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drives at different speed and check if it can reduce the lateral deviation from 1m to
several centimeters and manage to track the Line AB rapidly when the farming
vehicle moves forward for no more than 5m since it is switched to the auto driving
mode. If there is apparent vibration during line tracking process, reduce the driver
sensitivity. If the line tracking process is too slow, increase the sensitivity.
5.5.5.2
Commissioning of Operation Precision
Similar with the driver sensitivity, the higher the operation precision is, the higher the
straight line tracking precision is during normal operation. However, it is impossible
to improve the operation precision without limit. Based on the experiences in
installation and commissioning, the default value of forward operation precision is 0.6
(1.0m/s and less), 1.2 (1.0m/s~1.5m/s), 1.5 (1.5m/s~2.0m/s), 1.8 (2.0m/s~2.5m/s), 2.0
(2.5m/s~3.0m/s) and 2.2 (3.0m/s or above). During the commissioning, the difference
between the actual operation precision at different speed and its default value is
usually no more than 0.3m.
Calibrate the operation precision according to the following steps. Test the straight
line driving precision when the vehicle drives along Line AB at a speed of
1.0m/s~3.0m/s. During the process, observe if the lateral deviation change at different
speed is no more than 5 centimeter and the vehicle head does not have periodic
swaying. If the lateral deviation is no less than ±2cm or more at certain speed, and the
cycle of change takes a long time (more than 10 seconds), move to the right to
increase the operation precision value at certain speed.
5.5.5.3
Commissioning of Override Voltage
For some products with steering wheel override function, it can exit from the auto
driving mode by forcefully turn the steering wheel during turnaround in the farmland
by setting an override voltage. The override voltage is usually 0.7v~0.9v and within a
range of 0.6v~1.5v. The lower the override voltage is set, the easier the steering wheel
is overridden, but it may cause unintended override during the auto driving process. If
the user does not want to use this function, it is unnecessary to perform override
voltage commissioning.
When the driver sensitivity is calibrated, enter “Calibration” again and it will be
expected to see that the icon for driver sensitivity calibration turns green.
