Advanced

Frequency-Domain Iterative Learning Control of a Marine Vibrator

Sörnmo, Olof LU ; Bernhardsson, Bo LU ; Kröling, Olle; Gunnarsson, Per and Tenghamn, Rune (2016) In Control Engineering Practice 47. p.70-80
Abstract
To the purpose of marine seismic acquisition, new acoustic sources have been developed to reduce the environmental impact. The use of marine vibrators makes it possible to define emission frequency ranges, consequently allowing limitation of the frequencies that disturb marine animal life. Constructing marine vibrators with high efficiency and linear dynamics is however difficult, and the vibrators suffer from both friction, backlash and high-order harmonics. These nonlinear effects, in combination with drifting dynamics, make the required control a crucial and challenging problem. This paper presents a model-based iterative learning control solution, performed in the frequency-domain. Additionally, an adaptive reidentification algorithm... (More)
To the purpose of marine seismic acquisition, new acoustic sources have been developed to reduce the environmental impact. The use of marine vibrators makes it possible to define emission frequency ranges, consequently allowing limitation of the frequencies that disturb marine animal life. Constructing marine vibrators with high efficiency and linear dynamics is however difficult, and the vibrators suffer from both friction, backlash and high-order harmonics. These nonlinear effects, in combination with drifting dynamics, make the required control a crucial and challenging problem. This paper presents a model-based iterative learning control solution, performed in the frequency-domain. Additionally, an adaptive reidentification algorithm is developed to cope with drifting dynamics. The proposed solutions are successfully evaluated in experiments with a marine vibrator. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Control Engineering Practice
volume
47
pages
70 - 80
publisher
Elsevier
external identifiers
  • scopus:84955088723
ISSN
0967-0661
language
English
LU publication?
yes
id
eac7b17a-fd3c-4740-aeff-f6e5351b311e (old id 8408270)
date added to LUP
2015-12-18 13:16:38
date last changed
2017-07-09 04:43:53
@article{eac7b17a-fd3c-4740-aeff-f6e5351b311e,
  abstract     = {To the purpose of marine seismic acquisition, new acoustic sources have been developed to reduce the environmental impact. The use of marine vibrators makes it possible to define emission frequency ranges, consequently allowing limitation of the frequencies that disturb marine animal life. Constructing marine vibrators with high efficiency and linear dynamics is however difficult, and the vibrators suffer from both friction, backlash and high-order harmonics. These nonlinear effects, in combination with drifting dynamics, make the required control a crucial and challenging problem. This paper presents a model-based iterative learning control solution, performed in the frequency-domain. Additionally, an adaptive reidentification algorithm is developed to cope with drifting dynamics. The proposed solutions are successfully evaluated in experiments with a marine vibrator.},
  author       = {Sörnmo, Olof and Bernhardsson, Bo and Kröling, Olle and Gunnarsson, Per and Tenghamn, Rune},
  issn         = {0967-0661},
  language     = {eng},
  pages        = {70--80},
  publisher    = {Elsevier},
  series       = {Control Engineering Practice},
  title        = {Frequency-Domain Iterative Learning Control of a Marine Vibrator},
  volume       = {47},
  year         = {2016},
}