Adaptive randomized controller switching for resilient cyber-physical systems

P. Krishnamurthy, F. Khorrami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A switching based scheme is developed to combine redundant subsystems in controller implementations for cyber-physical systems (CPSs) to increase resiliency to adversarial modifications of a subset of the redundant subsystems. A time-division multiplexer is introduced to select, at each time instant, one of the outputs of multiple controller implementations and pass it through as the input to the physical system being controlled. We show that the proposed time-division multiplexing enables limiting the impact to stability and performance of the closed-loop CPS due to adversarial modifications of a subset of the controllers. Furthermore, we show that by making the switching between controllers probabilistic rather than round-robin and by adapting the probabilities of switching to each of the controllers on-line, the adversarial impact to the CPS can be attenuated over time. The efficacy of the proposed approach is shown through simulation studies on an illustrative example of a single-machine-infinite-bus system.

Original languageEnglish (US)
Title of host publicationCCTA 2020 - 4th IEEE Conference on Control Technology and Applications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages738-743
Number of pages6
ISBN (Electronic)9781728171401
DOIs
StatePublished - Aug 2020
Event4th IEEE Conference on Control Technology and Applications, CCTA 2020 - Virtual, Montreal, Canada
Duration: Aug 24 2020Aug 26 2020

Publication series

NameCCTA 2020 - 4th IEEE Conference on Control Technology and Applications

Conference

Conference4th IEEE Conference on Control Technology and Applications, CCTA 2020
CountryCanada
CityVirtual, Montreal
Period8/24/208/26/20

ASJC Scopus subject areas

  • Computer Science Applications
  • Control and Optimization
  • Instrumentation

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