1. Order structure

To situate the problem of digital control of electric machines, let's take a look at figure 1 , which shows the general control diagram for an electric actuator. It is structured in several fundamental blocks:

• the machine itself, which can be supplied with voltages ( v ) or currents (i ) and which supplies a torque (γ ) to a mechanical load (not studied here);

• sensors, in particular :

  • current,

  • speed,

  • on the machine;

• the static converter, whose elementary components (switches) always operate in switching mode;

• ...