Secure State Estimation and Attack Reconstruction in Cyber-Physical Systems

Released on by Shamila Nateghi
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  • Secure State Estimation and Attack Reconstruction in Cyber-Physical Systems Book Detail

  • Author : Shamila Nateghi
  • Release Date : 2020
  • Publisher :
  • Genre : Electronic books
  • Pages : 0
  • ISBN 13 :
  • File Size : 43,43 MB
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Secure State Estimation and Attack Reconstruction in Cyber-Physical Systems by Shamila Nateghi PDF Summary

Book Description: A cyber-physical system (CPS) is a tight coupling of computational resources, network communication, and physical processes. They are composed of a set of networked components, including sensors, actuators, control processing units, and communication agents that instrument the physical world to make ,Äúsmarter.,Äù However, cyber components are also the source of new, unprecedented vulnerabilities to malicious attacks. In order to protect a CPS from attacks, three security levels of protection, detection, and identification are considered. In this chapter, we will discuss the identification level, i.e., secure state estimation and attack reconstruction of CPS with corrupted states and measurements. Considering different attack plans that may assault the states, sensors, or both of them, different online attack reconstruction approaches are discussed. Fixed-gain and adaptive-gain finite-time convergent observation algorithms, specifically sliding mode observers, are applied to online reconstruction of sensor and state attacks. Next, the corrupted measurements and states are to be cleaned up online in order to stop the attack propagation to the CPS via the control signal. The proposed methodologies are applied to an electric power network, whose states and sensors are under attack. Simulation results illustrate the efficacy of the proposed observers.

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