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Auto tyre pressure determination method and device

A technology for automobile tires and determination methods, which is applied in tire measurement, tire parts, vehicle parts, etc., can solve the problems of wheel radius value noise, not taking into account, etc., and achieve the effect of improving accuracy and eliminating noise.

Active Publication Date: 2019-06-21
WUHAN UNIV OF TECH
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Problems solved by technology

However, the existing wheel radius analysis method does not take into account the influence of many special working conditions on the tire radius, such as vehicle acceleration and turning conditions, resulting in the obtained wheel radius value contains a lot of noise

Method used

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  • Auto tyre pressure determination method and device
  • Auto tyre pressure determination method and device
  • Auto tyre pressure determination method and device

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] Such as figure 1 Shown, a kind of automobile tire tire pressure determination method comprises the following steps:

[0057]1. Establish the wheel radius analysis model. The wheel radius analysis model contains an analysis of estimates in four directions. There are four cases of left and right analysis and front and rear analysis of the wheel respectively. That is, longitudinal: left, right; transverse: front axle, rear axle. Analyze the model by examining the input data separately, and then feed the individual input values ​​as filters.

[0058] Longitudinal Left Wheel Radius Analysis: G 12 =(R 1 -R 2 ) / R 0...

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Abstract

The invention discloses an auto tyre pressure determination method and a device, and the method comprises the following steps: 1) establishing a wheel radius analysis model to obtain a wheel radius estimation value analysis; 2) adopting Kalman filtering to filter the analysis results of the wheel radius estimation value to obtain the analysis results of the wheel radius after denoising; 3) conducting a tyre pressure analysis according to the stable wheel radius analysis results obtained in the step 2). The invention eliminates the noise of the tyre radius analysis by Kalman filtering, which improves the accuracy of the analysis results compared with the existing methods, and may realize the tyre pressure monitoring of air leakage of a plurality of tyres based on the analysis results.

Description

technical field [0001] The invention relates to automobile electronic technology, in particular to a method and device for determining tire pressure of automobile tires. Background technique [0002] Statistics show that the proportion of tire blowout in traffic accidents is as high as 60%. If the speed of the vehicle exceeds 160 km / h, the survival probability of the front wheel blowout is almost zero. [0003] 75% of punctures are caused by insufficient tire pressure. When the tire is under-inflated, the side of the tire is bent due to extrusion, which in turn causes the temperature of the tire to rise and cause a puncture. When the tire pressure is insufficient, the wheel radius will decrease, so wheel radius analysis is an important method to monitor the change of tire pressure. However, the existing wheel radius analysis methods do not take into account the influence of many special working conditions on the tire radius, such as vehicle acceleration and turning conditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/00B60R16/023
CPCB60C23/00B60R16/023
Inventor 钟毅
Owner WUHAN UNIV OF TECH
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