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    • 1. 发明授权
    • Profiled vehicle tire and method for dimensioning the optimum phase
offset between adjacent tread portions
    • 异形车轮胎和相邻胎面部分之间的最佳相位偏移尺寸的方法
    • US5746848A
    • 1998-05-05
    • US313891
    • 1994-09-27
    • Thomas SchulzeGeert RoikMichael HahnKlaus Kleinhoff
    • Thomas SchulzeGeert RoikMichael HahnKlaus Kleinhoff
    • B60C11/00B60C113/00
    • B60C11/0318Y10T156/1023
    • A vehicle tire having a profiled tread on the periphery of which are arranged pitches of at least two different lengths. In an axial direction, the tread is divided into several parts, with the successive pitch length in a given axial part forming a pitch sequence. To further reduce radial force fluctuations that induce vibrations by the transmission of noise into wheel suspension and body parts, the phase offset between the pitch sequences of the various tread parts is dimensioned such that the distance between the absolute extremes of the summation of weighted representations of a given function is minimal or at most 25% greater than this minimum. Each of the tread parts have associated therewith a function that is the successive plotting of successive pitch lengths of the pertaining tread part on the abscissa while marking off the respective pitch length, starting from the abscissa, onto the ordinate. From each of these functions a "representation" is determined that is what remains after elimination of all harmonic parts of greater than the x order, with "x" being an integer between 8 and 14. To determine this remainder, the function is first harmonically analyzed from the first to the x order, and from this information, including the phase information, the representation is generated by synthesis.
    • 具有轮廓胎面的车辆轮胎在其外围设置有至少两个不同长度的间距。 在轴向方向上,胎面被分成几个部分,在给定的轴向部分中连续的节距长度形成俯仰序列。 为了进一步减少通过将噪声传播到车轮悬架和车身部分而引起振动的径向力波动,各种胎面部分的俯仰序列之间的相位偏移被设定为使得加权表示的求和的绝对极限之间的距离 给定的功能是最小的或最多25%比这个最小值。 胎面部分中的每一个都具有相关联的功能,该功能是在横坐标上相继绘制相关胎面部分的相继节距,同时从横坐标开始将相应的节距长度标记到纵坐标上。 从这些功能的每一个中,确定“表示”是消除大于x阶的所有谐波部分之后仍然存在的,“x”是8到14之间的整数。为了确定该余数,该函数是第一谐波 从第一个到第x个阶段分析,并且从该信息,包括相位信息,通过综合生成表示。
    • 2. 发明授权
    • Device for reducing tire/road surface noise
    • 减少轮胎/路面噪音的装置
    • US5598479A
    • 1997-01-28
    • US381411
    • 1995-01-30
    • Thomas DodtFrank GauterinThomas SchulzeGeert RoikHeinrich Huinink
    • Thomas DodtFrank GauterinThomas SchulzeGeert RoikHeinrich Huinink
    • B60C19/00G10K11/178G10K11/16
    • G10K11/172B60C19/002G10K2210/101G10K2210/121G10K2210/12821G10K2210/3212G10K2210/32272
    • A device for reducing certain sound ranges of tire/road surface noise of a motor vehicle includes sound absorbers in the form of resonators positioned at the inner wall of a wheel well of the vehicle in the area of sound projection of the tire/road surface noise. The device has an electronic control device for receiving a signal preferably derived from an ABS system in the form of the wheel rpm. The control device adjusts the resonators according to the number of tread blocks of the tire, the sound emission characteristics, and the wheel rpm. In another embodiment the electronic control device is supplied with signals received from a sound receiver that records the course over time of the sound pressure. The control device adjusts the resonators such that the measured sound pressure signal is minimized. In another alternative the device has a data processing unit including an electronic control device. The control device is supplied with a signal from sound receiving devices that record the course over time of the sound pressure. The data processing unit together with an adjusting device adjusts the resonators such that the measured sound pressure signal for selected frequency ranges is minimized.
    • 用于减少机动车辆的轮胎/路面噪声的某些声音范围的装置包括在轮胎/路面噪声的声音投影区域中设置在车辆的车轮井的内壁处的谐振器形式的吸声器 。 该装置具有电子控制装置,用于接收以轮转速度形式优选地从ABS系统导出的信号。 控制装置根据轮胎胎面花纹块的数量,声音发射特性和车轮转速来调节谐振器。 在另一个实施例中,电子控制装置被提供有从声音接收器接收的信号,该声音接收器记录声压随时间的过程。 控制装置调节谐振器使测得的声压信号最小化。 在另一替代方案中,该装置具有包括电子控制装置的数据处理单元。 控制装置被提供有来自声音接收装置的信号,其记录声压随时间的过程。 数据处理单元与调节装置一起调节谐振器,使得所选频率范围的测量声压信号最小化。