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Investigation of Cooperative SLAM for Low Cost Indoor Robots
Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS).
2016 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

In robotics, SLAM is the problem of dynamically building a map while simultaneously using it to localize the robot. Most SLAM solutions rely on laser ranger devices or vision sensors (cameras). This work studies the possibility of extending current established SLAM solutions to low cost robotic platforms with few low quality short range distance sensors (Infrared and Sonar) and weak odometery information. This work starts by studying the performance of a low cost robotic platform `DiddyBorg' and build models for sensors and odometry to be used in SLAM implementation. Next, three SLAM solutions are implemented, tested and compared both in real environment and under simulation. The first two solutions are based on the well-established EKF-SLAM and RBPF-SLAM while the third is a custom simplified solution that is proposed in this work. The results show that RBPF-SLAM performed poorly compared to EKF-SLAM due to the limited sensory input affecting the quality of particles weighing scheme. The results also shows that while the sparsity of the sensors is a limiting factor on SLAM quality in general, the limited range of the sensors is a determinant factor on the overall convergence of SLAM. Finally, a simple map coding and merging algorithm is presented for evaluation of multi-robot collaborative SLAM, the solution enables a group of robots to collaborate on the SLAM tasks without any priori knowledge of the relative locations of robots.

Ort, förlag, år, upplaga, sidor
2016. , s. 93
Nationell ämneskategori
Inbäddad systemteknik
Identifikatorer
URN: urn:nbn:se:hh:diva-31931OAI: oai:DiVA.org:hh-31931DiVA, id: diva2:958056
Ämne / kurs
Datateknik
Handledare
Examinatorer
Tillgänglig från: 2016-09-06 Skapad: 2016-09-05 Senast uppdaterad: 2016-09-06Bibliografiskt granskad

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Halmstad Embedded and Intelligent Systems Research (EIS)
Inbäddad systemteknik

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