Nomenclature ISHM= integrated system health management DIaK = data, information, and knowledge

No abstract

The importance of real-time prognostics and health monitoring (PHM) for mission critical systems has increased as the users of these systems demand improved operational availability, greater reliability, increased safety, and reduced cost 12 . Defining requirements for PHM systems, however, has always been a challenge. Huge improvements in cost, schedule, and customer satisfaction can be realized by applying the concepts of Reliability Centered Maintenance (RCM) to the specification of PHM system requirements. Meanwhile, model-based reasoning methodologies have played an important role in the implementation of PHM systems. The authors have been applying this two-tiered approach to specifying and implementing next generation PHM systems for various mission critical system users. In this paper, we discuss the specific application of RCM focused PHM design and implementation for use in unmanned, remotely piloted aircraft (RPA).

Systems capabilities on ISHM and autonomy have traditionally been addressed separately.This means that ISHM functions, such as anomaly detection, diagnostics, prognostics, and comprehensive system awareness have not been considered traditionally in the context of autonomy functions such as planning, scheduling, and mission execution. One key reason is that although they address systems capabilities, both ISHM and autonomy have traditionally individually been approached as independent strategies and models for analysis. Additionally, to some degree, a unified paradigm for ISHM and autonomy has been difficult to implement due to limitations of hardware and software. This paper explores a unified treatment of ISHM and autonomy in the context of distributed hierarchical autonomous operations.

No abstract