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Commercial vehicle driving neutral position self-learning method

A self-learning, commercial vehicle technology, applied in the field of mid-position self-learning of commercial vehicle driving, can solve the problems of left and right serpentine, unstable steering wheel, driver's driving fatigue, etc., to eliminate detection errors, improve driving feel, and reduce driving burden Effect

Inactive Publication Date: 2021-09-03
SHAANXI WANFANG AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the active returning force, the car that originally ran straight will run off, and it is necessary to keep the steering wheel with hands to keep the vehicle going straight, which will cause driver fatigue; and due to the returning force and the driver making the vehicle The force to keep going straight is opposite, so in actual situations, due to bumpy roads or other reasons, the steering wheel of the vehicle will become unstable, resulting in the vehicle not being able to go straight or snaking left and right, and serious cases may be dangerous

Method used

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  • Commercial vehicle driving neutral position self-learning method
  • Commercial vehicle driving neutral position self-learning method
  • Commercial vehicle driving neutral position self-learning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] This example is mainly divided into two parts: vehicle running bias detection; medium self-learning.

[0044] The first part of the vehicle running offset detection method is as follows:

[0045] Before driving, the initial steering wheel corner AR0, the initial vehicle speed VR0, the initial steering wheel torque Tqr0, the initial torque duration T0, the initial torque duration T0 are pre-set, and recorded.

[0046] Where: Ar0 ​​(calibrate the initial steering wheel corner);

[0047] VR0 (calibration speed);

[0048] TQR0 (calibration initial steering wheel torque)

[0049] T0 (calibration of the initial torque duration)

[0050] After the vehicle starts driving, real-time detection of the real-time steering wheel corner AR1, real-time vehicle speed VR1, real-time steering wheel torque TQR1, real-time torque duration T1.

[0051] Medium self-learning status includes p1 (Learning), P2 (no learning).

[0052] The main determination conditions for entering the median self-learn...

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Abstract

The invention discloses a commercial vehicle driving neutral position self-learning method, and aims at the problems that after an electric power steering system of a commercial vehicle is loaded, the vehicle deviates, a steering wheel is unstable, finally, the vehicle cannot go straight or is snakelike left and right, and the driver always manually corrects and resets the steering wheel for a long time, and driving fatigue is generated. Whether the vehicle deviates or not is judged by detecting the steering wheel turning angle, the vehicle speed, the steering wheel torque and the torque duration time in the vehicle running process, and the neutral position of the steering wheel turning angle is adjusted in real time after it is judged that the vehicle deviates indeed. Therefore, the EPS does not generate redundant steering wheel aligning torque due to changes before and after the load of the vehicle, and the loaded vehicle does not deviate due to the load, so that the driving burden of the driver and vehicle safety accidents caused by the deviation of the vehicle can be obviously reduced, and the driving hand feeling is also improved.

Description

Technical field [0001] The present invention belongs to the field of automotive technology, and more particularly to a method of learning in commercial vehicle driving. Background technique [0002] With the development of automobile technology and the increase in automotive energy conservation requirements, electric power steering system EPS (later referred to as EPS) has started a wide range of substitution hydraulic power steering systems HPS (after referred to as HPS) in passenger cars, but At present, the mainstream of commercial vehicles turned to system or HPS. According to data statistics, EPS average fuel consumption only accounts for 0.5% of total fuel consumption, while traditional HPS accounts for 3% of total fuel consumption, and EPS has a significant energy-saving advantage. And for future business cars, the use of EPS in commercial vehicles is also an inevitable trend. [0003] For the current situation, the electric power steering system of commercial vehicles is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCB62D5/0463B62D5/0466B62D5/0481
Inventor 张健许斌田家乐李付兵熊松林刘小娜
Owner SHAANXI WANFANG AUTO PARTS
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