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Gradient-based iterative learning control for decentralised collaborative tracking

Gradient-based iterative learning control for decentralised collaborative tracking
Gradient-based iterative learning control for decentralised collaborative tracking

Collaborative tracking control of multi-agent sys tems involves two or more subsystems working together to perform a global objective, and is increasingly used within a diverse range of applications. However existing, predominately centralised, control structures are sensitive to communication delays and data drop-out leading to inaccurate tracking. It- erative learning control (ILC) has been applied to increase performance using past experience, but reliance on inverse dynamics has severely reduced robustness to model uncertainty. This paper proposes the first general decentralized iterative learning framework to address this problem, thereby enabling a wide range of existing ILC methodologies to be applied to this area. This framework is illustrated through the derivation of a decentralised gradient based ILC algorithm which ensures convergence to the required reference trajectory, while simultaneously optimising the control input energy. In addition, a novel balancing algorithm is also proposed to distribute the input energy of each agent and hence avoid sub agent overloading.

721-726
IEEE
Chen, Shangcheng
ad9127e5-deb9-48be-bc8b-c8719f2c023a
Freeman, Christopher
ccdd1272-cdc7-43fb-a1bb-b1ef0bdf5815
Chu, Bing
555a86a5-0198-4242-8525-3492349d4f0f
Chen, Shangcheng
ad9127e5-deb9-48be-bc8b-c8719f2c023a
Freeman, Christopher
ccdd1272-cdc7-43fb-a1bb-b1ef0bdf5815
Chu, Bing
555a86a5-0198-4242-8525-3492349d4f0f

Chen, Shangcheng, Freeman, Christopher and Chu, Bing (2018) Gradient-based iterative learning control for decentralised collaborative tracking. In 2018 European Control Conference, ECC 2018. IEEE. pp. 721-726 . (doi:10.23919/ECC.2018.8550177).

Record type: Conference or Workshop Item (Paper)

Abstract

Collaborative tracking control of multi-agent sys tems involves two or more subsystems working together to perform a global objective, and is increasingly used within a diverse range of applications. However existing, predominately centralised, control structures are sensitive to communication delays and data drop-out leading to inaccurate tracking. It- erative learning control (ILC) has been applied to increase performance using past experience, but reliance on inverse dynamics has severely reduced robustness to model uncertainty. This paper proposes the first general decentralized iterative learning framework to address this problem, thereby enabling a wide range of existing ILC methodologies to be applied to this area. This framework is illustrated through the derivation of a decentralised gradient based ILC algorithm which ensures convergence to the required reference trajectory, while simultaneously optimising the control input energy. In addition, a novel balancing algorithm is also proposed to distribute the input energy of each agent and hence avoid sub agent overloading.

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More information

Published date: 27 November 2018
Venue - Dates: 16th European Control Conference, ECC 2018, Limassol, Cyprus, 2018-06-12 - 2018-06-15

Identifiers

Local EPrints ID: 427609
URI: http://eprints.soton.ac.uk/id/eprint/427609
PURE UUID: c2c6a811-9b89-47f1-ae5d-1a42cbf044a6
ORCID for Shangcheng Chen: ORCID iD orcid.org/0000-0001-8032-2779
ORCID for Bing Chu: ORCID iD orcid.org/0000-0002-2711-8717

Catalogue record

Date deposited: 24 Jan 2019 17:30
Last modified: 20 Jul 2019 01:29

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