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Method for operating a steering device, and steering device

A technology of steering device and steering assistance, which is applied in the direction of steering mechanism, transportation and packaging, electric steering mechanism, etc., and can solve problems such as vehicle instability, difficulty in driver controllability, and difficulty in adjustment technology

Pending Publication Date: 2020-07-24
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the known method is that the targeted steering via the yaw moment is rather difficult in terms of adjustment technology
Furthermore, the individual braking processes of the individual wheels can lead to instability of the vehicle, which in this case also makes control difficult for the driver

Method used

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  • Method for operating a steering device, and steering device
  • Method for operating a steering device, and steering device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0016] exist figure 1 A part of a steering device 1 with a steering handle 2 with a torque sensor 3 is shown in . In addition, the steering device 1 has a steering controller 4 , a power electronics system 5 and an electric motor 6 , which is connected to a rack 7 , for example via a gear not shown. In addition, the steering device 1 has an electronic stability program controller 8 and a brake controller 9 , which actuates a brake (not shown).

[0017] During normal operation of the steering device 1 , the driver's hand torque M on the steering handle 2 H is detected and transmitted to the steering controller 4 . Depends on hand torque M H As well as further state variables such as, for example, the speed V, the steering controller 4 detects the servo torque to be applied by the electric motor 6 . The steering controller 4 then generates control signals for the power electronics 5 , which then energize the electric motor 6 .

[0018] In this case, steering controller 4 mo...

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PUM

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Abstract

The invention relates to a method for operating a steering device (1) of a motor vehicle comprising steering assistance, wherein the functionality of the steering assistance is monitored, the steeringassistance is reduced or deactivated in the event of a fault, a lateral acceleration (ay) of the motor vehicle is detected or determined when reducing or deactivating the steering assistance, and a longitudinal deceleration (-ax) is set automatically until the lateral acceleration (ax) falls below a threshold value (ag). The invention also relates to a corresponding steering device (1).

Description

technical field [0001] The invention relates to a method for operating a steering device and a steering device. Background technique [0002] Steering devices with steering assistance have been known for a long time. In this case, for example, the servomotor applies an additional steering force to the rack or an additional steering torque to the steering column, so that the driver only has to apply a low hand torque on the steering handle. In the event of a fault, for example due to a hardware failure, the steering assistance must be reduced and in extreme cases completely switched off. At such moments, the driver must exert an increased hand torque in order to maintain the lane during the steering process. Here, the necessary hand torque depends on speed, curvature and axle kinematics (Achskinematik, sometimes called axle kinematics) and can become so great that some drivers can only master the necessary hand torque with difficulty. moment. [0003] From DE 10 2013 202 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B60W20/50
CPCB62D5/0484B60W20/50B60W50/029B62D5/04B62D6/00B60W2520/125B60W2720/106
Inventor I.施维特
Owner VOLKSWAGEN AG