Title page for etd-0725107-163111


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URN etd-0725107-163111
Author Chien-Hui Li
Author's Email Address No Public.
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Department Electrical Engineering
Year 2006
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Design of Sigma-Delta Analog-to-Digital Converter by Sliding Mode Control Techniques
Date of Defense 2007-07-14
Page Count 103
Keyword
  • Sigma-Delta Analog-to-Digital Converter
  • Noise Shaping
  • Oversampling
  • Sliding Mode Control
  • Abstract This thesis is to deal with the saturation problem arisen from the integrator accumulation in the loop of the sigma-delta analog-to-digital converter. Signal passes through the accumulation of several integrators in the high-order sigma-delta analog-to-digital converter, it tends to result in saturation problem in the output of integrator. This phenomenon is prominent especially in implementation. Unable to correctly propagate signal to the next integrator stage, thus, causes the analog-to-digital converter create incorrect result. Accordingly, this thesis proposes a new anti-windup scheme by means of sliding mode control to tackle the saturation problem. We have successfully set up a criterion for the selection of parameters of the sigma-delta analog-to-digital converter to prevent the integrators from saturation. After extensive simulation and experiment, it can significantly improve the ensemble of the sigma-delta analog-to-digital modulator.
    Advisory Committee
  • I-Chih Kao - chair
  • Yung-Chun Wu - co-chair
  • Jerome Chang - co-chair
  • Geeng-Kwei Chang - co-chair
  • Tzuen-Lih Chern - advisor
  • Files
  • etd-0725107-163111.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2007-07-25

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