One of our recent work was evaluation of the “Integrated Vehicle Health Monitoring(IVHM)” of electronic systems using VisualSim for modeling and simulation. In the current scenario most of the solutions are using analytical methods to evaluate “success” or “failure” of a system which is obviously a critical task.
We have created a very detailed level models of Permanent Magnetic Generator(PMG), AC to DC converters, LRU’s which are considered as a subsystem modules.
The baseline model can be used for a variety of experiments. The PMG is a separate model, and the user will insert faults in to PMG in different forms, such as, creating a winding faults that starts at 10% short and increases to 100% short winding in the PMG. We will evaluate how this will impact the system output. Unlike analytical and other Spice simulation, this model can look at the impact on the entire system. When the problem is recognized, the user can determine why the issue occured and how to trace the cause. The model can also be used to evaluate the “goodness” of algorithms which can be able to do fault analysis and also management, current signature analysis and Power modeling for Aircraft case study at a detailed level. The model can be enhanced with a co-simulation with MatLab.
Why IVHM is required?
IVHM examines the vehicle health against the vehicle usage data and within the context of similar information for other vehicles within the fleet. In use vehicles display unique usage characteristics and also some characteristics common across the fleet. Where usage data and system health data is available these can be analyzed to identify these characteristics. This is useful in the Identification of problems unique to one vehicle as well as identifying trends in vehicle degradation across the entire fleet.