# Proportional directional valve based automatic steering system for tractors

> Research article (Frontiers of Information Technology & Electronic Engineering, 2016) · cited 28× · AI/ML

**Wikidata**: [openalex:W2404651925](https://www.wikidata.org/wiki/openalex:W2404651925)  
**Source**: https://4ort.xyz/entity/proportional-directional-valve-based-automatic-steering-system-for-tractors