Vibration and modulation behavior of planetary gear sets in drive systems
Planetary gear sets are characterized by a high power density and potential for high gear ratios, making them widely used in drive systems for commercial vehicles, off-highway vehicles, and automotive applications.
High power density in planetary gear sets is achieved by the principle of internal power splitting, which distributes the power flow across multiple mesh engagements. However, these multiple mesh engagements lead to a more complex vibration and modulation behavior compared to simple spur gear stages. This complexity arises mainly from various phase shifts between the individual meshes and the relative movement of the excitation sources in relation to a fixed observer. Additionally, many drive systems consist of several gear stages, further increasing this complexity.
The vibration behavior and the closely related modulation behavior are key characteristics of drive systems. The motivation for analyzing the operating behavior of planetary gear sets stems from the core aspects of acoustic behavior, dynamic loading and condition monitoring. This work aims to expand the understanding of the vibration and modulation behavior of planetary gear sets within the context of a drive system through numerical simulations and analysis of measurement data.