Control unit for a steer-by-wire steering system of a motor vehicle

Abstract

The invention relates to a control unit (4) for a steer-by-wire steering system (1) of a motor vehicle (2), which can be coupled to a steering device (45) so that a steering movement of the steering device (45) is converted into a signal representing this steering movement and transmitted to a road wheel actuator (6) for the implementation of the steering movement by the vehicle wheels (7) of the vehicle (2), wherein the control unit (4) has a telescopic extension (46) with an extension carrier (138) and a telescopic slide (137) that is translationally displaceable relative to the extension carrier (138), wherein a steering shaft (43) is rotatably mounted in and / or on the telescopic slide (137), and within the telescopic slide (137) a rotation angle limiter (44) and an energizable force feedback actuator (41) with an energizable electric motor (102) and an energizable brake are located. (107) is orderedand a first linear bearing (136a) and at least one second linear bearing (136b) spaced apart in the extension direction are arranged between the telescopic slide (137) and the extension support (138), wherein the structure-borne sound-transmitting contact area of ​​the first linear bearing (136a) or the second linear bearing (136b) between the telescopic slide (137) and the extension support (138) is less than 5 cm² per linear bearing (136a, 136b) and less than 30 cm² for both linear bearings (136a, 136b).

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