# An Input Observer-Based Stiffness Estimation Approach for Flexible Robot Joints

> Research article (IEEE Robotics and Automation Letters, 2020) · cited 23× · AI/ML

**Wikidata**: [openalex:W3004264390](https://www.wikidata.org/wiki/openalex:W3004264390)  
**Source**: https://4ort.xyz/entity/an-input-observer-based-stiffness-estimation-approach-for-flexible-robot-joints