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Tire uniformity improvement through identification of composite uniformity parameter by using multivariate normal distributions

A technology of normal distribution and uniformity, which is used in the field of improving tire uniformity and can solve problems such as tire non-uniformity

Active Publication Date: 2017-05-10
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, conventional tire building methods have a high chance of producing tire unevenness

Method used

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  • Tire uniformity improvement through identification of composite uniformity parameter by using multivariate normal distributions
  • Tire uniformity improvement through identification of composite uniformity parameter by using multivariate normal distributions
  • Tire uniformity improvement through identification of composite uniformity parameter by using multivariate normal distributions

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Embodiment Construction

[0018] Reference will now be made in detail to embodiments, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and changes can be made to the embodiments without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. Accordingly, it is intended that aspects of the present invention cover such modifications and variations.

[0019] review

[0020] Example aspects of the invention relate to methods and systems for improving tire uniformity. More specifically, one or more characteristics of the composite uniformity parameter may be determined from uniformity summary data (eg, uniformity vectors) associated with multiple harmonics of the compos...

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Abstract

Methods and systems for improving the uniformity of a tire are provided. More specifically, one or more characteristics of a composite uniformity parameter can be determined from uniformity summary data (e.g. uniformity vectors) associated with a plurality of harmonics of the composite uniformity parameter. For instance, a peak to peak range of a composite uniformity parameter and / or a distribution of amplitudes of a composite uniformity parameter for a set of tires can be determined from uniformity vectors associated with selected harmonics of the composite uniformity parameter. According to example aspects of the present disclosure, the one or more characteristics of the composite uniformity parameter can be determined using multivariate normal distributions (e.g. bivariate normal distributions) of the uniformity summary data. Once identified, the one or more characteristics can be used to modify tire manufacture to improve tire uniformity.

Description

technical field [0001] The present invention relates to tire uniformity, and more particularly, to improving tire uniformity by using multivariate normal distributions to identify properties of composite uniformity parameters from uniformity summary data. Background technique [0002] Among certain quantifiable properties of a tire, tire non-uniformity is related to symmetry (or lack thereof) with respect to the tire's axis of rotation. Unfortunately, conventional tire building methods have a high chance of producing tire unevenness. During tire rotation, the inhomogeneities present in the tire structure generate periodically varying forces at the wheel axis. Tire non-uniformity is very noticeable as these force variations are transmitted as noticeable vibrations to the vehicle and the vehicle occupants. These forces are transmitted through the vehicle's suspension and can be felt on the seats and steering wheel of the vehicle, or as noise in the passenger compartment. Th...

Claims

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Application Information

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IPC IPC(8): G01M17/02
CPCG01M17/02B29D30/0061B29D2030/0066G01M1/16
Inventor W·D·马夫布伊
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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