Optimal control issues related to the hard disk drive servo systems

... track-following servo in the hard disk drives Our concern is to increase the servo bandwidth of the hard disk drive systems via the optimal control methods Since the dual stage actuator structure is another ... developed control methods in the hard disk servo to meet the higher performance requirement The dual-stage actuator is considered as ano...

Ngày tải lên: 17/09/2015, 17:17

... the first hard disk with 1.8 platters, later used for PC-card disk drives F IRST 1.3 FORM FACTOR DISK DRIVE (1992): Hewlett Packard’s C3013A is the first 1.3 drive F IRST HIGH GB DISK DRIVE (1993): ... Engineering Drive Singapore 117608 British Library Cataloguing in Publication Data Hard disk drive servo systems - 2nd ed - (Advances in industrial control) 1.Servomecha...

Ngày tải lên: 14/12/2013, 19:15

... section will be utilized heavily in later chapters to solve track-following problems in hard disk drive servo systems 3.6.1 Continuous-time Systems Consider the following continuous-time system: ... the imaginary axis We believe that such a condition is always satisfied for most HDD servo systems However, most servo systems can be represented as certain chains of integrators and th...

Ngày tải lên: 14/12/2013, 19:15

... switching Moreover, the RPT controllers in a track-following servo have been proved to be robust against resonance mode changes from disk to disk and work well against runout disturbances The MSC law ... the plant to be controlled even for a small error Moreover, this algorithm is not suited for disk drive applications for the following reasons: even the smallest system process or m...

Ngày tải lên: 14/12/2013, 19:15

... generated by the data flex cable in the drive The high-frequency resonance modes of the microdrive as given in Chapter are included in simulation For hard disk drive servo systems, the task of the controller ... control toolkit using a practical example on a micro hard disk drive (HDD) servo system design The following dynamical model of an IBM microdrive (DMDM-10340) has bee...

Ngày tải lên: 14/12/2013, 19:15

... order of a few nanometers The servo bandwidth of the current disk drive actuators makes it very hard to achieve this The VCM actuator used in conventional disk drives has hundreds of flexible ... Trackfollowing servo systems have to ensure that the PES is kept to a minimum Having deviations that are above the tolerance of the disk drive would result in too many read or write er...

Ngày tải lên: 14/12/2013, 19:15

... Modeling and Design of a Microdrive System 9.1 Introduction Chapters to focus on the design of single- and dual-stage actuated hard drive servo systems The hard drives considered are those used ... as the VCM driver The VCM actuator is designed to position the R/W head fast and precisely 246 Modeling and Design of a Microdrive System onto the target track, and is driven by a VCM drive...

Ngày tải lên: 14/12/2013, 19:15

... application to hard disk drive servo system Proc 6th Int Workshop Adv Motion Contr; Nagoya, Japan; 2000 p 246–51 Hara S, Hara T, Yi L, Tomizuka M Two degree-of-freedom controllers for hard disk drives ... to hard disk drives Proc 1999 IEEE Int Conf Contr Appl; Kohala Coast, HI; 1999 p 170–5 13 Wang L, Yuan L, Chen BM, Lee TH Modeling and control of a dual actuator servo syst...

Ngày tải lên: 14/12/2013, 19:15

... control for hard disk dual-stage servo systems IEEE Trans Magn 2001; 37:949–54 161 Li Y, Horowitz R Track-following controller design of MEMS based dual-stage servos in magnetic hard disk drives Proc ... for fast and precise servo system of hard disk drives Proc 6th Int Workshop Adv Motion Contr; Nagoya, Japan; 2000 p 69–73 146 Tsuchiura KM, Tsukuba HH, Toride HO, Takahashi T...

Ngày tải lên: 14/12/2013, 19:15

... assigned to paint over them and finally the day came when, rather reluctantly, I got hold of some paint and a brush As I finished applying the second coat of paint to the patch of the wall where once the ... (to cut) This word is not related to the word scissors The two have entirely different roots Scissors ultimately came from Latin cisorium (cutting tool) though on th...

Ngày tải lên: 25/10/2013, 16:20

... here A related word is the verb oxtercog, which means to drag somebody along by their armpits—people often need to be oxtercogged to a taxi after they have had one drink too many —Wesley Johnston, ... around the Sun in the same way as it has in the past and will bring the summer to ripen the mangoes Patterns are good, too—most of the time They help us find our shoes eas...

Ngày tải lên: 25/10/2013, 16:20

... carried out at Language and Informatics Center- Vinh City 1.3 OBJECTIVES The objectives of the thesis are: - Identifying the errors in using the prepositions of place and time: AT, ON, IN by Vietnamese ... at the top of the page / of + N 24 at the end of the road at the corner of the street in the corner of the room at the...

Ngày tải lên: 18/12/2013, 10:04

... 10/24/2006 Environment Canada Daily T&P Data • Synoptic data (e.g data transmitted in WMO standard synoptic formats on the GTS) – Human observations – mainly airports – Automatic stations • Aviation ... elements Trends Spatial consistency • Legacy system lacks flexibility to add new elements or data streams or to incorporate new related data into the system to assist che...

Ngày tải lên: 21/02/2014, 21:20