Method and device for determining tire pressure of automobile tire

A car tire, a technology to determine the method, applied in the direction of tire measurement, tire parts, vehicle parts, etc., can solve the problem of wheel radius value noise, not taking into account, etc., to achieve the effect of improving accuracy and eliminating noise

Active Publication Date: 2021-02-19
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method and device for determining tire pressure of automobile tire
  • Method and device for determining tire pressure of automobile tire
  • Method and device for determining tire pressure of automobile tire

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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 a method and a device for determining tire pressure of an automobile tire. The method comprises the following steps: 1) establishing a wheel radius analysis model to obtain an analysis of an estimated value of the wheel radius; Filter to obtain the denoised wheel radius analysis result; 3) obtain a stable wheel radius analysis result according to step 2), and perform tire pressure analysis. The invention eliminates the noise of the tire radius analysis through the Kalman filter, so that the accuracy of the analysis result is greatly improved compared with the existing method, and the tire pressure monitoring of multiple tire leaks can be realized according to the analysis result.

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 & AuthorityPatents(China)
IPC IPC(8): B60C23/00B60R16/023
CPCB60C23/00B60R16/023
Inventor钟毅
OwnerWUHAN UNIV OF TECH