Minimum-energy packet forwarding policies for guaranteed LQG performance in wireless control systems
2012 (English)In: 2012 IEEE 51st Annual Conference on Decision and Control (CDC), IEEE , 2012, 3341-3346 p.Conference paper (Refereed)
This paper studies minimum-energy packet forwarding policies for communicating sensor measurements from plant to controller over an unreliable multi-hop wireless network so as to guarantee that the optimal controller achieves a prespecified closed-loop performance. For fixed sampling interval, we demonstrate that the minimal linear-quadratic control loss is monotonically decreasing in the reliability of the sensor-to-controller communication. This allows us to decompose the overall design problem into two separate tasks: finding the minimum end-to-end reliability that allows to achieve a prespecified linear-quadratic loss, and developing minimum-energy packet forwarding policies under a deadline-constrained reliability requirement. We develop optimal solutions for both subproblems and show how the co-designed system with minimum forwarding energy cost and guaranteed LQG control performance can be found by a one-dimensional search over admissible sampling periods. The paper ends with a numerical example which demonstrates the effectiveness of the proposed framework.
Place, publisher, year, edition, pages
IEEE , 2012. 3341-3346 p.
, IEEE Conference on Decision and Control. Proceedings, ISSN 0191-2216
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-104769DOI: 10.1109/CDC.2012.6426253ISI: 000327200403112ScopusID: 2-s2.0-84874270942ISBN: 978-1-4673-2066-5OAI: oai:DiVA.org:kth-104769DiVA: diva2:567292
51st IEEE Conference on Decision and Control, CDC 2012; Maui, HI; United States; 10 December 2012 through 13 December 2012
FunderICT - The Next Generation
QC 201211162012-11-202012-11-122013-12-19Bibliographically approved