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Grating Motor Control

Björk, Henrik (2010) In MSc Theses
Department of Automatic Control
Abstract
A monochromator is a part of a spectrometer in which the grating scans the different wavelengths over the exit slit. A full spectrum is generated as the grating scans over a predefined interval. The grating must accelerate to a set speed very fast, then keep the speed constant over a predefined interval, and break to reverse the scan. On top of this come disturbances from an optical filter, causing vibrations in the housing, which can be seen in the spectra if not corrected for in the control algorithm. A model-based control system composed of Proportional-Integral (PI) control, and Iterative Learning Control (ILC), is implemented on a Field-Programmable Gate Array, using LabVIEW. The proposed controller shows promising results, with... (More)
A monochromator is a part of a spectrometer in which the grating scans the different wavelengths over the exit slit. A full spectrum is generated as the grating scans over a predefined interval. The grating must accelerate to a set speed very fast, then keep the speed constant over a predefined interval, and break to reverse the scan. On top of this come disturbances from an optical filter, causing vibrations in the housing, which can be seen in the spectra if not corrected for in the control algorithm. A model-based control system composed of Proportional-Integral (PI) control, and Iterative Learning Control (ILC), is implemented on a Field-Programmable Gate Array, using LabVIEW. The proposed controller shows promising results, with closed loop rise time within given bounds, and reduced disturbance effects. (Less)
Please use this url to cite or link to this publication:
author
Björk, Henrik
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5868
ISSN
0280-5316
language
English
id
8847497
date added to LUP
2016-03-16 12:27:14
date last changed
2016-03-16 12:27:14
@misc{8847497,
  abstract     = {A monochromator is a part of a spectrometer in which the grating scans the different wavelengths over the exit slit. A full spectrum is generated as the grating scans over a predefined interval. The grating must accelerate to a set speed very fast, then keep the speed constant over a predefined interval, and break to reverse the scan. On top of this come disturbances from an optical filter, causing vibrations in the housing, which can be seen in the spectra if not corrected for in the control algorithm. A model-based control system composed of Proportional-Integral (PI) control, and Iterative Learning Control (ILC), is implemented on a Field-Programmable Gate Array, using LabVIEW. The proposed controller shows promising results, with closed loop rise time within given bounds, and reduced disturbance effects.},
  author       = {Björk, Henrik},
  issn         = {0280-5316},
  language     = {eng},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Grating Motor Control},
  year         = {2010},
}