Page – 10/75 AFMNA0AA – EPS-BLI HYG – User Manual
4 BLOCK DIAGRAM
A block diagram of the motor control implemented in the E-steering motor controller is
depicted below. It is an indirect field-oriented control for brushless AC motors.
Figure 4-1. Motor control.
4.1 Position control
In general, several steering modes are possible, the main being steer-by-wire and
steering assist. This manual deals with the steer-by-wire mode which implements a
position-control loop. In a position-control loop the angle of the steered wheel is one-to-
one matched with that of the steering handle.
Figure 4.1-1. Closed loop mode.
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