Zf Friedrichshafen Ag

Lars-Theodor Thole

Michael Beller

Axel Bolta

Stefan Lekon

Miguel De Carvalho

Gerrit Seevers

Mortiz Van Spankeren

A method for the active roll stabilization of a vehicle () by way of a roll stabilizer (). The roll stabilizer () includes a stabilizer rod (), a stabilizer housing () and a stabilizer motor (), arranged inside the stabilizer housing (), so that a first end of the stabilizer rod () is connected at to a wheel () of the vehicle and at a second end thereof is mounted to be rotated by way of the stabilizer motor (). The method including the steps of obtaining a first set-point value of a rod torque of the stabilizer rod (); obtaining a second set-point value of a motor rotation angle of the stabilizer motor (); limiting the second set-point value based on an absolute value and/or a gradient of the first set-point value; and inputting the second set-point value into a control sequence () as a guide magnitude.

Active roll stabilization with improved control by means of a set point limitation

A method for operating an adjustable roll stabilizer for a motor vehicle. The adjustable roll stabilizer has an actuator which relative to a rotational axis can be rotated through a system angle in order to twist two stabilizer sections connected to it about the rotational axis relative to one another. The stabilizer sections are each coupled to a respective wheel suspension at a radial distance away from the rotational axis, and, starting from a target angle to be set at the actuator and having regard to the actual system angle and other parameters of the adjustable roll stabilizer and/or the motor vehicle equipped with it, a position-rotational speed regulator determines a target motor torque on the basis of which a motor of the actuator is controlled, so that having regard to the target angle and the actual system angle, the target motor torque is checked for plausibility.

Method of operating an adjustable roll stabilizer

Actuator having a spindle drive () for a rear wheel steering system, including a spindle () with a spindle thread () and a spindle nut () with a nut thread (). The spindle thread () and the nut thread () are designed as displacement threads and the spindle nut () threadedly engages with the axially displaceable spindle () by way of the displacement thread. The spindle thread () and the nut thread () are braced against one another, in the longitudinal direction of the spindle (), by a bracing element (). The bracing element () is in the form of a threaded ring having an internal thread () which engages with the spindle thread (). The threaded ring () is supported relative to the spindle nut () by at least one spring element (), and the at least one spring element () is made of an elastomer.

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Lohne, Germany

Lars-Theodor Thole