Modelling and simulation studies on adaptive controller for alt-azimuth telescopes despite unknown wind disturbance and mass

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dc.authorid0000-0002-2290-5228
dc.authorid0000-0002-0710-1686
dc.authorid0000-0003-1894-7190
dc.contributor.authorKeskin, Onuren_US
dc.contributor.authorÜnal, Ali Cemen_US
dc.contributor.authorKararsız, Gökhanen_US
dc.contributor.authorYılmaz, Tuğrulen_US
dc.contributor.authorYeşilyaprak, Cahiten_US
dc.date.accessioned2020-09-25T06:40:48Z
dc.date.available2020-09-25T06:40:48Z
dc.date.issued2020-09-15
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Mechanical Engineeringen_US
dc.description.abstractNumerous ground-based observatories are using small sized ground telescopes for scientific research purposes. The telescopes that are available on the market have three main problems. These issues can be listed as: positioning repeatability, tuning requirement according to different wind speeds for different seasons, and the mass changing via different scientific equipments added to the telescope. This study is aimed at resolving these issues for ground based small alt-azimuth telescopes. Establishing of a set and forget system is performed by designing an adaptive controller. Motor dynamics are taken into consideration for a realistic mathematical model. The Wind-Gust model that consists of a sum of sinusoidal disturbances with unknown phase, amplitude and frequency is used for the wind model. The purposed controller cancels the disturbance effects on the plant while operational positioning and also the makes the plant insensitive to mass changes. The Lyapunov approach is utilised when proving the asymptotic stability. The proposed controller’s success is illustrated with thorough numerical evaluation.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationKeskin, O., Ünal, A. C., Kararsız, G., Yılmaz, T. & Yeşilyaprak, C. (2020). Modelling and simulation studies on adaptive controller for alt-azimuth telescopes despite unknown wind disturbance and mass. Advances in Mechanical Engineering, 12(9), 1-7.doi:10.1177/1687814020954767en_US
dc.identifier.doi10.1177/1687814020954767
dc.identifier.endpage7
dc.identifier.issn1687-8132
dc.identifier.issn1687-8140
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85091048825
dc.identifier.scopusqualityQ3
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/11729/2460
dc.identifier.urihttp://dx.doi.org/10.1177/1687814020954767
dc.identifier.volume12
dc.identifier.wosWOS:000573121000001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorKeskin, Onuren_US
dc.institutionauthorÜnal, Ali Cemen_US
dc.institutionauthorid0000-0002-2290-5228
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherSAGE Publicationsen_US
dc.relation.ispartofAdvances in Mechanical Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAdaptive controlen_US
dc.subjectBacksteppingen_US
dc.subjectParametric uncertaintyen_US
dc.subjectReference trackingen_US
dc.subjectTelescopeen_US
dc.subjectWind disturbance observeren_US
dc.titleModelling and simulation studies on adaptive controller for alt-azimuth telescopes despite unknown wind disturbance and massen_US
dc.typeArticleen_US
dspace.entity.typePublication

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