# Control of oxygen excess ratio in a PEM fuel cell system using high-order sliding-mode controller and observer

> Research article (TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2015) · cited 25× · AI/ML

**Wikidata**: [openalex:W2123693112](https://www.wikidata.org/wiki/openalex:W2123693112)  
**Source**: https://4ort.xyz/entity/control-of-oxygen-excess-ratio-in-a-pem-fuel-cell-system-using-high-order-sliding-mode-controller-and-observer