Systematic identification of disturbance factors on electric characteristics of mechanical gearboxes

Abstract Failures of machine elements can cause critical breakdowns, e.g. bearing damage accounts for almost 20% all failures. Hence, monitoring is particular importance condition gearboxes. Therefore, new approaches based on electrical impedance analysis are proposed in literature, the measurement rolling load or with so-called sensory utilizable (SuME). For this approach, an signal transmitted through structure to be observed and resulting measured. With technique it possible detect loads damages not only bearings, but also entire gearbox. Another application method transmission signals gearbox themselves. However, uncertainty arises regard distinct these processes, mainly due parasitic capacitances. In contribution, disturbing factors measured a at different working points investigated. purpose, disturbance systematically identified used as basis full factorial experimental design screening operational characteristics The data obtained from tests analyzed identify correlations between experiments show speed- torque-dependent behavior capacitances These results further research SuME structure-integrated energy supply paths well evaluation related by reducing associated uncertainty.