Abstract: A spring-absorber system for a wheel suspension of a motor vehicle includes a suspension spring with a spring constant kT and an absorber filled with a fluid and mounted in parallel to the suspension spring. The spring-absorber system also includes at least two additional spring modules via which a total spring constant kG of the spring-absorber system can be varied.

Abstract: A height-adjustable spring arrangement for a vehicle includes a bearing spring, a first limiting cylinder with a first limiting cylinder pot and a first limiting piston, a second limiting cylinder with a second limiting cylinder pot and a second limiting piston, and a guide cylinder with a guide cylinder pot, a displaceable guide piston in the guide cylinder pot and a guide piston rod fixed on the guide piston and extending out of the guide cylinder pot along a longitudinal axis of a bearing spring and through the bearing spring. The guide piston rod is displaceable by the first and second limiting cylinders such that a spring preload acting on the bearing spring and a negative spring path of the bearing spring remain constant as a result of a height adjustment.

Abstract: A height-adjustable spring arrangement for a vehicle includes a bearing spring, a first limiting cylinder with a first limiting cylinder pot and a first limiting piston, a second limiting cylinder with a second limiting cylinder pot and a second limiting piston, and a guide cylinder with a guide cylinder pot, a displaceable guide piston in the guide cylinder pot and a guide piston rod fixed on the guide piston and extending out of the guide cylinder pot along a longitudinal axis of a bearing spring and through the bearing spring. The guide piston rod is displaceable by the first and second limiting cylinders such that a spring preload acting on the bearing spring and a negative spring path of the bearing spring remain constant as a result of a height adjustment.

Abstract: A spring-absorber system for a wheel suspension of a motor vehicle includes a suspension spring with a spring constant kT and an absorber filled with a fluid and mounted in parallel to the suspension spring. The spring-absorber system also includes at least two additional spring modules via which a total spring constant kG of the spring-absorber system can be varied.

Abstract: A method for the operation of at least one actuator for a force controller of a device, for which a user of the device is provided with a haptic feedback message about at least one operating state of the device by a force, which is predetermined in its strength and acts by way of at least one actuator on the force controller, when the force controller is brought by the user to at least one predetermined point on a track of movement of the force controller. The at least one actuator is controlled in such a way that the strength of the force acting by way of the at least one actuator on the force controller is reduced after another predetermined period of time.

Abstract: A method for the operation of at least one actuator for a force controller of a device, for which a user of the device is provided with a haptic feedback message about at least one operating state of the device by a force, which is predetermined in its strength and acts by way of at least one actuator on the force controller, when the force controller is brought by the user to at least one predetermined point on a track of movement of the force controller. The at least one actuator is controlled in such a way that the strength of the force acting by way of the at least one actuator on the force controller is reduced after another predetermined period of time.

Abstract: A method for controlling a device, in which a control command for controlling the device is produced via a force controller that is actuated by a user. A control unit of the device controls at least one actuator in such a way that the at least one actuator provides the user, at a predetermined path point of the force controller, with a feedback message about at least one state of the device at the force controller. The control unit further controls the at least one actuator in such a way that, in case of a change in the predetermined path point of the force controller to a changed path point lying in the direction of deflection of the force controller in front of the predetermined path point, the at least one actuator shifts the force controller to a desired path point.