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    • 3. 发明授权
    • Method for determining the profile depth of a tire and/or a tire characteristic, and a tire
    • 用于确定轮胎的轮廓深度和/或轮胎特性的方法以及轮胎
    • US08240198B2
    • 2012-08-14
    • US12670745
    • 2008-07-23
    • Kai SchadeAndreas HeiseStefan Kammann
    • Kai SchadeAndreas HeiseStefan Kammann
    • G01M17/02
    • G01B7/26B60C2019/005Y10T152/10027
    • A method used for determining a profile depth or wear on a tread of a tire of a vehicle, and/or a tire characteristic, a magnetic field being detected by a magnetic field sensor disposed in the interior of the tire, particularly in the area of the tread on the tire interior, or at a distance from the tire, particularly in the area of a wheel housing or a wheel well of the vehicle, the magnetic field being transmitted or changed by at least one indicator element disposed in the tread on the tire exterior. The current wear state of the tread and/or the tire characteristic, particularly a tire type and/or permissible top speed, is determined based on output signals of the magnetic field sensor. The invention further relates to tires.
    • 一种用于确定车辆轮胎的胎面上的轮廓深度或磨损的方法和/或轮胎特性,由设置在轮胎内部的磁场传感器检测的磁场,特别是在 轮胎内部的胎面,或与轮胎相距一定距离,特别是在车辆车轮或车轮的车轮区域的区域中,磁场被设置在胎面上的至少一个指示元件传递或改变 轮胎外观。 基于磁场传感器的输出信号确定胎面和/或轮胎特性的当前磨损状态,特别是轮胎类型和/或允许的最高速度。 本发明还涉及轮胎。
    • 9. 发明申请
    • METHOD AND DEVICE FOR DETERMINING A MAXIMUM COEFFICIENT OF FRICTION BETWEEN A TIRE AND AN UNDERLYING SURFACE
    • 用于确定轮胎和下一个表面之间的摩擦系数的最大系数的方法和装置
    • US20110166761A1
    • 2011-07-07
    • US12986725
    • 2011-01-07
    • Stefan KammannLothar Keller
    • Stefan KammannLothar Keller
    • G06F19/00G01N19/02
    • G01N19/02G01M17/02
    • A method for determining a maximum coefficient of friction μmax between a tire and an underlying surface entails empirically determining a reference curve μref(S) of a coefficient of friction μref as a function of a slip S between the tire and an underlying reference surface, determining a first momentary slip S1 for the tire and a first momentary coefficient of friction μ1 between the tire and the underlying surface at a first instant t1, determining a second momentary slip S2 for the tire and a second momentary coefficient of friction μ2 between the tire and the underlying surface at a second instant t2, computing a slope of the curve μ(S) of the coefficient of friction μ as a function of slip S, and computing the maximum coefficient of friction μmax between the tire and the underlying surface by transforming the reference curve μref(S) on the basis of the slope of the curve μ(S). With the aid of the vehicle devices present in any event in modern motor vehicles it is possible to use the information provided by the vehicle devices to be able to compute the momentary slip S and the momentary coefficient of friction μ. By comparing the momentary curve μ(S) that can be determined from the measuring points (μ1; S1) and (μ2; S2) with the empirically determined reference curve μref(S) it is possible using a suitable mathematical method to very accurately estimate, in particular interpolate, the maximum coefficient of friction μmax for the momentary material pairing of the tire with the underlying surface.
    • 用于确定轮胎和下面的表面之间的最大摩擦系数μmax的方法必须经验地确定摩擦系数μref的参考曲线μref(S)作为轮胎和下面的参考表面之间的滑差S的函数,确定 轮胎的第一瞬时滑动S1和在第一时刻t1的轮胎和下面的表面之间的第一瞬时摩擦系数μ1,确定轮胎的第二瞬时滑移S2和轮胎和轮胎之间的第二瞬时摩擦系数μ2 在第二时刻t2的下面的表面,计算作为滑移S的函数的摩擦系数μ的曲线μ(S)的斜率,并且通过将轮胎和下面的表面之间的最大摩擦系数μmax 基于曲线μ(S)的斜率的参考曲线μref(S)。 借助于现代汽车中存在的车辆装置,可以使用由车辆装置提供的信息来计算瞬时滑移S和瞬时摩擦系数μ。 通过比较经验确定的参考曲线μref(S)可从测量点(μ1; S1)和(μ2; S2)确定的瞬时曲线μ(S),可以使用合适的数学方法非常准确地估计 ,特别是内插,轮胎与下面的表面的瞬时材料配对的最大摩擦系数μmax。
    • 10. 发明授权
    • Method and device for determining a maximum coefficient of friction between a tire and an underlying surface
    • 用于确定轮胎和下面的表面之间的最大摩擦系数的方法和装置
    • US08645038B2
    • 2014-02-04
    • US12986725
    • 2011-01-07
    • Stefan KammannLothar Keller
    • Stefan KammannLothar Keller
    • G06F7/70G06F19/00G06G7/00G06G7/76
    • G01N19/02G01M17/02
    • A method for determining a maximum coefficient of friction μmax between a tire and an underlying surface entails empirically determining a reference curve μref(S) of a coefficient of friction μref as a function of a slip S between the tire and an underlying reference surface, determining a first momentary slip S1 for the tire and a first momentary coefficient of friction μ1 between the tire and the underlying surface at a first instant t1, determining a second momentary slip S2 for the tire and a second momentary coefficient of friction μ2 between the tire and the underlying surface at a second instant t2, computing a slope of the curve μ(S) of the coefficient of friction μ as a function of slip S, and computing the maximum coefficient of friction μmax between the tire and the underlying surface by transforming the reference curve μref(S) on the basis of the slope of the curve μ(S).
    • 用于确定轮胎和下面的表面之间的摩擦最大摩擦系数的方法必须经验地确定摩擦系数muref的参考曲线muref(S)作为轮胎和下面的参考表面之间的滑差S的函数,确定 轮胎的第一瞬时滑动S1和在第一时刻t1的轮胎和下面的表面之间的第一瞬时摩擦系数μ1,确定轮胎的第二瞬时滑移S2和轮胎和轮胎之间的第二瞬时摩擦系数μ2 在第二时刻t2的下面的表面,计算作为滑移S的函数的摩擦系数μ的曲线μ(S)的斜率,并且通过将轮胎和下面的表面之间的摩擦mumax的最大摩擦系数 基于曲线mu(S)的斜率的参考曲线muref(S)。