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Humanoids that crawl: Comparing gait performance of iCub and NAO using a CPG architecture
Högskolan i Skövde, Institutionen för kommunikation och information.
Högskolan i Skövde, Institutionen för kommunikation och information.
Högskolan i Skövde, Institutionen för kommunikation och information.
Högskolan i Skövde, Institutionen för kommunikation och information.
2011 (English)In: Proceedings - 2011 IEEE International Conference on Computer Science and Automation Engineering, CSAE 2011 / [ed] Shaozi Li, Ying Dai, IEEE conference proceedings , 2011, 577-582 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this article, a generic CPG architecture is used to model infant crawling gaits and is implemented on the NAO robot platform. The CPG architecture is chosen via a systematic approach to designing CPG networks on the basis of group theory and dynamic systems theory. The NAO robot performance is compared to the iCub robot which has a different anatomical structure. Finally, the comparison of performance and NAO whole-body stability are assessed to show the adaptive property of the CPG architecture and the extent of its ability to transfer to different robot morphologies. © 2011 IEEE.

Place, publisher, year, edition, pages
IEEE conference proceedings , 2011. 577-582 p.
Series
Proceedings - 2011 IEEE International Conference on Computer Science and Automation Engineering, CSAE 2011, 4
Keyword [en]
CPG, Crawling, iCub, Infant development, NAO, Algebra, Network architecture, Robots, System theory, Computer architecture
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-106772DOI: 10.1109/CSAE.2011.5952916Scopus ID: 2-s2.0-80051897170ISBN: 9781424487257 (print)OAI: oai:DiVA.org:liu-106772DiVA: diva2:718754
Conference
2011 IEEE International Conference on Computer Science and Automation Engineering, CSAE 2011, 10 June 2011 through 12 June 2011, Shanghai
Available from: 2013-02-19 Created: 2014-05-22 Last updated: 2014-05-22Bibliographically approved
In thesis
1. Reinforcement Learning of Locomotion based on Central Pattern Generators
Open this publication in new window or tab >>Reinforcement Learning of Locomotion based on Central Pattern Generators
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Locomotion learning for robotics is an interesting and challenging area in which the movement capabilities of animals have been deeply investigated and acquired knowledge has been transferred into modelling locomotion on robots. What modellers are required to understand is what structure can represent locomotor systems in different animals and how such animals develop various and dexterous locomotion capabilities. Notwithstanding the depth of research in the area, modelling locomotion requires a deep rethinking.

In this thesis, based on the umbrella of embodied cognition, a neural-body-environment interaction is emphasised and regarded as the solution to locomotion learning/development. Central pattern generators (CPGs) are introduced in the first part (Chapter 2) to generally interpret the mechanism of locomotor systems in animals. With a deep investigation on the structure of CPGs and inspiration from human infant development, a layered CPG architecture with baseline motion generation and dynamics adaptation interfaces are proposed. In the second part, reinforcement learning (RL) is elucidated as a good method for dealing with locomotion learning from the perspectives of psychology, neuroscience and robotics (Chapter 4). Several continuous-space RL techniques (e.g. episodic natural actor critic, policy learning by weighting explorations with returns, continuous action space learning automaton are introduced for practical use (Chapter 3). With the knowledge of CPGs and RL, the architecture and concept of CPG-Actor-Critic is constructed. Finally, experimental work based on published papers is highlighted in a path of my PhD research (Chapter 5). This includes the implementation of CPGs and the learning on the NAO robot for crawling and walking. The implementation is also extended to test the generalizability to different morphologies (the ghostdog robot). The contribution of this thesis is discussed from two angles: the investigation of the CPG architecture and the implementation (Chapter 6).

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2014. 71 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1602
National Category
Computer Science
Identifiers
urn:nbn:se:liu:diva-105884 (URN)978-91-7519-313-7 (ISBN)
Public defence
2014-06-04, G110, hus G, Högskolan i Skövde, Skövde, 12:30 (English)
Opponent
Supervisors
Available from: 2014-05-22 Created: 2014-04-11 Last updated: 2014-05-22Bibliographically approved

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Li, CaiLowe, RobertDuran, BorisZiemke, Tom

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Citation style
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