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Cross-Domain Noise Impact Evaluation for Black Box Two-Level Control CPS.

Research output: Contribution to journalJournal article

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  • Feng Tan
  • Liansheng Liu
  • Stefan Winter
  • Qixin Wang
  • Neeraj Suri
  • Lei Bu
  • Yu Peng
  • Xue Liu
  • Xiyuan Peng
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Article number2
<mark>Journal publication date</mark>1/01/2019
<mark>Journal</mark>TCPS
Issue number1
Volume3
Number of pages25
Publication statusPublished
Original languageEnglish

Abstract

Control Cyber-Physical Systems (CPSs) constitute a major category of CPS. In control CPSs, in addition to the well-studied noises within the physical subsystem, we are interested in evaluating the impact of cross-domain noise: the noise that comes from the physical subsystem, propagates through the cyber subsystem, and goes back to the physical subsystem. Impact of cross-domain noise is hard to evaluate when the cyber subsystem is a black box, which cannot be explicitly modeled. To address this challenge, this article focuses on the two-level control CPS, a widely adopted control CPS architecture, and proposes an emulation based evaluation methodology framework. The framework uses hybrid model reachability to quantify the cross-domain noise impact, and exploits Lyapunov stability theories to reduce the evaluation benchmark size. We validated the effectiveness and efficiency of our proposed framework on a representative control CPS testbed. Particularly, 24.1% of evaluation effort is saved using the proposed benchmark shrinking technology.