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ADMM applied to energy management of ancillary systems in trucks
RISE, Swedish ICT, Viktoria.
RISE, Swedish ICT, Viktoria.
2015 (English)In: American Control Conference, 2015Conference paper, Published paper (Refereed)
Abstract [en]

This paper investigates how recently endorsed methods in distributed   optimization can be exploited in the energy-management problem for   heavy trucks, with focus on improved control of ancillary   systems. The justification for investigating this is not because of   the large size of the optimization problem, but rather because it   can offer higher modularity and integrity to the development process   of vehicle models.

  This paper assumes an indirect approach for solving the optimal   control problem. For simplicity, a multi-level control hierarchy is   also assumed, where prediction and integer decisions are planned at   a higher level, while ancillary control takes place at a lower   level. This allows the higher level to deliver an estimate of   optimal costates to the lower level.

  Convex models of ancillary components allow the problem to be   formulated as a second-order cone program at the lower-level, which   can be reformulated as an exchange problem suitable for distributed   control. The exchange problem is solved using the alternating   direction method of multipliers with proximal message passing, which   returns a solution with the same fuel economy as that from dynamic   programming. Convergence properties are briefly discussed, where the   most notable conclusion is that warm start gives a significant   improvement on the convergence rate, supporting practical   feasibility of the distributed approach. Future work includes to   augment the problem, investigate if other algorithms can be more   suitable for this problem, and to deal with real-time implementation   issues.

Place, publisher, year, edition, pages
2015.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-25292DOI: 10.1109/ACC.2015.7171866OAI: oai:DiVA.org:ri-25292DiVA, id: diva2:1132555
Conference
American Control Conference (ACC), 2015 1-3 July 2015
Available from: 2018-05-18 Created: 2016-10-31 Last updated: 2018-05-18Bibliographically approved

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