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Steer-by-wire system and method for operating a steer-by-wire system

A technology of steer-by-wire and steering controller, which is applied to automatic steering control components, steering mechanisms, steering rods, etc., and can solve problems such as loss of tactile feedback

Active Publication Date: 2022-06-28
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus losing the tactile feedback from the road to the steering for the steering handle

Method used

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  • Steer-by-wire system and method for operating a steer-by-wire system
  • Steer-by-wire system and method for operating a steer-by-wire system
  • Steer-by-wire system and method for operating a steer-by-wire system

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Embodiment Construction

[0019] Before describing the present invention in detail, it should first be image 3 to elaborate on the prior art.

[0020] The steer-by-wire system 1 includes a steering handle 2 connected to an input shaft 3 . A handlebar moment M for detecting the driver is arranged on the input shaft 3 H The torque sensor 4 and for generating the feedback torque M at the steering handle 2 FF the actuator 5. In addition, the steer-by-wire system 1 comprises a steering controller 6 , power electronics 7 and an electric servomotor 8 , which are connected to a toothed rack 9 , for example, via a not-shown ball gear. The electric servomotor 8 is constructed with a rotor position sensor 10, from which the rotor angle signal The rack position can be inversely calculated. In steering controller 6 according to handle torque M H and other input variables, such as the speed of the vehicle, to determine the steering angle, which is to be adjusted by the servomotor 8 . For this purpose, the s...

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PUM

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Abstract

The invention relates to a steer-by-wire system (1) and a method for operating the steer-by-wire system (1), the steer-by-wire system comprising a steering handle (2), a sensor for detecting the driver's will, a steering controller ( 6), power electronics (7), electrical servomotor (8), rack (9) movable via the servomotor (8) and for generating a feedback torque at the steering handle (2) depending on the rack position (M FF ) actuator (5), wherein the steering controller (6) is configured to be based on the feedback torque (M FF ) minus at least one part.

Description

technical field [0001] The present invention relates to a steer-by-wire system and a method for operating a steer-by-wire system. Background technique [0002] Steer-by-wire systems are typically characterized in that the input shaft, which is connected to the steering handle, no longer has mechanical interventions, for example, to the toothed rack that realizes the steering movement. As a result, the haptic feedback from the road to the steering for the steering handle is lost. It is therefore known to provide an actuator (Aktor) (eg an electric motor) for generating a feedback torque, which generates a counter torque on the steering handle, in particular as a function of the set steering angle. The steering angle is usually determined here as a function of the rack position. [0003] Such a steer-by-wire system is known, for example, from DE 103 31 700 A1 or from DE 10 2004 001 318 A1. SUMMARY OF THE INVENTION [0004] Based on this technical problem, the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/00B62D5/04B62D6/00B62D15/02
CPCB62D5/006B62D5/0457B62D6/008B62D15/025B62D5/0463
Inventor J.M.舍费尔
Owner VOLKSWAGEN AG