While the Simscape™ Driveline™ library contains a Planetary Gear, you can create your own custom
planetary gear using the Planetary Subcomponents sublibrary.
sdl_gear_planetary_custom example model combines
three Sun-Planet Bevel subgears into
a masked subsystem to model a coupled planetary gear train. The model
uses an Ideal Angular Velocity Source to
place a fixed velocity demand on the gearbox input, while damping
the system on both the input and output driveshafts with Rotational Damper blocks.
Custom Planetary Gear System and Subsystem