Zapi EPS-AC0, Руководство пользователя, Страница: 11 / 95

AEMZP0BA - EPS-AC0 - User Manual Page - 11/95
3.3 Operational features
A list of eps-ac0 operational features follows below:
1) Static sensitivity boost in open loop (steering sensitivity increases for a slow
moving steering wheel).
2) Static numbness in closed loop (steering sensitivity decreases for handle steer
close to the straight-ahead direction).
3) Dynamic Numbness in open loop (steering sensitivity reduces when the truck
speed increases).
4) Dynamic Numbness on request in closed loop (steering sensitivity reduces
when the truck speed increases).
5) Truck speed reduces when the steering angle increases.
6) Alignment at the rest position in open loop application (to avoid the drift of the
steered wheel when travelling with released steering wheel).
7) Embedded PID algorithm for closed loop application (Twin Pot).
8) Embedded PID algorithm for automatic functions (AUTC).
9) Special Debugging & Troubleshooting system makes easier the fault catching.
10) Possibility to run in a stand-alone (not CAN Bus supported) configuration.
11) Motor control may be performed with or without encoder. Default choice is
without encoder. The adoption of a cheap and low-resolution encoder is
possible.
12) Redundant processing (two microprocessors aboard) fulfils the Category #3
requirement including the set-point comes via CAN Bus from a remote unit.
13) Redundant set point and feedback sensors fulfil the Category #3 requirement.
14) Redundant safety-contact fulfils the Category #3 requirement in a stand-alone
configuration.
3.4 Diagnosis
According to EN1175, most of the diagnoses deenergize steer and traction in less
then 100 msec. Few secondary alarm conditions require longer time for detection.
They too deenergize steer and traction: it is better to have delayed alarm than no
alarm at all.
Diagnosis is provided in two ways. The digital console can be used, which gives a
detailed information about the failure; the failure code is also sent on the Can-Bus.