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Method for actuating the vibration damper of a wheel suspension

A technology of wheel suspension and shock absorber, applied in suspension, elastic suspension, vehicle parts, etc., can solve problems such as insufficient road image accuracy

Active Publication Date: 2019-02-05
VOLKSWAGEN AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The basic problem when implementing preview functionality based on image data is that the accuracy of road surface images is sometimes insufficient

Method used

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  • Method for actuating the vibration damper of a wheel suspension
  • Method for actuating the vibration damper of a wheel suspension
  • Method for actuating the vibration damper of a wheel suspension

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Embodiment Construction

[0029] figure 1 A motor vehicle 1 is shown, the wheel suspension of each wheel 2 having a controllable shock absorber 3 via which the individual wheel 2 supports a vehicle structure 4 . The controllable damper 3 can be embodied as a semi-active or active damper. exist figure 1 In , for example, for a semi-active shock absorber, its associated control valve 5 is indicated. The control of the damper 3 with respect to the damping rate is carried out by a control device 6 which can be designed, for example, as described in DE 10 2008 053 ​​007 A1.

[0030] For example, three acceleration sensors 7 are arranged on the vehicle structure 2 . These acceleration sensors may be implemented as vertical acceleration sensors, but are not limited to vertical acceleration sensors. Thus, from the position of these acceleration sensors on the vehicle structure 2 and based on knowledge of the vehicle's geometry, a vertical acceleration can be calculated for each point on the vehicle from th...

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PUM

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Abstract

The invention relates to a method for actuating the vibration damper of a motor vehicle wheel suspension, having the steps of generating data which represents the topography of the roadway lying in front of the motor vehicle (S1), analyzing the data with respect to roadway unevenness, adjusting the vibration damper while taking into consideration the evaluation of the roadway unevenness, wherein the amplitude spectrum of the roadway unevenness is ascertained from the data (S2, S3), and generating a specification for the damping of the vibration damper on the basis of the amplitude spectrum (S4).

Description

technical field [0001] The present invention relates to a method of controlling a shock absorber of a wheel suspension of a motor vehicle comprising generating data representative of the topography of a road surface in front of the motor vehicle; analyzing the data with respect to unevenness of the road surface; Set the shock absorber for the analyzed case. Background technique [0002] Unlike passive shock absorbers, controllable shock absorbers can change the damping rate while the vehicle is running. With semi-active shock absorbers, the damping force can be influenced by controlling the overflow valve. The auxiliary energy used for this purpose is used here exclusively for the valve controller for the purpose of changing the phase of energy absorption and energy output via the shock absorber. In active shock absorbers, however, the auxiliary energy is used to damply dissipate the desired force in any direction or to introduce energy to generate the desired force. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/08B60G17/0165
CPCB60G17/0165B60G2400/102B60G2400/204B60G2400/821B60G2401/142B60G2500/10B60G17/08
Inventor F.贝雷克K.谢迪S.库克拉
Owner VOLKSWAGEN AG
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