Dissertation > Excellent graduate degree dissertation topics show

Research on AGC System Design and Simulink of Hard Disk Read/Write Channel

Author: ChenYing
Tutor: WangHaiWei
School: Huazhong University of Science and Technology
Course: Computer System Architecture
Keywords: Analog front end Automatic gain control Variable gain amplifier Continuous time low-pass filter
CLC: TP333
Type: Master's thesis
Year: 2007
Downloads: 51
Quote: 0
Read: Download Dissertation

Abstract


With the data storage devices pervasive impacting in computing, communication, consumer, and entertainment systems, hard disk technology has been developing greatly to meet the high-performance external equipment. Recently, as the capacity of magnetic disk drive increases significantly, while the size of disk drive is keeping smaller and smaller, it is necessary to use advanced read/write channel system.The automatic gain control(AGC) system of high-performance analog front-end (AFE), dedicated to read/write channel of the hard disk, can amply normally the read head signal, compensate circuit gain, restrain the absolute amplitude of signal detected, retain the best resolving power of the relative amplitude in the spectrum and prevent channel saturation and data loss.The main technology included in achieving AGC system are the variable gain amplifier(VGA) design, the filter constant delay characteristics, the loop gain stability time, the linear characteristics of the system loop and so on. On the basis of hardware implementation, there are some discussions about the realization of the gain amplifier, the compare between standard exponential function and constructed exponential function. In addition, a in-depth study of the continuous time low-pass filter(CTF) group delay and experimental results under different conditions are given too.Under the conditions of highly storing density, AGC system model and MATLAB simulation can provide some important information and theoretical basis for experimental platform and existing read/write channel, while they do some modest contributions to the hard disk servo-burning technology.

Related Dissertations

  1. The Design of a BiCMOS Wide Gain Range Variable Gain Amplifier,TN722
  2. Research of Automatic Gain Control Loop and Dc-Offset Cancellation Circuit,TN851
  3. 2.6GHzTDD-LTE receiver design and implementation,TN851
  4. High sensitivity wireless control timing receiver with AGC,TN851
  5. Voice quality optimization wireless terminal design,TN912.3
  6. Wideband Variable Gain Amplifier Research and Design,TN722
  7. A Study of Direct RF Sampling Receiver in Magnetic Resonance Imaging System,R197.39
  8. The Design of 1.5～512.0MHz Wide Band Digital RF Front-end,TN851
  9. Development of a Software Radio System Based on PCI Bus,TN925
  10. Research Onkey Technologies of C-Waveband Receiver,TN957.5
  11. Research on Digital Automatic Gain Control and Sensitivity Time Control,TN957.5
  12. 2.5Gb/sCMOS optical receiver front-end amplifier design,TN851
  13. Intelligent Wireless Image Transmission System,TN919.8
  14. Analysis and Design of Analog Front-End of Contactless RFID Card,TN432
  15. Microgyroscope closed loop drive system wide dynamic VGA circuit design,V241.5
  16. A Research on the Technique of Temperature Compensation for the Signal of High Precision Photoelectric Encoder,V443.1
  17. Research on Front-End and Signal Processing in Pulsed Doppler System,R445.1
  18. Passive UHF RFID tag chip analog front-end design,TP391.44
  19. Based on 0.35μm process passive UHF RFID tag chip analog front-end circuit design,TP391.44
  20. Passive UHF RFID chip architecture and design of new,TP391.44
  21. Design and Investigation of CDMA Handset CX1880 RF Circuit,TN929.533

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > Memory
© 2012 www.DissertationTopic.Net  Mobile