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Utveckling av ett digitalt reglersystem för styrning och kontroll av en seismisk vibratorkälla
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
2017 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Development of a digital control system for a seismic vibrator source (English)
Abstract [en]

The report describes how a control system has been developed to dampen known resonance frequency and optimize excitation at other frequencies of a seismic vibrator source. This vibrator source is used to excite energy at the surface of reflection seismic surveys.The resonance frequency dominates the excited signal, which results in limitations of the systems performance. The vibrator source is excited with a power amplifier that receives a control signal from a chirp signal generator. During the project, a chirp generator, as well as a control system, was programmed in Labview, and tested boththrough simulations and in the laboratory. Initially, it was investigated whether it was possible to regulate the system, partly for resonance attenuation and also for optimization of excitation at other frequencies, using a PID controller. However, this proved to be overly advanced and time consuming to perform in a ten-week project. Therefore, the system was regulated by envelope compensation, which both dampened resonance and optimized excitation at other frequencies.

Place, publisher, year, edition, pages
2017. , p. 50
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:uu:diva-325642ISRN: UTH-INGUTB-EX-E-2017/02-SEOAI: oai:DiVA.org:uu-325642DiVA, id: diva2:1115498
Educational program
Bachelor Programme in Electrical Engineering
Presentation
2017-06-16, Ångströms laboratoriumet, Lägerhyddsvägen 1, Uppsala, 23:04 (Swedish)
Supervisors
Examiners
Projects
vibratorkälla, reglersystem, reglerteknikAvailable from: 2017-07-05 Created: 2017-06-26 Last updated: 2017-07-05Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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