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    • 137. 发明申请
    • METHOD FOR DETERMINING A WHEEL TIRE GROUND PRINT
    • 确定轮胎地面打印的方法
    • US20160303928A1
    • 2016-10-20
    • US15101086
    • 2014-11-24
    • CONTINENTAL AUTOMOTIVE FRANCECONTINENTAL AUTOMOTIVE GMBH
    • Rachid BENBOUHOUTJean-Christophe BOUTHINON
    • B60C23/04G01B21/02
    • B60C23/0488B60C23/0408B60C23/0447B60C23/0474B60C23/064B60C2019/004G01B21/02
    • Method of determining the footprint of a tire on the ground, using devices already installed in standard production tires. Since the frequency of the transmitter clock present in a wheel unit is perturbed by mechanical vibrations when the tire contacts the ground, the frequency variations of the reference clock are representative of the value of the footprint. The method therefore includes determining the footprint on the ground of a tire of a wheel by measuring continuously, as a function of time, a signal representative of the variations in frequency of the reference clock supplied at the output of the time control device; determining a time interval during which the frequency variations of the reference clock occur; and, on the basis of the rotation speed of the tire, deducing therefrom an angular range of contact (Θ) corresponding to the footprint between the ends representing the ground contact length of the tire.
    • 使用已经安装在标准生产轮胎中的设备来确定轮胎在地面上的占地面积的方法。 由于当轮胎接触地面时,车轮单元中出现的发射机时钟的频率受到机械振动的干扰,所以参考时钟的频率变化代表了占用空间的值。 因此,该方法包括根据时间连续地测量表示在时间控制装置的输出处提供的参考时钟的频率变化的信号来确定车轮轮胎的基准面积; 确定参考时钟的频率变化发生的时间间隔; 并且基于轮胎的转速,从其中推导出与表示轮胎的接地接触长度的端部之间的占地面积相对应的接触角度(θ)。
    • 138. 发明授权
    • System and method for determining tire uniformity parameters from piezoelectric measurements in the tire counter-deflection zone
    • 用于通过轮胎反向偏转区域中的压电测量确定轮胎均匀性参数的系统和方法
    • US09429497B2
    • 2016-08-30
    • US14304133
    • 2011-12-29
    • David Alan Weston
    • David Alan Weston
    • G01M17/02G01L5/16B60C23/04B60C23/06
    • G01M17/02B60C23/0493B60C23/064B60C2019/004G01L5/167
    • Systems and methods of determining tire uniformity parameters from piezoelectric tire sensor output signals obtained while operating in the counter-deflection zone include establishing a transfer function that relates a tire uniformity parameter to the piezoelectric output signals. Piezoelectric output signals from two or more piezoelectric tire sensors are then monitored to measure the voltage change from each piezoelectric tire sensor while it is operating in the counter-deflection zone. These output signals are correlated, and an actual tire uniformity parameter value is determined by applying the measured and correlated piezoelectric output signal voltage change levels to the established transfer function. Actual tire uniformity values are ultimately provided as electronic output to a user.
    • 通过在反向偏转区域中操作时获得的压电轮胎传感器输出信号来确定轮胎均匀性参数的系统和方法包括建立将轮胎均匀性参数与压电输出信号相关联的传递函数。 然后监测来自两个或更多个压电轮胎传感器的压电输出信号,以在每个压电轮胎传感器在反偏转区域中操作时测量电压变化。 这些输出信号相关,并且通过将测量和相关的压电输出信号电压变化电平应用于建立的传递函数来确定实际的轮胎均匀性参数值。 实际的轮胎均匀性值最终被提供给用户的电子输出。