Resilience allocation for resilient engineered system design

Byeng D. Youn, Chao Hu, Pingfeng Wang, Joungtaek Yoon

Research output: Contribution to journalArticlepeer-review


Most engineered systems are designed with high levels of system redundancies to satisfy required reliability requirementsunder adverse events, resulting in high systems' LCCs (Life-Cycle Costs). Recent years have seen a surge of interest and tremendousadvance in PHM (Prognostics and Health Management) methods that detect, diagnose, and predict the effects of adverse events. ThePHM methods enable proactive maintenance decisions, giving rise to adaptive reliability. In this paper, we present a RAP (ResilienceAllocation Problem) whose goal is to allocate reliability and PHM efficiency to components in an engineering context. The optimallyallocated reliability and PHM efficiency levels serve as the design specifications for the system RBDO (Reliability-Based DesignOptimization) and the system PHM design, which can be used to derive the detailed design of components and PHM units. The RAPis demonstrated using a simplified aircraft control actuator design problem resulting in a highly resilient actuator with optimallyallocated reliability, PHM efficiency and redundancy for the given parameter settings.

Original languageEnglish (US)
Pages (from-to)1082-1089
Number of pages8
JournalJournal of Institute of Control, Robotics and Systems
Issue number11
StatePublished - Nov 2011
Externally publishedYes


  • Prognostics and health management
  • Reliability
  • Resilience allocation
  • Resilient engineered system

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Applied Mathematics


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