| 摘要 |
<p>A controlled differential, particularly for exercising steering control of skid steered vehicles, comprises a compound planetary gear set (8) coupling two shafts (7a, 7b). Respective ring gears (10a) and (10b) turn with the shafts and mesh with a compound planet gear (11) in a planet carrier (12), the ratios of the number of gear teeth between each ring gear and the respective gear (13a) or (13b) of the compound planet being unequal so that when the planet carrier is stationary the two shafts are coupled through the differential to turn together in the same sense but with a speed difference, and controlled rotation of the planet carrier varies the speed difference between the shafts in accordance with the sense and speed of rotation of the planet carrier.</p> |
