# Convenient gearbox fault diagnosis under random variable speeds: A motor current nonlinear harmonic approach

> Research article (Mechanical Systems and Signal Processing, 2025) · cited 16× · AI/ML

**Wikidata**: [openalex:W4406089481](https://www.wikidata.org/wiki/openalex:W4406089481)  
**Source**: https://4ort.xyz/entity/convenient-gearbox-fault-diagnosis-under-random-variable-speeds-a-motor-current-nonlinear-harmonic-approach