AutoTrac Universal (ATU) - StellarSupport - John Deere

Acquire Sensitivity
Determines how aggressively the vehicle acquires the
track. Higher gains result in more aggressive steering
Line Sensitivity – Heading
Line Sensitivity – Heading determines how aggressively
ATU responds to heading errors while the vehicle is on the
track. Heading error is the difference between the actual
direction of the vehicle and the track direction. Setting
this number higher causes the ATU to respond more
aggressively to match the actual vehicle direction and track
direction. Higher numbers result in more aggressive wheel
motion. Lower numbers can result in reduced accuracy.
This setting affects performance while on track only.
Line Sensitivity – Tracking
Line Sensitivity – Tracking determines how aggressively
ATU responds to tracking errors while the vehicle is on the
track. Tracking error is the distance between the location
of the vehicle and the desired track. Setting this number
higher causes the ATU to respond more aggressively to
match the vehicle location to the desired track. Higher
numbers result in more aggressive wheel motion. Lower
gains can result in reduced accuracy. This setting affects
performance while on track only.
Curve Sensitivity
Curve Sensitivity determines how aggressively ATU
responds to a curve in the track. If the tractor is turning
Original GreenStar Display
45-6
while acquiring the track. Lower gains give smoother entry
into the next track. Setting sensitivity too high can cause
vehicle instability; setting too low delays acquisition. This
setting affects performance while acquiring the track only
A—Heading Error
B—Tracking Error
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inside of the curve, set this number lower. If the tractor is
turning outside of the curve, set this number higher. This
setting affects performance in curve track only.
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