Method for determining a rack force for a steering apparatus and steering apparatus

A technology of steering device and rack force, which is applied to steering mechanism, steering rod, automatic steering control components, etc., can solve problems such as driver's uncomfortable steering feeling, and achieve the effect of reducing interference

Active Publication Date: 2014-06-25
ROBERT BOSCH AUTOMOTIVE STEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the setpoint steering torque is determined with the aid of interfering forces, in many cases an unpleasant steering sensation results for the driver

Method used

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  • Method for determining a rack force for a steering apparatus and steering apparatus
  • Method for determining a rack force for a steering apparatus and steering apparatus
  • Method for determining a rack force for a steering apparatus and steering apparatus

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Embodiment Construction

[0033] figure 1 A control and / or regulation device, referred to as controller 1 , is shown in FIG. 1 , which is assigned to a steering device 2 . Arranged in the controller 1 is a computer (for example a microcomputer or microcontroller) with a processor 3 which is connected via a data line 4 , eg a bus system, to a memory element 5 . The controller 1 is connected to a motor 7 via a signal line 6 , so that the motor 7 can be controlled and / or regulated via the controller 1 , and the motor 7 is designed as an electric motor, for example, and acts on a torsion bar 9 via a transmission 8 . Arranged on the torsion bar 9 is a steering element 10 , such as a steering wheel, by which a torque can be applied to the torsion bar 9 by actuating the steering element 10 .

[0034] The steering device 2 also includes a steering gear 11 , which is designed, for example, as a rack-and-pinion steering gear. However, the steering gear 11 can also be designed as a ball recirculating gear or a ...

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Abstract

The invention relates to a method (21) for determining a rack force (FR) for a steering apparatus (2) of a vehicle, in which the rack force (FR) is determined as a function of a steering angle variable which characterizes an actual wheel steering angle (deltaRW) or a set point of the wheel steering angle (deltaRW).; In order to specify a method (21) for determining a rack force (FR) with which a steering torque set point can be generated, which imparts a convenient steering feel to the driver and the steering apparatus nevertheless gives the driver the most realistic possible feedback about the state of movement of the vehicle, according to the invention the method (21) comprises: determining a variable which characterizes a lateral force (Fyv) on a shaft of the steering apparatus (2), and determining the rack force (FR) as a function of the lateral force, wherein the determination of the rack force (FR) comprises filtering by means of a signal processing element (35) having a proportional-differential transfer function.

Description

technical field [0001] The invention relates to a method for determining a rack force of a steering system of a vehicle, in which method the rack force is determined from a steering angle parameter which characterizes an actual wheel steering angle or a desired value of the wheel steering angle. The invention also relates to a control and / or regulation device for such a steering device and a corresponding steering device. Background technique [0002] In modern steering systems, for example in an electric power steering system (EPS) or a steer-by-wire system (SbW), the setpoint steering torque is determined. A steering element of the steering device, for example a steering torque on a steering wheel, is adjusted according to a setpoint steering torque in order to support or counteract the force exerted by the driver when the vehicle is turning. It is known to ascertain the setpoint steering torque from the rack force. [0003] A method for determining the forces acting on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D6/00
CPCB62D6/008B62D15/0225
Inventor R·格罗伊尔T·沃纳J·施特雷克尔
Owner ROBERT BOSCH AUTOMOTIVE STEERING
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