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1. 发明申请

US20110200199A1 METHOD FOR ESTIMATING ROAD SURFACE STATE 有权
标题翻译：估计道路表面状态的方法
公开(公告)号：US20110200199A1
公开(公告)日：2011-08-18
申请号：US13125924
申请日：2009-09-07
申请人： Yasumichi Wakao
发明人： Yasumichi Wakao
IPC分类号： H04R29/00
CPC分类号： B60T8/172 , B60T2210/12 , B60W40/06 , B60W40/068 , B60W2420/54 , G01H17/00
摘要： here is provided a method for determining a road surface state which can accurately estimate the road surface state on which a vehicle is running at one of finely classified road surface states based on a sound detection signal from a ground contact surface sound detection unit for detecting a sound in the vicinity of the ground contact surface of the tire of the running vehicle.The method calculates a wave profile of frequency dispersion by executing a 1/N octave analysis of a detected sound signal from a sound detection unit 20 for estimating a road surface state. The state of the road surface on which the vehicle is running is determined whether the calculated wave profile of frequency dispersion satisfies predetermined determination conditions of the respective road surface states. A microphone housed in a container is used to detect said sound, and the determining step is adapted to apply the determination conditions to the measured wave profile including a resonance caused by the container.
摘要翻译：这里提供了一种用于确定路面状态的方法，该方法可以基于来自地面接触表面声音检测单元的声音检测信号，精确地估计车辆在细分路面状态之一的路面状态，在行驶车辆的轮胎的接地面附近发出声音。该方法通过对来自用于估计路面状态的声音检测单元20的检测到的声音信号执行1 / N倍频程分析来计算频率色散的波形。确定车辆运行的路面的状态是否计算出的频率分布的波形曲线满足各路面状态的预定的确定条件。容纳在容器中的麦克风用于检测所述声音，并且所述确定步骤适于将所述确定条件应用于包括由所述容器引起的共振的测量波形。

2. 发明授权

US09045117B2 Road surface condition estimating method, vehicle control method, and road surface condition estimating apparatus 有权
标题翻译：道路状况估计方法，车辆控制方法以及路面状态估计装置
公开(公告)号：US09045117B2
公开(公告)日：2015-06-02
申请号：US13472150
申请日：2012-05-15
申请人： Yasumichi Wakao
发明人： Yasumichi Wakao
IPC分类号： G01M17/00 , B60T8/172 , B60W40/06 , B60C11/13 , B60W40/064 , B60W40/068 , B60W50/00
CPC分类号： B60T8/172 , B60C11/1369 , B60C2019/004 , B60T2210/12 , B60W40/06 , B60W40/064 , B60W40/068 , B60W2050/0057 , B60W2422/10 , B60W2422/70 , B60W2520/28
摘要： The condition of a road surface on which a vehicle is traveling is estimated accurately, using a tire having a general variable-pitch tire pattern for detection of a road surface condition. The tire for detection of a road surface condition has rows of blocks, the total number N of the circumferentially disposed blocks being 10 or more and the number n of lug grooves, each provided with a joining section connecting circumferentially adjacent blocks, being in the range of (N/2)≦n≦(N−5). The vibrations of the tire are detected by an acceleration sensor and are subjected to a rotational order ratio analysis by a rotational order ratio analyzing unit. And the road surface condition is estimated by comparing the amplitude P of the rotational order component of the tire vibrations extracted by a rotational order component extracting unit with a predetermined threshold value K.
摘要翻译：使用具有用于检测路面状况的通用可变桨距轮胎图案的轮胎，精确地估计车辆行驶的路面的状况。用于检测路面状况的轮胎具有排块，周向设置的块的总数N为10以上，横向槽的数量n分别设置有连接周向相邻的块的接合部，（N / 2）＆nlE; n＆nlE;（N-5）。轮胎的振动由加速度传感器检测，并通过旋转顺序比分析单元进行旋转顺序比分析。并且，通过将由旋转顺序分量提取单元提取的轮胎振动的旋转顺序分量的振幅P与预定阈值K进行比较来估计路面状况。

3. 发明授权

US08869618B2 Method and apparatus for estimating contact patch shape of tire 有权
标题翻译：用于估计轮胎接触片形状的方法和装置
公开(公告)号：US08869618B2
公开(公告)日：2014-10-28
申请号：US13394735
申请日：2010-09-01
申请人： Yasumichi Wakao
发明人： Yasumichi Wakao
IPC分类号： G01M17/02 , B60C23/06 , B60C11/03 , B60T8/172
CPC分类号： B60C23/065 , B60C11/0332 , B60T8/1725 , G01M17/025
摘要： A simple method and apparatus for accurately estimating the contact patch shape of a moving tire. The vibration waveforms of a tire (20) with sipe rows (25A, 25B) formed at the respective pitches (Pa, Pb) in the left and right shoulder lands (24a, 24b) are detected by an acceleration sensor attached to a knuckle of the vehicle. Rotational order spectrums are obtained by performing a rotational order analysis on the vibration waveforms. The peak height (Za) of the rotational order (na) corresponding to the pitch (Pa) and the peak height (Zb) of the rotational order (nb) corresponding to the pitch (Pb) are extracted from the rotational order spectrums. The peak height (Za) is compared with the threshold value (Ka) to estimate whether the contact patch shape of the tire is longer than the contact patch length (La) of the tire contact patch shape (Fa) set as the use limit due to internal pressure drop or load increase, and the peak height (Zb) is compared with the threshold value (Kb) to estimate whether it is shorter than the contact patch length (Lb) of the tire contact patch shape (Fb) set as the use limit due to internal pressure rise or load decrease.
摘要翻译：一种用于精确估计移动轮胎接触片形状的简单方法和装置。形成在左右肩部肩部区段（24a，24b）中的相应间距（Pa，Pb）处的刀槽花纹（25A，25B）的轮胎（20）的振动波形由附接到机动车。通过对振动波形执行旋转顺序分析来获得旋转顺序谱。从旋转顺序谱中提取与间距（Pa）相对应的旋转顺序（na）的峰值高度（Za）和对应于间距（Pb）的旋转顺序（nb）的峰值高度（Zb）。将峰高（Za）与阈值（Ka）进行比较，以估计轮胎的接触片形状是否比设定为使用极限的轮胎接触片形状（Fa）的接触片长度（La）长将内部压降或负载增加，并将峰高（Zb）与阈值（Kb）进行比较，以估计其是否比设定为轮胎接触片形状（Fb）的接触片长度（Lb）短由于内部压力上升或负载下降，使用限制。

4. 发明授权

US08737628B2 Method for estimating road surface state 有权
标题翻译：估计路面状况的方法
公开(公告)号：US08737628B2
公开(公告)日：2014-05-27
申请号：US13125924
申请日：2009-09-07
申请人： Yasumichi Wakao
发明人： Yasumichi Wakao
IPC分类号： H04R25/00
CPC分类号： B60T8/172 , B60T2210/12 , B60W40/06 , B60W40/068 , B60W2420/54 , G01H17/00
摘要： There is provided a method for determining a road surface state which can accurately estimate the road surface state on which a vehicle is running at one of finely classified road surface states based on a sound detection signal from a ground contact surface sound detection unit for detecting a sound in the vicinity of the ground contact surface of the tire of the running vehicle.The method calculates a wave profile of frequency dispersion by executing a 1/N octave analysis of a detected sound signal from a sound detection unit 20 for estimating a road surface state. The state of the road surface on which the vehicle is running is determined whether the calculated wave profile of frequency dispersion satisfies predetermined determination conditions of the respective road surface states. A microphone housed in a container is used to detect said sound, and the determining step is adapted to apply the determination conditions to the measured wave profile including a resonance caused by the container.
摘要翻译：提供了一种用于确定路面状态的方法，该路面状态可以基于来自用于检测车辆的地面接触表面声音检测单元的声音检测信号，精确地估计车辆在精细分类的路面状态之一中行驶的路面状态在行驶车辆的轮胎的接地面附近发出声音。该方法通过对来自用于估计路面状态的声音检测单元20的检测到的声音信号执行1 / N倍频程分析来计算频率色散的波形。确定车辆运行的路面的状态是否计算出的频率分布的波形曲线满足各路面状态的预定的确定条件。容纳在容器中的麦克风用于检测所述声音，并且所述确定步骤适于将所述确定条件应用于包括由所述容器引起的共振的测量波形。

5. 发明申请

US20130116972A1 METHOD FOR ESTIMATING ROAD SURFACE CONDITION 有权
标题翻译：估计道路表面条件的方法
公开(公告)号：US20130116972A1
公开(公告)日：2013-05-09
申请号：US13698228
申请日：2011-01-13
申请人： Yasushi Hanatsuka , Yasumichi Wakao , Hiroshi Morinaga
发明人： Yasushi Hanatsuka , Yasumichi Wakao , Hiroshi Morinaga
IPC分类号： G01B17/08
CPC分类号： G01B17/08 , B60T8/172 , B60T2210/12 , B60T2210/13 , B60W40/06 , B60W40/068
摘要： A method capable of estimating a snowy road surface condition during vehicular travel in finer classification. In this method, tire vibrations in the circumferential direction, road surface temperature (T), and tire-generated sound are detected by an acceleration sensor, a road surface thermometer, and a microphone, respectively. Then band values P11, P12 and P13 for a pre-leading-edge region (R1), band values P21, P22 and P23 for a leading-edge region (R2), band values P31, P32 and P33 for a pre-trailing-edge region (R3), band values P41 and P42 for a trailing-edge region (R4), and band values P51, P52 and P53 for a post-trailing-edge region (R5) are calculated from the tire vibration data. A sound pressure level ratio (Q)=(PA/PB), which is the ratio of a band power value (PA) of a low frequency band to a band power value (PB) of a high frequency band, is calculated from data on the tire-generated sound. And a road surface condition is estimated, using the band values (Pij), road surface temperature data (T), sound pressure level ratio (Q), and wheel speed data.
摘要翻译：一种能够在更精细的分类中估计车辆行驶中的雪路面状况的方法。在该方法中，通过加速度传感器，路面温度计和麦克风分别检测圆周方向的轮胎振动，路面温度（T）和轮胎产生的声音。然后，对于前导区域（R1）的前导区域（R1）的带值P11，P12和P13，前导区域（R2）的频带值P21，P22和P23，用于前导区域的频带值P31，P32和P33，边缘区域（R3），用于后缘区域（R4）的波段值P41和P42以及用于后沿边缘区域（R5）的波段值P51，P52和P53从轮胎振动数据计算。根据数据计算声压级比（Q）=（PA / PB），其是低频带的频带功率值（PA）与高频带的频带功率值（PB）的比率对轮胎产生的声音。并且使用带值（Pij），路面温度数据（T），声压级比（Q）和车轮速度数据来估计路面状况。

6. 发明申请

US20140163770A1 ROAD SURFACE CONDITION ESTIMATING METHOD, AND ROAD SURFACE CONDITION ESTIMATING APPARATUS 有权
标题翻译：道路表面条件估算方法和道路表面条件估算装置
公开(公告)号：US20140163770A1
公开(公告)日：2014-06-12
申请号：US14233223
申请日：2012-07-18
申请人： Yasumichi Wakao
发明人： Yasumichi Wakao
IPC分类号： B60W40/068
CPC分类号： B60W40/068 , B60T8/172 , B60T2210/12 , B60W40/06 , B60W2510/227 , B60W2520/105 , B60W2520/28
摘要： The invention provides a method and apparatus capable of accurately estimating a road surface condition under a traveling vehicle using unsprung acceleration and wheel speed data. The unsprung fore-aft acceleration (Gx) is detected by an acceleration sensor (11) attached to a knuckle (31) which is an unsprung component of a vehicle. At the same time, the wheel speed (Vw) is detected and the variation (ΔVw) in wheel speed is calculated. Then the fluctuation range (σ(ΔVw)) of the variation in wheel speed and the fluctuation range (σ(Gx)) of the unsprung fore-aft acceleration are calculated. And whether the road surface is a rough road surface with some bumpiness or a flat (smooth) road surface is estimated from a relationship between the fluctuation range (σ(ΔVw)) of the variation in wheel speed and the fluctuation range (σ(Gx)) of the unsprung fore-aft acceleration.
摘要翻译：本发明提供一种能够使用非簧下加速度和车轮速度数据精确地估计行驶车辆下的路面状况的方法和装置。簧下的前后加速度（Gx）由附接到作为车辆的簧下分量的转向节（31）的加速度传感器（11）检测。同时，检测车轮速度（Vw），并计算车轮速度的变化（＆Dgr; Vw）。然后计算不规则前后加速度的车轮速度变化和波动范围（＆sgr（（Gx））的波动范围（＆sgr（（＆Dgr; Vw））。并且根据车轮速度变化的波动范围（＆amp; Dgr; Vw）与波动范围的变化范围（＆Dgr; Vw）之间的关系估计路面是否是具有一些凹凸或平坦（平滑）路面的粗糙路面＆sgr;（Gx））簧下的前后加速度。

7. 发明申请

US20100060443A1 APPARATUS FOR ESTIMATING TIRE WEAR AMOUNT AND A VEHICLE ON WHICH THE APPARATUS FOR ESTIMATING TIRE WEAR IS MOUNTED 有权
标题翻译：估计轮胎磨损量的装置和轮胎磨损装置安装的车辆安装
公开(公告)号：US20100060443A1
公开(公告)日：2010-03-11
申请号：US12519067
申请日：2007-11-21
申请人： Yasumichi Wakao , Yasushi Hanatsuka
发明人： Yasumichi Wakao , Yasushi Hanatsuka
IPC分类号： B60C23/00 , G01P21/00 , B60C23/02 , B60C11/24
CPC分类号： B60C11/246 , B60C99/006 , Y10T152/10027
摘要： A vehicle velocity detector 15 is provided, velocity V is detected from position data of the vehicle calculated by using signal from satellites, which is received by a GPS receiver 11 installed to a vehicle body, wheel rotation velocity Vw0 detected by a wheel velocity sensor 12 is corrected in accordance with tire inner pressure detected by a pressure sensor 13 so as to obtain wheel rotation velocity (correction value) Vw, velocity ratio R=(Vw/V), which is ratio of the corrected wheel rotation velocity Vw and the detected wheel velocity V, is calculated and tire wear amount is estimated in accordance with velocity ratio R so that tire wear amount can be measured precisely without processing the tire tread portion.
摘要翻译：提供车速检测器15，通过使用由安装在车身上的GPS接收器11接收到的来自卫星的信号计算出的车辆的位置数据来检测速度V，由车轮速度传感器12检测出的车轮转速Vw0 根据由压力传感器13检测的轮胎内压校正，以获得车轮旋转速度（校正值）Vw，速度比R =（Vw / V），速度比R =（Vw / V），其是校正的车轮旋转速度Vw和检测到的轮转速度Vw 计算轮速V，并根据速度比R估计轮胎磨损量，从而可以在不处理轮胎胎面部的情况下精确地测量轮胎磨损量。

8. 发明授权

US07546764B2 Estimation method and apparatus of tire dynamic state amount and tire with sensors 有权
标题翻译：轮胎动态状态量估算方法及装置及带传感器的轮胎
公开(公告)号：US07546764B2
公开(公告)日：2009-06-16
申请号：US11628299
申请日：2005-06-02
申请人： Hiroshi Morinaga , Yasumichi Wakao , Akira Kobayakawa
发明人： Hiroshi Morinaga , Yasumichi Wakao , Akira Kobayakawa
IPC分类号： E01C23/00
CPC分类号： B60C19/00 , B60C23/0411
摘要： The dynamic state amount of a tire when a load is applied to the tire while running can be estimated accurately and stably by installing tire deformation amount measuring means 11A and 11B at axisymmetrical positions which are equally distant in the axial direction from the center in the axial direction of the tire on the cross-section in the radial direction of the tire on the inner side of the belt portion of a tire tread in the radial direction, such as at the inner surface of the tread, between an inner liner and a ply, between plies or between a ply and a belt to measure the waveforms of deformation of the tire, detecting the contact time which is the time difference between contact edges from the waveforms of deformation, calculating contact length indices kA and kB from the contact time and the wheel speed detected by a wheel speed sensor 15, calculating the average value k of the above indices kA and kB, and obtaining a load applied to the tire by using the calculated average value k of the indices of contact length and a map 18M showing the relationship between the average value of the indices of contact length and load pre-stored in memory means 18.
摘要翻译：通过将轮胎变形量测量装置11A和11B安装在与轴向相等的轴向等距离的轴对称位置处，可以准确稳定地估计轮胎在运行时对轮胎施加负荷时的动态状态量在轮胎胎面的带状部分的内侧沿轮胎径向的横截面上的轮胎方向，例如在胎面的内表面，内衬层和帘布层之间在帘布层之间或帘布层和皮带之间，测量轮胎变形波形，检测接触时间，即接触边缘与变形波形之间的时间差，从接触时间计算接触长度指数kA和kB;以及由车轮速度传感器15检测到的车轮速度，计算上述指标kA和kB的平均值k，并且通过使用计算的平均值v获得施加到轮胎的负载表示接触长度的指标的值k和表示接触长度的指标的平均值与预先存储在存储器装置18中的负载之间的关系的图18M。

9. 发明申请

US20070240502A1 Estimation Method and Apparatus of Tire Dynamic State Amount and Tire with Sensors 有权
标题翻译：轮胎动态状态量和轮胎与传感器的估计方法和装置
公开(公告)号：US20070240502A1
公开(公告)日：2007-10-18
申请号：US11628299
申请日：2005-06-02
申请人： Hiroshi Morinaga , Yasumichi Wakao , Akira Kobayakawa
发明人： Hiroshi Morinaga , Yasumichi Wakao , Akira Kobayakawa
IPC分类号： G01M17/02
CPC分类号： B60C19/00 , B60C23/0411
摘要： The dynamic state amount of a tire when a load is applied to the tire while running can be estimated accurately and stably by installing tire deformation amount measuring means 11A and 11B at axisymmetrical positions which are equally distant in the axial direction from the center in the axial direction of the tire on the cross-section in the radial direction of the tire on the inner side of the belt portion of a tire tread in the radial direction, such as at the inner surface of the tread, between an inner liner and a ply, between plies or between a ply and a belt to measure the waveforms of deformation of the tire, detecting the contact time which is the time difference between contact edges from the waveforms of deformation, calculating contact length indices kA and kB from the contact time and the wheel speed detected by a wheel speed sensor 15, calculating the average value k of the above indices kA and kB, and obtaining a load applied to the tire by using the calculated average value k of the indices of contact length and a map 18M showing the relationship between the average value of the indices of contact length and load pre-stored in memory means 18.
摘要翻译：通过将轮胎变形量测量装置11A和11B安装在轴向相对于中心的轴对称位置处，可以准确稳定地估计轮胎在运行时对轮胎施加负荷时的轮胎的动态状态量在轮胎胎面的径向内侧的轮胎的径向的横截面上的轮胎的轴向方向，例如在胎面的内表面，内胎与内胎之间，测量轮胎变形波形的层之间，帘布层之间或帘布层和皮带之间的层，检测接触边缘之间的时间差是接触边缘与变形波形之间的接触时间，计算接触长度指数k < / SUB＆gt;和k B＆lt; B＆gt;从接收时间和由车轮速度传感器15检测到的车轮速度，计算上述索引k A A和K 2的平均值k， SUB> B ，并获得负载应用通过使用计算出的接触长度指数的平均值k和表示接触长度的指标的平均值和预先存储在存储装置18中的负载之间的关系的映射图18M来轮胎。

10. 发明授权

US08493200B2 Apparatus for estimating tire wear amount and a vehicle on which the apparatus for estimating tire wear is mounted 有权
标题翻译：用于估计轮胎磨损量的装置和安装有用于估计轮胎磨损的装置的车辆
公开(公告)号：US08493200B2
公开(公告)日：2013-07-23
申请号：US12519067
申请日：2007-11-21
申请人： Yasumichi Wakao , Yasushi Hanatsuka
发明人： Yasumichi Wakao , Yasushi Hanatsuka
IPC分类号： B60C23/00
CPC分类号： B60C11/246 , B60C99/006 , Y10T152/10027
摘要： A vehicle velocity detector 15 is provided, velocity V is detected from position data of the vehicle calculated by using signal from satellites, which is received by a GPS receiver 11 installed to a vehicle body, wheel rotation velocity Vw0 detected by a wheel velocity sensor 12 is corrected in accordance with tire inner pressure detected by a pressure sensor 13 so as to obtain wheel rotation velocity (correction value) Vw, velocity ratio R=(Vw/V), which is ratio of the corrected wheel rotation velocity Vw and the detected wheel velocity V, is calculated and tire wear amount is estimated in accordance with velocity ratio R so that tire wear amount can be measured precisely without processing the tire tread portion.
摘要翻译：提供车速检测器15，通过使用由安装在车身上的GPS接收器11接收到的来自卫星的信号计算出的车辆的位置数据来检测速度V，由车轮速度传感器12检测出的车轮转速Vw0 根据由压力传感器13检测的轮胎内压校正，以获得车轮旋转速度（校正值）Vw，速度比R =（Vw / V），速度比R =（Vw / V），其是校正的车轮旋转速度Vw和检测到的轮转速度Vw 计算轮速V，并根据速度比R估计轮胎磨损量，从而可以在不处理轮胎胎面部的情况下精确地测量轮胎磨损量。

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