Abstract
The article by Wang, Lin and Chou illustrates the integration and control of a 500W self-humidified proton exchange membrane fuel cell (PEMC) system. By applying some classic modern control theory as tools, some robust controllers are designed to regulate the air and hydrogen flow rates. In this article, the authors give detailed design procedure from the mathematical modeling to the controller design. Somemodern control theories, such as systems identification, Hinf control and optimal control are synthetically used. In the Hinf control based design, a key problem is the selection of the weighting function. In this article, such a procedure is shown in details. Due to these reason, in our opinion thework of this article can be viewed as a successful practical application of advanced control theory. It may help to reduce the gap between control theory and control engineering. The overall design procedure of the considered 500W self-humidified PEMC system includes the following aspects.
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