prikaz prve stranice dokumenta Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors
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doctoral thesis
Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. urn:nbn:hr:168:542275
Banjanović-Mehmedović, Lejla
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Control and Computer Engineering

Cite this document

Banjanović Mehmedović, L. (2006). Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:542275

Banjanović Mehmedović, Lejla. "Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. https://urn.nsk.hr/urn:nbn:hr:168:542275

Banjanović Mehmedović, Lejla. "Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. https://urn.nsk.hr/urn:nbn:hr:168:542275

Banjanović Mehmedović, L. (2006). 'Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 24 April 2024, https://urn.nsk.hr/urn:nbn:hr:168:542275

Banjanović Mehmedović L. Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2006 [cited 2024 April 24] Available at: https://urn.nsk.hr/urn:nbn:hr:168:542275

L. Banjanović Mehmedović, "Autonomous mobile robots localization in large indoor environments by using ultrasound range sensors", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2006. Available at: https://urn.nsk.hr/urn:nbn:hr:168:542275

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Metadata
TitleAutonomous mobile robots localization in large indoor environments by using ultrasound range sensors
Title (croatian)Lokalizacija autonomnih mobilnih robota u velikim unutarnjim prostorima primjenom ultrazvučnih senzora udaljenosti
AuthorLejla Banjanović-Mehmedović
strani drzavljanin: Nije dostupno
MentorIvan Petrović (mentor)
Committee memberNedjeljko Perić (član povjerenstva)
Committee memberIvan Petrović (član povjerenstva)
Committee memberNaser Prljača (član povjerenstva)
strani drzavljanin: Nije dostupno
Committee memberDarko Žubrinić (član povjerenstva)
Committee memberŽeljko Hocenski (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Control and Computer Engineering)
Zagreb
Defense date and country2006-01-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Automation and Robotics
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Global localization is the problem of determining the pose of a mobile robot under global uncertainty. The novel algorithm introduced here is based on the modified Multiple Modul (MM) Estimator and exploits a soft gating of the measurements (SGM) to reduce the computational requirements of presented approach. The localization approach uses a hybrid representation of the robot environment, topological with elements of metric. This localization algorithm consists of a position estimation and orientation estimation part. The position part is based on a x and y histogram scan matching procedure, where x and y histograms are extracted directly from local occupancy grid maps, using Probability Scalar Transform (PST). Histograms obtained at the actual mobile robot pose are compared to nodes histograms with activity status from gated volume to compute position correction. The orientation part is based on two proposed methods: Obstacle Vector Transform (OVT) combined with Polar Histograms and Hough Transform (HT) combined with a non-iterative algorithm for determination of end points and length of straight-line parts combined with Angle Histograms. Histograms obtained at the actual mobile robot pose are compared to histograms saved at previous mobile robot poses to compute orientation correction. The proposed methods for mobile robot orientation correction are compared and present a worth alternative to the use of magnetic compass, particularly in environments with magnetic noise. Sensors used for local occupancy grid generation are sonars but other exteroceptive sensors like a laser range finder can also be used. Experimental results with mobile robot Pioneer 2DX simulator and real robot show the capacity of this method.
Abstract (bosnian)
Globalna lokalizacija je problem odredjenja poze mobilnog robota uz prisustvo globalne neizvjesnosti. Novi algoritam predložen u radu je baziran na modifikovanom multi-modul (MM) estimatoru i koristi svojstva posebno definisanih mjerenja u cilju reduciranja računarske zahtjevnosti predloženog algoritma. Ovaj način lokalizacije koristi hibridnu reperezentaciju robotskog okruženja, topološki pristup sa elementima metrike. Lokalizacioni algoritam sadrži dva dijela: pozicionu i orjentacionu estimaciju. Poziciona estimacija je zasnovana na usporedbi skanova, baziranih na x i y histogramima, gdje su x i y histogrami dobiveni direktno iz mrežne karte lokalne zauzetosti, korištenjem Vjerovatnosne Skalarne Transformacije (VST). Histogrami dobiveni na aktuelnoj pozi mobilnog robota se porede sa histogramima čvorova, čiji aktivni status je dobiven na osnovu vjerovatnosnog algoritma, čime se određuje poziciona korekcija. Orjentaciona estimacija je bazirana na dvije predložene metode: Transformacija Vektora Prepreke (PVT) kombinovana sa polarnim histogramom i Hougova Transformacija (HT) kombinovana sa ne-iterativnim algoritmom za određenje krajnjih točaka i dužine linijskog segmenta kombinovana sa ugaonim histogramima. Histogrami dobiveni na aktuelnoj pozi mobilnog robota su upoređeni sa histogramima sa predhodne poze mobilnog robota u cilju proračuna korekcije orjentacije. Predloženi metodi korekcije orijentacije mobilnog robota su međusobno upoređeni i predstavljaju vrijednu alternativu korištenju magnetnog kompasa, osobito u okruženjima sa magnetnim šumom. Za generisanje lokalne karte zauzetosti korišteni su sonari senzori, ali i drugi opažajni senzori poput lasera mogu biti korišteni u tu svrhu. Eksperimentalni rezultati sa mobilnim robotskim simulatorom i realnim robotom Pioneer 2DX pokazuju kapacitet ove metode.
Keywords
Keywords (bosnian)
Languageenglish
URN:NBNurn:nbn:hr:168:542275
Study programmeTitle: Doctoral study programme "Electrical Engineering and Computing"
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
Type of resourceText
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
RepositoryFER Repository
Created on2019-07-16 13:02:33

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