The single stage and single row of gear rings do not move, the sun wheel is the driving wheel, and the planetary gear is driven. How can the speed of the planetary gear and the planetary frame be compared?
The rotation of a planetary gear is usually not calculated, because it does not usually make the planetary wheels output. It is of little significance to calculate.
Then the drive ratio of the outer center to the planet gear is 1+z1/z2. You know the speed of the planet rack and you know the speed of the outer center wheel and the transmission ratio.
If you have this problem, you can explain it much better. Suppose the number of the inner center teeth is Z1, and the number of teeth on the outer center wheel (what you call the sun wheel) is z2,
