Agriculture Reference
In-Depth Information
passive implement guidance
active implement guidance
guidance line for implement
guidance line for tractor
same guidance line for tractor
and implement
GPS antenna
direction of side slope
direction of side slope
Fig. 4.10
Passive- and active guidance of towed implement by GPS (From Deere & Co., altered)
Fig. 4.11
Active guidance of a seeding machine on a side-slope. The GPS antenna on the roof of
the tractor is hidden (From Orthman Mfg.Co., altered)
yaw angle in the direction of travel (Fig.
4.9
) on side-slopes. The yaw angle varies
with the side-slope, and hence with it the position of the implement. Active imple-
ment guidance that relies on GPS can prevent this uncontrolled “
tailing out
”. This
is achieved by GPS controlled lengthening or shortening of the respective lower arm
of the three point linkage. Furthermore, devices as listed above sometimes are used
for implements on three point hitches as well.
