Advanced planning systems for hard disk drive assembly
Advanced planning systems for hard disk drive assembly
... Problem Instances For Hard- Disk Drive Build -Planning Problem 123 6.2 Computational Results For Hard- Disk Drive Build -Planning Problem 125 6.3 CPU time (s) For Hard- Disk Drive Build -Planning Problem ... v List of Figures 3.1 Shortest Path Network for Hard- Disk Drive Production Planning 46 3.2 Multicommodity Network for Hard- Disk Drive Production...
Advance servo control for hard disk drive in mobile application
... literally Finally, I wish to thank the following colleagues: Linlin Thi (for her patience and hardworking in developing hardware and firmware for the experiment setup together with me), Dr Chunling Du ... Pseudo-sine Current Profile for Smooth Seeking Hard disk drive is widely used in consumer electronics where acoustic noise is becoming a more important performance index Quiet s...
Robust design of miniaturised spindle motors for hard disk drive
... ROBUST DESIGN OF MINIATURISED SPINDLE MOTORS FOR HARD DISK DRIVE GAO XIAN KE (M.Eng, B.Eng) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL AND ... application of robust design in hard disk drive industry As the objective of the research is to formulate effective robust design approaches systematically for the...
Tài liệu Hard Disk Drive Servo Systems- P1 docx
... 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...
Tài liệu Hard Disk Drive Servo Systems- P2 docx
... 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...
Tài liệu Hard Disk Drive Servo Systems- P3 ppt
... 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...
Tài liệu Hard Disk Drive Servo Systems- P4 ppt
... 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...
Tài liệu Hard Disk Drive Servo Systems- P5 pdf
... 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...
Tài liệu Hard Disk Drive Servo Systems- P6 pdf
... 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...
Tài liệu Hard Disk Drive Servo Systems- P7 pptx
... 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...
Tài liệu Hard Disk Drive Servo Systems- P8 docx
... 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...
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...
Tài liệu Tổng quan về Ổ cứng Hard Disk Drive (HDD) doc
... ổ cứng tổ chức mà số tài liệu nói chung chung “tổ chức liệu ổ cứng Tổ chức liệu đĩa cứng cách xếp phần tử/đơn vị lưu trữ liệu mức thấp mà nhà sản xuất quy định đồng thời giá trị đo lường ổ cứng ... cần nguồn nuôi” B.Tổ chức liệu đĩa cứng : Ở xin khẳng định rõ quan điểm “tổ chức liệu (hay gọi tổ chức liệu cấp thấp)” đĩa cứng để phân biệt rõ ràng với “tổ chức...
Tổng quan về Ổ cứng Hard Disk Drive (HDD) potx
... track: sản xuất đĩa cứng nhà sản xuất ghi rõ ràng thông số liên quan đến ổ cứng có phần số sector track (sector per track) Những ổ cứng đại ngày sử dụng nhiều kích cỡ khác track Ổ cứng ghi đọc theo ... không bên ổ cứng “giữa ổ cứng đầu đọc có lớp đệm không khí lớp đệm từ trường” số báo sách đề cập đến Tốc độ motor quay đĩa từ cao quay tạo gió ta mở nắp đậy ổ cứng ra...
Chương 6 - Ổ cứng HDD1. Giới thiệu về ổ cứng HDD ( Hard Disk Drive ) Ổ cứng là doc
... ổ đĩa CD Rom đĩa cứng lại => sau thử lại => Lưu ý : có ổ đĩa cắm chung dây cáp tín hiệu ý Jumper ta phải thiết lập ổ Master (MS) ổ Slave (SL) Jumper thiết lập cho ổ Master (MS) hay Slave (SL) ... tiến hành Phân vùng ổ đĩa ( gọi chia ổ ) - Công việc kỹ thuật viên lắp ráp máy tính Phân vùng trình chia ổ đĩa vật lý thành nhiều ổ Logic khác ổ logic ta cài hệ điều...