Exploiting Job Response-Time Information in the Co-Design of Real-Time Control Systems
2015 (English)In: 2015 IEEE 21ST INTERNATIONAL CONFERENCE ON EMBEDDED AND REAL-TIME COMPUTING SYSTEMS AND APPLICATIONS, Institute of Electrical and Electronics Engineers (IEEE), 2015, 247-256 p.Conference paper (Refereed)
We consider a real-time system of multiple tasks, each task having a plant to control. The overall quadratic control cost is to be optimized. We exploit the periodicity of the task response time, which corresponds to a periodic delay pattern in the feedback control loop. Perturbed periods are used as a tool to find a finite hyper period. We present an analytical procedure to design a periodic linear-quadratic-Gaussian (LQG) controller for tasks with fixed execution times as well as a numerical solution to the periodic -- stochastic LQG problem for tasks with variable execution times. The controllers are evaluated using simulations in real-time scheduling and control co-design examples.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015. 247-256 p.
, IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, ISSN 1533-2306
IdentifiersURN: urn:nbn:se:liu:diva-124404DOI: 10.1109/RTCSA.2015.23ISI: 000378419800026ISBN: 978-1-4673-7855-0OAI: oai:DiVA.org:liu-124404DiVA: diva2:898580
2015 IEEE 21st International Conference on Embedded and Real-Time Computing Systems and Applications, 19-21 Aug. 2015 Hong Kong