Prognostics and Health Management (PHM) System requirements and validation

This paper based on four key abilities of the Prognostics and Health Management (PHM) System including the abilities of fault detection, fault isolation, fault prognosis and prognosis of the remaining life, analyzes and constructs a framework of the PHM quantitative requirements, and defines the quantitative assessment emphasis of the PHM abilities. Targeting these quantitative requirements and proceeding from the viewpoint of life cycle assessment, this paper presents three methods of the PHM System validation, which are the validation method based on analysis and assessment, the validation method based on simulation (including entire simulation validation and half-entity simulation validation) and the validation method based on experimentation. This paper defines the emphasis on the PHM System analysis and assessment, ascertains the implementary elements and the simulated environmental framework of the PHM System simulated validation and elaborates two central elements of the PHM System experimental validation - the experiment scheme and the experiment technique. This paper provides thoughts and methods to the quantitative validation assessment of the rapidly developing and applying PHM System.