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Vehicle steering control device and steering control method

A technology for steering control and vehicles, which is applied in the direction of automatic steering control components, steering mechanisms, steering rods, etc., which can solve problems such as action noise and achieve the effect of reducing impact

Active Publication Date: 2016-07-06
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to diagnose the state of the backup clutch mentioned above, it is necessary to engage and disengage the backup clutch frequently, but there is an operating sound when the backup clutch is engaged and disengaged.

Method used

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  • Vehicle steering control device and steering control method
  • Vehicle steering control device and steering control method
  • Vehicle steering control device and steering control method

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0028] Next, a first embodiment of the present invention (hereinafter referred to as the present embodiment) will be described with reference to the drawings.

[0029] (structure)

[0030] figure 1 It is a diagram showing a schematic configuration of a vehicle including a steering control device for a vehicle according to the present embodiment (in the following description, it may be described as a "steering control device").

[0031] A vehicle provided with the steering control device 1 of the present embodiment is a vehicle to which the SBW system is applied.

[0032] Here, in the SBW system, the driving control of the steering wheel motor is performed according to the operation of the steering operator (steering wheel) for steering operation by the driver of the vehicle, and the steering wheel is controlled to change the traveling direction of the vehicle. . The driving control of the steering wheel motor is performed in a state where the backup clutch inserted between...

no. 2 approach

[0202] Below, refer to Figure 1 to Figure 5 and use Image 6A second embodiment of the present invention (hereinafter referred to as the present embodiment) will be described. In addition, since this embodiment has the same structure as the said 1st Embodiment except the structure of the turning motor control part 18, description other than the turning motor control part 18 is abbreviate|omitted. In addition, the same code|symbol is attached|subjected to the same structure as said 1st Embodiment, and it demonstrates.

[0203] (structure)

[0204] Image 6 It is a block diagram illustrating a detailed configuration of the wheel motor control unit 18 .

[0205] Such as Image 6 As shown in , the turning motor control unit 18 includes a clutch control unit 40, a SBW turning command angle calculation unit 44, an EPS equivalent turning turning command angle calculating unit 58, a turning turning command angle switching unit 60, and a turning wheel position servo control unit ...

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PUM

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Abstract

A vehicle steering control apparatus and vehicle steering control method are provided, in which it is possible to suppress a steering state of a steering operation element from being different from the driver's intention, in starting the driving source. A backup clutch, which is switchable between a release state where a torque transmission path is mechanically decoupled and an engagement state where the torque transmission path is mechanically coupled, is set to the engagement state in starting the engine. When the steering torque detected after the engine starts becomes equal to or lower than a clutch release start torque Ts1, the backup clutch in the engagement state is switched to the release state. When the state of the backup clutch is set to the engagement state, a steering assistance torque of assisting the turning of the turning wheels is output from the turning motor for turning the turning wheels in response to the operation of a steering operation element. When the backup clutch in the engagement state is switched to the release state, the turning torque depending on a target turning angle in response to the operation of the steering operation element is output from the turning motor, so as to control driving of the turning motor.

Description

technical field [0001] The present invention relates to a method of turning a steering wheel to a target steering wheel angle corresponding to the operation of a steering operator by a driver of a vehicle by a steering wheel motor in a state where the torque transmission path between the steering operator and the steering wheel is mechanically separated. A steering control device and a steering control method for a vehicle. Background technique [0002] Conventionally, there is a steering control device in which the steering wheel is turned to a target corresponding to the operation of the steering operator by a steering wheel motor in a state where the torque transmission path between the steering operator (steering wheel) and the steering wheel is mechanically separated. runner angle. Such a steering control device forms a system (SBW system) generally called a steer-by-wire (SBW: Steer By Wire, sometimes described as "SBW" in the following description). [0003] The SBW...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D6/00B62D5/04B62D101/00B62D113/00B62D119/00
CPCB62D5/0463B62D5/003B62D5/0478B62D5/0484B62D6/002B62D6/04B62D6/10
Inventor 澁谷正树久保川范规宫坂匠吾楢崎拓也松下幸允
Owner NISSAN MOTOR CO LTD