# A Novel Tiered Type Permanent Magnet Spherical Motor and Its Rotor Orientation Measurement Principle

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

**Wikidata**: [openalex:W2999569445](https://www.wikidata.org/wiki/openalex:W2999569445)  
**Source**: https://4ort.xyz/entity/a-novel-tiered-type-permanent-magnet-spherical-motor-and-its-rotor-orientation-measurement-principle