ABSTRACT

The planetary gear trains (PGTs) shown in Figure 25.1 are from the group of negative-ratio PGTs (see Figure 2.4), as their basic speed ratio is negative, which is given by https://www.w3.org/1998/Math/MathML"> i 0 = ω 1 r e l ω 3 r e l = ω 1 − ω H ω 3 − ω H < 0 . https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429458521/48698ab4-fcf2-474d-9d24-cd80e7124439/content/equ25_0005.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>