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AFMNA0AA – EPS-BLI HYG – User Manual
U
Quasi-redundant is intended as a device composed of two separated
(independent) sensors with a common supply source. With a simple change in
the BOM, the E-steering motor controller may be configured for a fully redundant
sensor (i.e. two supply sources).
5.4.2 Force
feedback
A force-feedback device must be installed on the steering command axle as to
dynamically modify the force needed to act on it. The friction at the steering command
will be real-time adjusted according to either a Zapi basic implementation or a
customer’s requirement.
For actuating this function, a current controlled friction device is required. Two
technologies are known: magnetic fluid and proportional electromagnetic brakes (a not
representative example for an arrangement with a magnetic brake is shown in figure
5.4.2-1). No preference or reliability evaluation is given in this manual about the
different technologies. Whatever is the OEM’s final choice, the current in the friction
device must stay equal or lower than 1 A.
Figure 5.4.2-1 Example for a force-feedback assembly (not representative).
