Tài liệu Hard Disk Drive Servo Systems- P1 docx

... was 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 1 HIGH 1GB DISK DRIVE (1993): ... about 1000%. F IRST REMOVABLE DISK DRIVE (1965): IBM’s model 2310 was the first disk drive with a removable disk pack. While many PC users think of removable ha...

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: (3.189) where is ... connections are also made between optimal control and differential games (see, e.g., Bas¸ar and Bernhard [103]). We also recall in this section the solutions to the probl...

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. ... fast and precise servo sys- tem 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...

Ngày tải lên: 14/12/2013, 19:15

... switching. More- over, 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 ... the plant to be controlled even for a small error. Moreover, this algorithm is not suited for disk drive applications for the following reasons: 1. even the smallest system process...

Ngày tải lên: 14/12/2013, 19:15

... positive scalar such that for all F (5.174) we have (5.175) The linear control law in Equation 5.168 drives the system controlled output to track asymptotically a step command input of amplitude from ... discrete-time CNF control law in Equations 5.177 and 5.178 internally stabilizes the given plant and drive the system controlled output to track asymptotically the step command input of amp...

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 ... Track- following 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 wri...

Ngày tải lên: 14/12/2013, 19:15

... property generally holds for all commercial disk drives. As such, it is safe to approximate the relationship of and of the VCM driver as (9.6) For the IBM microdrive used in this work, . Next, it is ... actuator indeed describes the features of the actuator. 9.3 Microdrive Servo System Design We proceed to design a servo system for the microdrive identified in Section 9.2. As mentioned e...

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. ... to hard disk drive servo system. Proc 6th Int Workshop Adv Motion Contr; Nagoya, Japan; 2000. p. 246–51. 5. Hara S, Hara T, Yi L, Tomizuka M. Two degree-of-freedom controlle...

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