magnetic recording techno
Download or read book An Acoustic Emission Study of Hard Disk Wear written by Thomas Francis Malone and published by . This book was released on 1989 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digests of APMRC written by and published by . This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of IEEE International Symposium on Consumer Electronics written by and published by . This book was released on 2004 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOISE CON Proceedings written by and published by . This book was released on 1991 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sound and Recording written by Francis Rumsey and published by CRC Press. This book was released on 2014-02-24 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing vital reading for audio students and trainee engineers, this guide is ideal for anyone who wants a solid grounding in both theory and industry practices in audio, sound and recording. There are many books on the market covering "how to work it" when it comes to audio equipment—but Sound and Recording isn’t one of them. Instead, you’ll gain an understanding of "how it works" with this approachable guide to audio systems. New to this edition: Digital audio section revised substantially to include the latest developments in audio networking (e.g. RAVENNA, AES X-192, AVB), high-resolution surround and parametric audio coding, workstation processing technology, mastering for iTunes, and loudness normalization Coverage of immersive audio systems such as Dolby Atmos, Auro 3D and WFS along with recent developments in audio object coding Sections on digital radio microphones, loudspeaker sensitivity issues and development, and highly directional loudspeaker systems Substantial new sections on recent developments in audio network device discovery and control and the Open Control Architecture
Download or read book ASME Technical Papers written by and published by . This book was released on 1995 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1996 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PC Mag written by and published by . This book was released on 1998-11-17 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: PCMag.com is a leading authority on technology, delivering Labs-based, independent reviews of the latest products and services. Our expert industry analysis and practical solutions help you make better buying decisions and get more from technology.
Download or read book Sound Vibration written by and published by . This book was released on 2001 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
