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Prognosis is a fundamental enabling technique for condition-based maintenance (CBM) systems and prognostics and health management (PHM) systems and therefore, plays a critical role in the successful deployment of these systems. The purpose of prognosis is to predict the remaining useful life of a system/subsystem or a component when a fault is detected. Although different prognostic algorithms have...
A challenging problem in aircraft engine health management (EHM) system development is to detect and isolate faults in system components (i.e., compressor, turbine), actuators, and sensors. Existing nonlinear EHM methods often deal with component faults, actuator faults, and sensor faults separately, which may potentially lead to incorrect diagnostic decisions and unnecessary maintenance. Therefore,...
Prognosis is a fundamental enabling technique for condition-based maintenance (CBM) systems and prognostics and health management (PHM) systems and therefore, plays a critical role in the successful deployment of these systems. The purpose of prognosis is to predict the remaining useful life of a system/subsystem or a component when a fault is detected. Although different prognostic algorithms have...
Wireless sensor networks for structural health monitoring (SHM) application have attracted much research interest over the last few years because of their great potential to monitor and maintain the safety of civil structures. This paper puts forward an effective, feasible and reliable wireless sensor system based on ZigBee technology, which can support monitoring structural health such as buildings,...
This paper introduces a novel prognostics-enhanced automated contingency management (or ACM+P) paradigm based on both current health state (diagnosis) and future health state estimates (prognosis) for advanced autonomous systems. Including prognostics in ACM system allows not only fault accommodation, but also fault mitigation via proper control actions based on short term prognosis, and moreover,...
Aeroengine is a complex system, which is controlled by a number of interrelated factors and is difficult to estimate. To overcome the obstacles of conventional health assessment of aeroengine, this paper proposed an effectiveness evaluation method for aeroengine health assessment which combined the advantages of the analytic hierarchy process (AHP) and a grey clustering method to guarantee the accuracy...
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