Method for dynamically determining the longitudinal force of a tyre

文档序号:1131638 发布日期:2020-10-02 浏览:16次 中文

阅读说明:本技术 用于动态确定轮胎纵向力的方法 (Method for dynamically determining the longitudinal force of a tyre ) 是由 F·舒特 N·弗雷茨 于 2019-03-28 设计创作,主要内容包括:用于动态确定轮胎纵向力的方法,其中借助设于轮胎胎圈(32,34)中的加速度记录仪(40)来确定轮胎加速度大小,其表征在轮胎胎圈(32,34)中出现的加速度,其中从所确定的轮胎加速度大小起借助处理器单元来确定轮胎接地面切入点(64)与加速度顶点(72)之间的第一时间间距或角度间距<Image he="63" wi="123" file="DDA0002635781420000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>和加速度顶点(72)与轮胎接地面出离点(66)之间的第二时间间距或角度间距<Image he="64" wi="145" file="DDA0002635781420000012.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>其中由处理器单元(20)从在这两个时间间距或角度间距<Image he="63" wi="223" file="DDA0002635781420000013.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>之间获得的对称偏移推断出表征轮胎纵向力的轮胎纵向力参数的数值和/或方向。(Method for dynamically determining a longitudinal force of a tire, wherein a tire acceleration magnitude is determined by means of an acceleration recorder (40) arranged in a tire bead (32,34), which characterizes an acceleration occurring in the tire bead (32,34), wherein a first time or angular distance between a tire contact patch entry point (64) and an acceleration apex (72) is determined from the determined tire acceleration magnitude by means of a processor unit And acceleration apex (72) to tire contactA second time or angular distance between the departure points (66) Wherein the processor unit (20) is used to determine the time interval or the angle interval between the two time intervals The obtained symmetric offset between deduces the value and/or direction of the longitudinal force parameter of the tyre characteristic of the longitudinal force of the tyre.)

1. Method for dynamically determining a longitudinal force of a tire, wherein a tire acceleration magnitude is determined by means of an acceleration recorder (40) arranged in a tire bead (32,34), said tire acceleration magnitude being characteristic of an acceleration occurring in said tire bead (32,34), wherein a first time or angular distance between a tire contact patch entry point (64) and an acceleration apex (72) is determined by means of a processor unit (20) from said determined tire acceleration magnitudeAnd a second time or angular separation between the acceleration peak (72) and the tire contact patch exit point (66)

Figure FDA0002635781390000012

2. Method according to claim 1, wherein said tyre longitudinal force parameter is determined by said processor unit (20) according to a look-up table specific to the type of tyre used.

3. Method according to claim 2, wherein said look-up table is modified by said processor unit (20) depending on information about the inflation pressure and/or the temperature of the tyre (56).

4. Method according to at least one of claims 1 to 3, characterized in that the rolling resistance parameter is determined by the processor unit (20) as a function of the tire longitudinal force parameter determined in the driving force-free or braking force-free driving situation.

5. Method according to at least one of claims 1 to 4, characterized in that the magnitude of the tire acceleration from the acceleration recorder (40) side is characterized by an acceleration acting tangentially or radially in the tire footprint (62).

6. Method according to at least one of claims 1 to 4, characterized in that the variation of the tire rotation speed is analyzed by the processor unit (20) on the basis of the radius variation caused when the tire contact patch (62) associated with the rotation passes and taken into account for characterizing the magnitude of the tire acceleration.

7. Method according to at least one of claims 1 to 6, characterized in that the tire acceleration magnitude is provided wirelessly to the processor unit (20) on the acceleration recorder (40) side.

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