Online Soft Sensor of Humidity in PEM Fuel Cell Based on Dynamic Partial Least Squares

<table>Comparison of measured and soft sensor’s relative humidity with stepped change of stack current. (a) Stack current <svg height="15.4" id="M158" style="vertical-align:-3.39064pt" version="1.1" viewbox="0 0 16.112499 15.4" width="16.112499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>; (b) anode; (c) cathode.</table>

The Scientific World Journal

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Figure 9

Figure 9: Online Soft Sensor of Humidity in PEM Fuel Cell Based on Dynamic Partial Least Squares 