# Trajectory tracking for two-degree of freedom helicopter system using a controller-disturbance observer integrated design

> Research article (ISA Transactions, 2018) · cited 21× · AI/ML

**Wikidata**: [openalex:W2789694858](https://www.wikidata.org/wiki/openalex:W2789694858)  
**Source**: https://4ort.xyz/entity/trajectory-tracking-for-two-degree-of-freedom-helicopter-system-using-a-controller-disturbance-observer-integrated-desig