Compensate Steering Sensitivity According To Wheel Angle Range - Danfoss PVED-CLS User Manual

ENGINEERING TOMORROW
Danfoss strongly recommends that the Steering programs are set up to ensure safe operation at any vehicle speed.
this implies that:
1. For every vehicle speed dependent steering program the configurable points shall result in a graph with
positive slope.
2. If a steering program is configured not to be vehicle speed dependent, it must be ensured that the configuration
allows safe driving at all possible vehicle speeds.
3. Unused steering programs shall be programmed with default values.
Failure to comply with the above rules may render this function inoperable or lead to undesirable steering
behavior!
11.4.1

Compensate steering sensitivity according to wheel angle range

PVED-CLS offers a feature to keep the steering sensitivity fixed if the physical max wheel angle range is changed due to
adding/changing tires.
The native steering program sensitivities for the steering programs are defined for the native physical wheel angle range
at programming time. The native wheel angle range is set by the parameter, 'Native wheel angle range for AUX steering
programs', P3742. The parameter shall not be modified unless new steering programs are created. This will ensure that
the same aggressiveness in the steering system is maintained, even if the max angles change.
When the physical max wheel angle endpoints are changed by manual or WAS auto-calibration by one of the below
conditions
•
If WAS interface type in P3244 is selected as CAN and Automatic adjusted maximum steer angle to left side and
right side, parameters P3193 and P3195 respectively, are changed OR
•
If WAS interface type in P3244 is selected as Analogue WAS and Automatic adjusted maximum steer angle to
left side and right side, parameters P3223 and P3225 respectively, are changed
Important
The Programmed lock to lock will not match the definition in EEPROM unless the actual wheel angle range matches
'Native wheel angle range for AUX steering programs'.
Important
If steering sensitivity compensation is not required, the feature can be disabled by setting the parameter 'Native wheel
angle range for AUX steering programs, P3742 to 0 deg or to a value equal to or larger than 179deg.
Furthermore, if parameter 'WAS Interface' P3244, is configured to no wheel angle sensor present then this feature will
be disabled.
Name
100 | © Danfoss | August 2018
Description of parameter Range
AQ00000211