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Consideration of hand torque deviation in vehicle steering system

A steering system and vehicle technology, applied in the field of vehicle steering systems, can solve problems such as the inability to utilize the steering function and the inability of the vehicle to always achieve steering feel.

Active Publication Date: 2021-09-14
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, it has been shown that the desired steering feel cannot always be achieved in actual operation of the vehicle
Furthermore, it has hitherto not always been possible to implement the desired steering function with every steering function and in particular with the steering support function

Method used

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  • Consideration of hand torque deviation in vehicle steering system
  • Consideration of hand torque deviation in vehicle steering system
  • Consideration of hand torque deviation in vehicle steering system

Examples

Experimental program
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Effect test

Embodiment Construction

[0067] exist figure 1 A vehicle steering system 10 , which is included in a vehicle 1 which is not otherwise specifically shown, is shown schematically. The vehicle steering system includes a steering control 12 in the form of a steering wheel. The steering wheel is coupled to a rack 16 via a steering rod 14 (which constitutes the shaft), so that rotation of the steering control 12 can be converted into a linear movement of the rack 16 (in figure 1 from left to right). The torque exerted by the driver on the rack 16 via the steering control element 12 and the steering rod 14 is referred to as the manual torque HM.

[0068] An electric motor (servomotor) 18 also acts on the toothed rack 16 via a mechanical coupling 20 shown very schematically. The rotation of the output shaft of the servo motor 18 is converted into a linear movement of the toothed rack 16 by means of a coupling device 20 . The torque generated by the electric motor 18 and acting on the toothed rack 16 is re...

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PUM

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Abstract

The invention relates to a vehicle steering system (10), comprising at least one electric motor (18) for forming a steering torque (MM), a steering control (12), by means of which a manual torque (MH) can be given by the driver; and a control device (24) having a first steering function (32) and at least one further steering function (34), wherein the first and further steering functions (32, 34) are each designed to form a control setpoint (S) for controlling the electric motor (18), and the first and further steering functions (32, 34) are each designed to form the control setpoint (S) taking into account a manual torque deviation (Hoff). The invention further relates to a method for operating such a vehicle steering system.

Description

technical field [0001] The invention relates to a vehicle steering system and a method for operating such a vehicle steering system. The vehicle can be a motor vehicle or especially a passenger car or a van. The vehicle steering system (also referred to herein simply as steering system or steering gear) is preferably electromechanical. Background technique [0002] An electromechanical steering gear for a motor vehicle usually includes a control unit and a servomotor, wherein the control unit calculates a control setpoint for the servomotor from input values. Input values ​​are, for example, the manual torque on the steering control (manual torque) and the vehicle speed. Angle-based input values ​​can also be set, as will be explained below. A further input value can be temperature, for example, in order to compensate for friction of the steering gear. [0003] Depending on the acquired control setpoint, the servomotor forms an electromotor-like steering torque for defle...

Claims

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Application Information

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IPC IPC(8): B62D6/00B62D5/04B62D137/00
CPCB62D6/007B62D5/04B62D6/008B62D5/0463B62D15/025
Inventor L.斯托尔策H.弗里克
Owner VOLKSWAGEN AG
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