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Sammanfattning
Control theory allows one to design controllers that are robust to external disturbances, model simplification, and modelling inaccuracy. Researchers have investigated whether the robustness carries on to the controller’s digital implementation, mostly looking at how the controller reacts to either communication or computational problems. Communication problems are typically modelled using random variables (i.e., estimating the probability that a fault will occur during a transmission), while computational problems are modelled using deterministic guarantees on the number of deadlines that the control task has to meet. These fault models allow the engineer to both design robust controllers and assess the controllers’ behaviour in the presence of isolated faults. Despite being very relevant for the realworld implementations of control system, the question of what happens when these faults occur simultaneously does not yet have a proper answer. In this paper, we answer this question in the stochastic setting, using the theory of Markov Jump Linear Systems to provide stability contracts with almost sure guarantees of convergence. For linear timeinvariant Markov jump linear systems, mean square stability implies almost sure convergence – a property that is central to our investigation. Our research primarily emphasises the validation of this property for closedloop systems that are subject to packet losses and computational overruns, potentially occurring simultaneously. We apply our method to two case studies from the recent literature and show their robustness to a comprehensive set of faults. We employ closedloop system simulations to empirically derive performance metrics that elucidate the quality of the controller implementation, such as the system settling time and the integral absolute error.
Originalspråk  engelska 

Antal sidor  25 
Tidskrift  ACM Transactions on Embedded Computing Systems 
Volym  22 
Nummer  5s 
DOI  
Status  Published  2023 sep. 9 
Ämnesklassifikation (UKÄ)
 Inbäddad systemteknik
 Reglerteknik
Fingeravtryck
Utforska forskningsämnen för ”Stochastic Analysis of Control Systems Subject to Communication and Computation Faults”. Tillsammans bildar de ett unikt fingeravtryck.Projekt
 1 Avslutade

ADMORPH: Towards Adaptively Morphing Embedded Systems
Maggio, M., Cervin, A. & Vreman, N.
European Commission  Horizon 2020
2020/01/01 → 2022/12/31
Projekt: Forskning