The Resilience Model Supporting IIoT System Trustworthiness
shown for the system E. Finally, line F
represents a QoS below which the system’s
mission is compromised. The research also
pays attention to the difference between
survivability, robustness and resilience
aspects.
Folke defines and measures using the
ecological approach to the Resilience and
Resistance properties. 11 According to the
last paper, Resilience is the time it takes the
system to return to its equilibrium state after
a perturbation and Resistance of the system
is the magnitude of change to a particular
stimulus.
Some papers considering various types of
resilience seek to define the appropriate
metrics. In the paper of K. Tierney and M.
Bruneau, the Resilience is evaluated using 4
separate metrics comprising the so-called R4
framework:
Robustness,
Redundancy,
10
Resourcefulness, Rapidity. The paper of C.
P ROPOSED M ODEL
In this research, we define the model for IIoT
system Resilience contributing to the
Trustworthiness of this system. The model of
Figure 3: ICS Operation
10
K. Tierney and M. Bruneau. Conceptualizing and measuring resilience - a key to disaster loss reduction. TR News, 250:14-17,
2007.
11
C. Folke. Resilience: The emergence of a perspective for social-ecological systems analyses. Global Environmental Change 16,
2006.
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