Predictive Fault Detection
The below figures show a graph of the model prediction output and actual measurements. At some point the actual measurements deviate from the model output. The left figure shows how temperature increases more than it should according to the model, which has predicted the temperature output based on load activity, fan speed, and other parameters. Examining the top right figure it is clear that the actual and predicted duty cycles are the same. This means the fault does not lie in the control signal. However, from the bottom right figure, it is seen that the fan RPM is lower than what the model evaluates it to be. This indicates that the fan is not running as it should. The reason might be increase resistance due to external conditions or the fan simply does not get the power it requires. This also explains the increase in CPU temperature. See the results page for more examples.