Vehicle steering control method and system

A steering control and vehicle technology, which is applied to automatic steering control components, steering mechanisms, steering rods, etc., can solve the problems of inconvenient and reliable steering control, complicated installation, and high cost, and achieve fast switching modes, parts saving, and easy installation. Effect

Active Publication Date: 2019-12-06
ZOOMLION HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are that the steering wheel is mechanically connected with the hydraulic steering system, and at the same time, an automatic steering controller needs to be set up separately, which involves many components, complicated installation, high cost, and the steering control is not convenient and reliable enough

Method used

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  • Vehicle steering control method and system
  • Vehicle steering control method and system
  • Vehicle steering control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Vehicle Steering Control Method

[0056] There is an angle sensor on the steering wheel, the angle sensor is used to detect the rotation angle of the steering wheel, the control unit calculates the target steering angle of the wheel according to the signal of the angle sensor; according to the difference between the target steering angle of the wheel and the actual steering angle of the wheel, the control unit outputs the corresponding steering ratio The direction valve controls the current, and the steering direction proportional valve controls the steering of the vehicle through the steering cylinder.

[0057] like image 3 As shown, the steering mode can be switched between normal manual steering mode, manual fast steering mode, and automatic steering mode.

[0058] (1) Normal manual steering mode

[0059] In normal manual steering mode, the driver uses the steering wheel to control the steering of the vehicle at a moderate speed. The angle sensor on the steering ...

Embodiment 2

[0087] Vehicle Steering Control System Realizing the Above-mentioned Control Method

[0088] like figure 1 As shown, the hydraulic steering system of the present invention includes a steering cylinder 1, a cylinder protection overflow valve 2, a steering proportional directional valve 3, a gear pump 4, a system pressure setting valve 5, a fuel tank 13, a pressure oil source pipeline 9, and an oil return pipeline 10 and 11, steering lines 7 and 8.

[0089] The steering proportional directional valve 3 is used to control the steering of the vehicle through the steering cylinder 1 , and the steering proportional directional valve 3 is connected to the steering cylinder 1 . When the left solenoid valve of the proportional directional valve 3 is energized and the right solenoid valve is de-energized, the pressure oil from the pipeline 9 passes through the proportional valve directional valve 3 and the pipeline 7 to the left cavity of the steering cylinder 1, and the vehicle turns ...

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PUM

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Abstract

The invention relates to a vehicle steering control method and system. An angle sensor is arranged on a steering wheel and used for detecting the rotating angle of the steering wheel. A control unit calculates the wheel target steering angle according to the signal of the angle sensor. According to the differential value between the wheel target steering angle and the wheel actual steering angle,the control unit outputs corresponding steering proportional direction valve control current, and a steering proportional direction valve controls steering of a vehicle through a steering oil cylinder. The system is convenient to install, steering control is convenient and reliable, and the cost can be reduced effectively.

Description

technical field [0001] The invention relates to a vehicle steering control method and system. Background technique [0002] Automatic steering control system is one of the key technologies to realize automatic navigation of agricultural machinery. At present, the tractors and harvesters produced by the OEMs are mechanically connected with the steering wheel and the steering gear. The steering gear and the steering cylinder are connected through hydraulic pipelines. The direction of steering wheel rotation controls the flow direction of hydraulic oil in the steering gear, thereby controlling the steering direction of the vehicle. If the automatic steering function of navigation is added on the basis of this transmission steering control method, two schemes are commonly used. One is to change the steering wheel to an electric steering wheel, and the automatic steering system controls the rotation of the steering wheel; the other is to add an automatic steering valve to the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/065B62D5/30B62D5/08B62D5/09B62D6/00B62D113/00B62D101/00B62D137/00
CPCB62D5/065B62D5/08B62D5/09B62D5/30B62D6/001B62D6/002
Inventor 周菁高一平唐明黄振宇
Owner ZOOMLION HEAVY MASCH CO LTD
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