SCI Satloc GPSteer, Руководство пользователя

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Calibrating GPSteer | Page 53
Part Number: 875-0139-000
Valve Block Calibration
The Needle Valve on the GPSteer Valve Block should be your first
and primary method of calibrating GPSteer.
Figure 4-1. Needle Valve on the GPSteer Valve Block.
Adjusting the Needle Valve allows you to adjust the flow rate from
high to low. A flow rate that is too
high will result in the vehicle
oscillating between the left and right sides of the target swath; a
flow rate that is too
low will result in a continual drift in one
direction (left or right) off of the target swath. The vehicle will
appear to wander around.
By adjusting the Needle Valve incrementally, you should find a flow
rate that is just right - just below the oscillation point.
Controller Calibration
Adjusting the controller settings should be your secondary
method of calibration. There are three basic controller settings to
be aware of:
• Sensitivity - Sensitivity determines the “look-ahead” point.
The “look-ahead” point is the distance ahead the vehicle aims
in order to steer itself onto the line. The distance is
GPSteer Installation Guide.book Page 53 Thursday, June 17, 2004 10:51 AM