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    Load estimation system and method for a vehicle tire
    61.
    发明公开
    Load estimation system and method for a vehicle tire 审中-公开
    Lastschätzungssystemund Verfahrenfüreinen Fahrzeugreifen

    公开(公告)号：EP2679411A2

    公开(公告)日：2014-01-01

    申请号：EP13173699.3

    申请日：2013-06-26

    申请人： The Goodyear Tire & Rubber Company

    发明人： Patel, Amrita ,  Fenkanyn, John Michael ,  Singh, Kanwar Bharat ,  Suh, Peter Jung-min

    IPC分类号： B60C23/02 ,  B60C23/06

    CPC分类号： B60C23/04 ,  B60C23/064

    摘要： A method of estimating a load bearing on a vehicle tire (12) is disclosed. The method comprises: deploying a deformation measuring sensor (16) in the tire (12), the deformation measuring sensor (16) generating a cyclical tire deformation signal indicative of tire deformation in a contact patch of a rolling tire; deploying a tire inflation pressure measuring sensor (22) in the tire (12), the inflation pressure measuring sensor measuring tire inflation pressure from within a tire cavity, and calculating a tire rolling speed estimation based upon the tire deformation signal; calculating a tire contact patch length estimation based upon the tire deformation signal; and calculating a load estimation on the tire (12) based upon the tire inflation pressure, the tire contact patch length estimation, and the tire rolling speed estimation. Also, a system of estimating a load bearing on a vehicle tire is disclosed. The system comprises a vehicle tire (12) supporting a load; an inflation pressure measuring sensor (22); and a deformation measuring sensor (16). The deformation measuring sensor (16) comprises a piezoelectric sensor. Furthermore, the system comprises a programmed data processor for calculating a contact patch length estimation from the deformation signal; a programmed data processor for calculating a tire rolling speed estimation from the deformation signal; and an artificial neural network programmed to adaptively interpret the tire rolling speed estimation, the contact patch length estimation, and the measured inflation pressure of the tire and generate an output load estimation based thereon.

    摘要翻译： 公开了一种估计车辆轮胎（12）上的承重的方法。 该方法包括：在轮胎（12）中部署变形测量传感器（16），变形测量传感器（16）产生指示滚动轮胎接触片中的轮胎变形的循环轮胎变形信号; 在轮胎（12）内部配置轮胎充气压力测量传感器（22），所述充气压力测量传感器从轮胎腔内测量轮胎充气压力，并且基于所述轮胎变形信号计算轮胎滚动速度估计; 基于轮胎变形信号计算轮胎接触片长度估计; 以及基于轮胎充气压力，轮胎接触片长度估计和轮胎滚动速度估计来计算轮胎（12）上的载荷估计。 另外，公开了一种估计车辆轮胎上的承重的系统。 该系统包括支撑负载的车辆轮胎（12） 充气压力测量传感器（22）; 和变形测量传感器（16）。 变形测量传感器（16）包括压电传感器。 此外，该系统包括用于根据变形信号计算接触片长度估计的编程数据处理器; 编程数据处理器，用于根据变形信号计算轮胎滚动速度估计; 以及被编程为自适应地解释轮胎滚动速度估计，接触片长度估计和所测量的轮胎充气压力的人造神经网络，并基于此产生输出负载估计。

    Method, apparatus, and program for detecting tire having decreased air pressure
    63.
    发明公开
    Method, apparatus, and program for detecting tire having decreased air pressure 有权
    用于检测具有降低的空气压力的轮胎的方法，设备和程序

    公开(公告)号：EP2583843A3

    公开(公告)日：2013-09-25

    申请号：EP12172678.0

    申请日：2012-06-20

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： Yanase, Minao

    IPC分类号： B60C23/06

    CPC分类号： B60C23/061

    摘要： A method for detecting a tire having a decreased air pressure based on wheel rotation information to be obtained from the tire attached to a vehicle in which there is a predetermined difference between a front wheel load and a rear wheel load. The method includes a step of acquiring the wheel rotation information to be obtained from the tire, a step of storing the wheel rotation information, a step of acquiring a load sensitivity of a tire dynamic loaded radius due to a load shift during a turning, a step of acquiring a speed dependency of the load sensitivity, a step of comparing a load sensitivity of a tire dynamic loaded radius at a speed acquired based on the speed dependency with preliminarily stored load sensitivities of dynamic loaded radiuses of various tires, a step of estimating a decreased pressure sensitivity of the tire dynamic loaded radius based on a result of the comparison, and a step of determining that the tire has a decreased air pressure based on a result of the estimation. The speed dependency is acquired from a change of a front and rear wheel speed ratio.

    摘要翻译： 一种用于基于从安装到车辆的轮胎获得的车轮旋转信息来检测具有降低的空气压力的轮胎的方法，在所述车辆中，在前轮负载和后轮负载之间存在预定差异。 该方法包括获取从轮胎获得的车轮旋转信息的步骤，存储车轮旋转信息的步骤，获取由于转弯期间的载荷偏移导致的轮胎动态负载半径的负载灵敏度的步骤， 获取负载灵敏度的速度依赖性的步骤;比较基于速度依赖性获取的速度下的轮胎动态负载半径的负载灵敏度与各种轮胎的动态负载半径的预先存储的负载灵敏度的步骤; 基于比较结果降低轮胎动态负载半径的压力敏感度，以及基于估计结果确定轮胎具有降低的空气压力的步骤。 速度依赖性是从前后轮速度比的变化中获得的。

    System, method, and program for detecting deflated tires
    64.
    发明公开
    System, method, and program for detecting deflated tires 有权
    系统，方法和程序，用于检测轮胎漏气

    公开(公告)号：EP2529958A3

    公开(公告)日：2013-09-25

    申请号：EP12169472.3

    申请日：2012-05-25

    申请人： SUMITOMO RUBBER INDUSTRIES LIMITED ,  HONDA MOTOR CO., LTD.

    发明人： Yanase, Minao ,  Sakagami, Seigou ,  Oshiro, Yuji ,  Sakai, Tomonori ,  Notomi, Shinya ,  Saito, Kazutaka ,  Okada, Kazunari ,  Ueno, Ichiro

    IPC分类号： B60C23/06

    CPC分类号： B60C23/061

    摘要： A system for detecting deflated tires by making a relative comparison among rotation speeds of tires attached to a vehicle. The system includes a rotation speed information detection means for detecting rotation speed information of the tires; a rotation speed calculation means for calculating rotation speeds of the tires; and a determination means for determining deflated tires by comparing a decreased pressure determination value using the calculated rotation speeds with a predetermined threshold value. The determination means determines that the vehicle is going straight when it is found, with regard to factors composed of a lateral G, a yaw rate, and a steering angle of the vehicle, at least two of the factors including the yaw rate show that a difference between the maximum value and the minimum value at a predetermined time is lower than a predetermined value, thereby detecting deflated tires.

    System, method and program for detecting deflated tires
    65.
    发明公开
    System, method and program for detecting deflated tires 有权

    公开(公告)号：EP2529957A3

    公开(公告)日：2013-09-25

    申请号：EP12169277.6

    申请日：2012-05-24

    申请人： SUMITOMO RUBBER INDUSTRIES LIMITED ,  HONDA MOTOR CO., LTD.

    发明人： Oshiro, Yuji ,  Sakagami, Seigou ,  Kitano, Masashi ,  Kawasaki, Hiroaki ,  Sakai, Tomonori ,  Notomi, Shinya ,  Okada, Kazunari

    IPC分类号： B60C23/06

    CPC分类号： B60C23/062 ,  B60C23/061

    摘要： An system for detection of deflated tires based on a resonance frequency of tires with a vehicle and a relative comparison value of rotation speeds of the tires. The system includes: a rotation information detection means for detecting rotation information of the tires; a rotation speed calculation means for calculating rotation speeds of the tires; a resonance frequency assumption means for assuming a resonance frequency of the tires; and a determination means for detection of deflated tires using a decreased pressure determination index calculated by a relative comparison of the rotation speeds of the tires and the resonance frequency. The determination means is so configured, assuming that the first determination index at which warning is issued when the resonance frequency exceeds the first threshold a predetermined number of times is 100 in detecting deflated tires based on the resonance frequency and when the first determination value has a converted percentage equal to or higher than 10 and lower than 100, as to reduce the second threshold to be compared with the decreased pressure determination index to a value equal to or higher than 1% and equal to or lower than 90% and to detect deflated tires when the decreased pressure determination index exceeds the reduced threshold.