Abstract
Digitalization and related networked systems integration and automation have increased the performance of manufacturing. At the same time, the vulnerability of the systems has increased significantly as networks are potential targets for attacks to compromise companies. Therefore, the study focuses on the functional design of cyber resiliency in cyber-physical production systems. To support functionality while emphasizing the resilience of manufacturing systems, Axiomatic Design is used as a design methodology for the concept design of a cyber resiliency module. Based on functional requirements, design parameters were decomposed and design guidelines for preparedness for cyberattacks were provided. The guidelines were applied to a cyber-physical demonstrator that realizes the Industrial Internet of Things with a digital twin. As a result, physical/virtual solutions for the system were found. Such an axiomatic design-based approach allowed for studying solution-neutral functional requirements that resulted in functional cyber resiliency solutions. The provided guidelines have practical value in the planning phase of manufacturing system networks to increase their long-term resiliency. This study fills the gap in the solution-neutral design of cyber resiliency in manufacturing companies.