Prognostics Center of Excellence
The Prognostics Center of Excellence (PCoE) at Ames Research Center provides an umbrella for prognostic technology development, specifically addressing prognostic technology gaps within the application areas of aeronautics and space exploration.
The common thread among the various avenues of prognostic technology development is the investigation of physics-of-failure at the component level. Modeling damage initiation and propagation at this level is a key element in describing component health. Just as important is the investment of resources into algorithm development to provide the estimates for remaining component life and for uncertainty management.
Some of the challenges that we are interested in tackling include:
- Uncertainty management: How can the information from multiple uncertainty sources be properly captured and processed?
- Autonomic control reconfiguration: How can local prognostic information be translated into changes at the controller level such that controller objectives are satisfied in the long term?
- Integration: How should information from different, interacting subsystems be combined and processed?
- Validation and verification of prognostics: How can the proper operation of prognostic algorithms be validated, especially on new systems?
- Post-prognostic reasoning: How can the information from a prognostic reasoner be turned into an action, also factoring in other considerations such as logistics information, mission information, and fleet management?
To that end, we will employ tools from engineering, statistics, and machine learning. Specifically, we draw upon expertise in:
- Electronics and mechanical systems modeling
- Risk assessment and failure analysis
- Machine learning and soft computing
Prognostic Data Repository
One of the common bottlenecks in prognostic algorithm development is the availability of data that allows the comparison and benchmarking of algorithm performance. This data repository is geared towards easing that bottleneck by making available prognostic data sets to the research community.
Systems Health, Analytics, Resilience, and Physics-modeling (SHARP) Lab
The PCoE makes use of laboratory facilities designed to test, measure, evaluate, and mature diagnostic and prognostic health management technologies. A number of hardware-in-the-loop testbeds and associated measurement equipment allow for controlled, repeatable, safe injection of faults.
The PCoE also hosts a Prognostics Data Set Repository (updated November 2023)