Actuator Fault Reconstruction for PEM Fuel Cell Air-Feed System Using Adaptive Sliding Mode Observer

In this paper, the actuator fault reconstruction problem of PEMFC systems is of concern. Drawn upon the robust second-order sliding mode observer, the improved super-twisting (ST) sliding mode algorithm is put forward in terms of adaptive estimation laws on the uncertain parameters. The proposed fault reconstruction method is of high accurancy, fast response and strong robustness to uncertainties, which poses fundamental basis on the fault-tolerant control. Experimental simulations demonstrate the effectiveness of our results.