Electromechanical actuator with redundant electronic subsystem

The invention is based on an electromechanical actuator (10) for the steering rack (22), said actuator (10) comprises a stator (12) and a rotor (14). Furthermore, the actuator (10) an electronic system comprising at least (a first electronic subsystem having a first output stage (41), a first control unit (51) and a first rotor position sensor arrangement (61) and a second electronic subsystem having a second output stage 42), a second control unit (52) and a second rotor position sensor arrangement (62). Here, the first electronic subsystem and the second electronic subsystem are together with the stator (12) and the rotor (14) in operative connection. The essence of the invention is that the first electronic subsystem at least on a first circuit carrier plane (91) and a second circuit carrier plane (92) and the second electronic subsystem at least on the first circuit support plane (91) and a third circuit carrier plane (93) are arranged. Furthermore, the first, second and third circuit support plane (91, 92, 93) perpendicular to a rotation axis (15) of the rotor (14) and along the rotational axis (15) spaced from each other.