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Steering control apparatus and method

A technology of steering control and controller, which is applied in the direction of automatic steering control components, steering mechanisms, steering rods, etc., and can solve problems such as increased steering force, difficulty for the driver to respond quickly, and hindrance to the quick operation of the steering wheel

Active Publication Date: 2010-09-15
NISSAN MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in this conventional vehicle steering device, the road surface reaction force measured by the steering reaction force sensor is transmitted to the steering reaction force. If the tires sink due to uneven road surface (such as potholes), the signal from the steering reaction force sensor will hinder the rapid operation of the steering wheel, which is undesirable (see Figure 7 )
If the embodiment of the present invention is not applied, this situation occurs because the steering force suddenly increases due to the addition of the steering reaction force to cancel the influence from the road surface, which makes driving Difficulty in responding quickly

Method used

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  • Steering control apparatus and method
  • Steering control apparatus and method
  • Steering control apparatus and method

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Embodiment Construction

[0024] figure 1 is an overall system diagram showing a vehicle steering apparatus according to a first embodiment of the present invention. Figure 2A-2C A detailed sectional view of each part of a clutch, a cable column, and a torque sensor of the vehicle steering device according to the first embodiment of the present invention, respectively. The vehicle steering device includes a reaction force device, an auxiliary device, an electronically controlled steering device and a controller.

[0025] The reaction device has a steering angle sensor 1 , an encoder 2 , a torque sensor 3 and a reaction motor 5 .

[0026] The steering angle sensor 1 is a device for detecting the angular position of the steering wheel 6 . The steering angle sensor 1 is provided on a column shaft 8 a connecting the cable column 7 and the steering wheel 6 . That is, the steering angle sensor 1 is interposed between the steering wheel 6 and the torque sensor 3 and is not affected by angle changes due t...

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Abstract

A vehicle steering control device is provided that suppresses changes in the steering force accompanying the shock transmitted from the road surface during the steering wheel return operation. The vehicle steering device is a steer-by-wire steering device where a steering wheel receiving the steering input which is transmitted electronically to the steering unit which turns steered road wheels ofthe vehicle. The steering reaction force correction (Gf x F) corresponding to road surface reaction force F is applied to the steering wheel. The device includes a turn / return sensor that senses turn / return of the steering wheel, and during return of steering wheel, road surface reaction force feedback gain Gf is made smaller than the initial turning.

Description

Background technique [0001] The invention relates to the technical field of vehicle steering control, in particular to an electronic steering control system. [0002] As in the conventional steer-by-wire system described in Japanese Kokai Patent Application No. Hei 10[1998]-217988, a steering reaction correction amount proportional to a detected road surface reaction force is calculated, and the steering reaction correction amount is added to into the steering reaction in order to communicate road conditions to the driver. [0003] However, in the vehicle steering device of the prior art, for example, when the vehicle makes an L-shaped turn and the steering wheel is required to respond quickly, or when the steering wheel is turned back due to the unevenness of the road surface, the impact force from the road surface is transmitted. In the case of the steering wheel, there will be a sudden instantaneous steering force, which may hinder the steering wheel from returning to norm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D6/00B62D5/04B62D101/00B62D117/00B62D119/00B62D121/00B62D137/00
CPCB62D6/008B62D5/0466B62D5/006
Inventor 原一男江口孝彰
Owner NISSAN MOTOR CO LTD
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