# 3DOF Ultrasonic Motor with Two Piezoelectric Rings

> Research article (Sensors, 2020) · cited 27× · AI/ML

**Wikidata**: [openalex:W3004491096](https://www.wikidata.org/wiki/openalex:W3004491096)  
**Source**: https://4ort.xyz/entity/3dof-ultrasonic-motor-with-two-piezoelectric-rings