This paper deals with the real-time implementation of feedback controllers. In particular, it provides an analysis of the stability property of closed-loop systems that include a controller that can sporadically miss deadlines. In this context, the weakly hard m-K computational model has been widely adopted and researchers used it to design and verify controllers that are robust to deadline misses. Rather than using the m-K model, we focus on another weakly-hard model, the number of consecutive deadline misses, showing a neat mathematical connection between real-time systems and control theory. We formalise this connection using the joint spectral radius and we discuss how to prove stability guarantees on the combination of a controller (that is unaware of deadline misses) and its system-level implementation. We apply the proposed verification procedure to a synthetic example and to an industrial case study.
@InProceedings{maggio_et_al:LIPIcs.ECRTS.2020.21, author = {Maggio, Martina and Hamann, Arne and Mayer-John, Eckart and Ziegenbein, Dirk}, title = {{Control-System Stability Under Consecutive Deadline Misses Constraints}}, booktitle = {32nd Euromicro Conference on Real-Time Systems (ECRTS 2020)}, pages = {21:1--21:24}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-152-8}, ISSN = {1868-8969}, year = {2020}, volume = {165}, editor = {V\"{o}lp, Marcus}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECRTS.2020.21}, URN = {urn:nbn:de:0030-drops-123845}, doi = {10.4230/LIPIcs.ECRTS.2020.21}, annote = {Keywords: Real-Time Control, Deadline Misses, Weakly Hard Models} }
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