Data based modeling for PEM fuel cell monitoring – a test bench application, Part II
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17th IEEE International Conference on Control Applications (CCA)
In part II of this paper two important methods for the monitoring procedure of the fuel cell (part I) are presented. First, a time delay estimation method, which allows a better data based modeling of the underlying fuel cell system. Second, the sequential probability ratio test (SPRT) which improves the fault detection results concerning over-detection and reliability.
For the time delay estimation method using mutual information a minimum search algorithm is discussed, because the easy approach of a global minimum does not always guarantee a real time delay. The challenge for the SPR test is the design of a probability density function without having prior knowledge about the process.
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17th IEEE International Conference on Control Applications, September 3-5, 2008, San Antonio, Texas, USA