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    Road surface state estimating apparatus, road surface friction state estimating apparatus, road surface state physical quantity calculating apparatus, and road surface state announcing apparatus
    1.
    发明授权
    Road surface state estimating apparatus, road surface friction state estimating apparatus, road surface state physical quantity calculating apparatus, and road surface state announcing apparatus 失效
    路面状态估计装置，路面摩擦状态估计装置，路面状态物理量计算装置以及路面状态通知装置

    公开(公告)号：US07248958B2

    公开(公告)日：2007-07-24

    申请号：US10702492

    申请日：2003-11-07

    申请人： Yoshitoshi Watanabe ,  Katsuhiro Asano ,  Takaji Umeno ,  Shu Asami ,  Masaru Sugai

    发明人： Yoshitoshi Watanabe ,  Katsuhiro Asano ,  Takaji Umeno ,  Shu Asami ,  Masaru Sugai

    IPC分类号： G06F19/00

    CPC分类号： B60T8/1725 ,  B60T2210/12 ,  B60W40/068 ,  B60W2420/54

    摘要： A tire-generated sound detection sensor detects a tire-generated sound that is generated from a tire while the vehicle is running. A wheel rotation sensor detects a wheel rotation speed. A preprocessor calculates feature quantities corresponding to a road surface state and tire-generated sound sources. A feature vector generator generates a feature vector having, as components, the feature quantities calculated by the preprocessor and the detected wheel rotation speed. A judgment processor estimates a state of a road surface on which the vehicle is running on the basis of the feature vector generated by the feature vector generator and feature vectors that are stored in a judgment map memory so as to be correlated with a plurality of road surface states, respectively, and each of which corresponds to a road surface state and tire-generated sound sources.

    摘要翻译： 轮胎产生的声音检测传感器检测在车辆行驶时从轮胎产生的轮胎产生的声音。 车轮旋转传感器检测车轮转速。 预处理器计算对应于路面状态和轮胎产生的声源的特征量。 特征向量生成器生成特征向量，该特征向量具有由预处理器计算的特征量和检测到的轮转速的组件。 判断处理器基于由特征矢量生成器生成的特征向量和存储在判断图存储器中的特征向量来估计车辆行驶的路面的状态，以便与多个道路相关联 表面状态，并且其中的每一个对应于路面状态和轮胎产生的声源。

    Force detecting apparatus
    2.
    发明授权
    Force detecting apparatus 失效
    力检测装置

    公开(公告)号：US07010990B2

    公开(公告)日：2006-03-14

    申请号：US10757465

    申请日：2004-01-15

    申请人： Takaji Umeno ,  Katsuhiro Asano ,  Yoshitoshi Watanabe ,  Masaru Sugai ,  Shu Asami

    发明人： Takaji Umeno ,  Katsuhiro Asano ,  Yoshitoshi Watanabe ,  Masaru Sugai ,  Shu Asami

    IPC分类号： G01L3/02

    CPC分类号： G01M17/02 ,  G01L5/164 ,  G01N19/02

    摘要： In a detecting apparatus, a resolver generates signals whose magnitudes vary periodically in accordance with a positional change of a fixed element side rotating shaft, which is a base for rotation of a rotator and whose position is offset when force of a component parallel to a rotation plane is applied thereto, and in accordance with a rotational state of the tire. An R/D converter generates pulses whose periods correspond to a rotational angle of the rotator and to positional offset of the rotating shaft. From the pulses, a computer detects a characteristic amount which varies in accordance with the positional offset of the shaft. On the basis of the detected amount and a relationship which is determined in advance on the basis of stiffness of the shaft and the amount, the computer detects a moment applied to the shaft, and computes a force generated at the tire.

    摘要翻译： 在检测装置中，旋转变压器根据作为旋转体的旋转基准的固定元件侧旋转轴的位置变化而周期性地变化其大小的信号，并且当平行于旋转的分量的力时位置偏移 并且根据轮胎的旋转状态施加平面。 R / D转换器产生其周期对应于旋转体的旋转角度和旋转轴的位置偏移的脉冲。 根据脉冲，计算机检测根据轴的位置偏移而变化的特征量。 基于检测量和基于轴的刚度和量的预先确定的关系，计算机检测施加到轴的力矩，并计算在轮胎处产生的力。

    Tire parameter estimation device and road surface judgment device
    9.
    发明授权
    Tire parameter estimation device and road surface judgment device 失效
    轮胎参数估计装置和路面判断装置

    公开(公告)号：US06704636B2

    公开(公告)日：2004-03-09

    申请号：US09824108

    申请日：2001-04-03

    申请人： Yasushi Amano ,  Masanori Miyashita ,  Yoshitoshi Watanabe ,  Akira Tanaka ,  Yoshiyuki Yasui ,  Mamoru Sawada

    发明人： Yasushi Amano ,  Masanori Miyashita ,  Yoshitoshi Watanabe ,  Akira Tanaka ,  Yoshiyuki Yasui ,  Mamoru Sawada

    IPC分类号： G06F1700

    CPC分类号： B60C11/246 ,  B60T8/172 ,  B60T13/662 ,  B60T2210/12 ,  G01K7/42

    摘要： A tire parameter estimation device that is economical and can accurately estimate tire parameters while taking into consideration both states of a vehicle and states of a road environment. A &mgr; gradient detecting circuit detects a &mgr; gradient on the basis of a wheel speed detected by a wheel speed detecting circuit. A gradient value comparing circuit determines a &mgr; gradient section value &mgr;r, which is a mean value of the &mgr; gradients from the &mgr; gradient detecting circuit, and calculates a rate (=&mgr;r/&mgr;I) of the &mgr; gradient mean value &mgr;r with respect to a &mgr; gradient initial value &mgr;. A tire temperature estimating circuit stores a table representing the relation between the rate and a tire temperature, and estimates a tire temperature corresponding to the rate calculated by the gradient value comparing circuit as the present tire temperature.

    摘要翻译： 一种轮胎参数估计装置，其考虑到车辆的状态和道路环境的状态，其经济性并且可以准确地估计轮胎参数。 μ梯度检测电路基于由车轮速度检测电路检测到的车轮速度来检测μ梯度。 梯度值比较电路确定作为μ梯度检测电路的mu梯度的平均值的μ梯度区间值mur，并计算μ梯度平均值mur相对于a的梯度区间值（= mur / muI） mu梯度初始值mu。 轮胎温度估计电路存储表示速率与轮胎温度之间的关系的表，并且将与由梯度值比较电路计算出的速率相对应的轮胎温度估计为当前轮胎温度。