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Vehicle steering control device

A technology for control devices and vehicles, which is applied to automatic steering control components, vehicle components, steering mechanisms, etc., and can solve problems such as the lack of popularization of steering by wire

Active Publication Date: 2014-10-01
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Issues such as failsafe are a factor in why steer-by-wire has not yet become popular

Method used

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  • Vehicle steering control device
  • Vehicle steering control device
  • Vehicle steering control device

Examples

Experimental program
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Effect test

Embodiment Construction

[0042] The basic idea of ​​the embodiment of the present invention is to assign the rotational speed range in which the clutch idling state continues to the steer-by-wire control, focusing on the relationship between the connection or disconnection of the clutch between the steering shaft and the steering shaft and the shaft speed. For example, the rotation of the steering shaft is normally controlled so that the clutch is idling. Steer-by-wire control can be provided by disconnecting the steering shaft from the steering shaft through clutch slippage. On the other hand, the clutch is engaged when the rotational speed of the steering shaft decreases. It secures torque transmission from the steering shaft to the steering shaft, and imparts fail-safe performance to the steering control device.

[0043]In the steering control devices that have been proposed, it is only disclosed that the clutch is connected when there is an abnormality. In such a typical configuration, there is ...

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PUM

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Abstract

The invention provides a vehicle steering control device. The vehicle steering control device comprises a steering unit which is provided with an input shaft; a steered unit which is provided with an output shaft; a clutch which is adapted for connection and disconnection between the input shaft and the output shaft; and a control unit which controls the steered unit on the basis of an input from the steering unit. The control unit controls the rotation of the output shaft so that the clutch rotates freely when the input shaft rotates. The clutch can be configured so that the clutch rotates freely when the rotational speed of the output shaft is higher than or equal to the rotational speed of the input shaft and so that the clutch is engaged when the rotational speed of the output shaft is lower than the rotational speed of the input shaft.

Description

technical field [0001] The invention relates to a steering control device for a vehicle. Background technique [0002] For example, in Patent Document 1, it is described that the steering mechanism is mechanically separated from the steering wheel by using a disconnection mechanism that switches the connection and disconnection between the input shaft and the output shaft to switch between power transmission and non-transmission, and drives the steering according to the steering amount. Steering manipulation control device for the steer-by-wire system of the mechanism. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2010-188930 [0004] In a steer-by-wire vehicle, it is preferable to implement appropriate failure countermeasures so that steering can be performed even when the steer-by-wire system fails. Typically, multiple electrical systems and mechanical backup systems are proposed for this purpose. By multiplexing the electrical system, even if an abnormality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00
CPCB62D5/043B62D5/003B62D5/001
Inventor 关谷义秀
Owner TOYOTA JIDOSHA KK
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