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    METHOD AND DEVICE FOR DETERMINING STATE OF ROAD SURFACE
    4.
    发明公开
    METHOD AND DEVICE FOR DETERMINING STATE OF ROAD SURFACE 审中-公开
    VERFAHREN UND VORRICHTUNG ZUM BESTIMMEN DES ZUSTANDS EINERSTRASSENOBERFLÄCHE

    公开(公告)号：EP2883772A1

    公开(公告)日：2015-06-17

    申请号：EP13828701.6

    申请日：2013-08-09

    申请人： Bridgestone Corporation ,  Inter-University Research Institute Corporation Research Organization of Information and Systems

    发明人： HANATSUKA Yasushi ,  HIGUCHI Tomoyuki ,  MATSUI Tomoko

    IPC分类号： B60W40/068 ,  G01W1/00 ,  B60C19/00

    CPC分类号： B60W40/068 ,  B60C99/00 ,  B60C2200/04 ,  B60W2530/20

    摘要： A time-series waveform of tire vibration detected by an acceleration sensor is windowed by a windowing means, time-series waveforms of the tire vibration are extracted for respective time windows, and feature vectors of the respective time windows are calculated. Then kernel functions are calculated from the feature vectors of the respective time windows and road surface feature vectors, which are the feature vectors for the respective time windows calculated from the time-series waveform of the tire vibration obtained for distinctive road surface conditions calculated in advance. And the road surface condition is determined by comparing values of discriminant functions using the kernel functions. As a result, the road surface condition can be determined from the time-series waveform of the tire vibration without detecting peak positions or measuring the wheel speed. Moreover, robustness against changes in tire size can be added to the determination of the road surface condition.

    摘要翻译： 通过加窗装置对由加速度传感器检测出的轮胎振动的时间序列波形进行加窗，对各时间窗提取轮胎振动的时间序列波形，并计算各时间窗口的特征向量。 然后根据各个时间窗口的特征向量和路面特征向量计算核函数，路面特征向量是从针对预先计算的区别路面条件获得的轮胎振动的时间序列波形计算出的各个时间窗口的特征向量 。 路面条件是通过使用核函数比较判别函数的值来确定的。 结果，可以根据轮胎振动的时间序列波形来确定路面状况，而不检测峰值位置或测量车轮速度。 此外，可以增加对轮胎尺寸变化的鲁棒性，以确定路面状况。

    SYSTEM OPTIMIZATION CONTROL DEVICE, SYSTEM OPTIMIZATION CONTROL METHOD, AND PROGRAM
    7.
    发明公开
    SYSTEM OPTIMIZATION CONTROL DEVICE, SYSTEM OPTIMIZATION CONTROL METHOD, AND PROGRAM 审中-公开

    公开(公告)号：EP4177799A1

    公开(公告)日：2023-05-10

    申请号：EP21832280.8

    申请日：2021-07-02

    申请人： Inter-University Research Institute Corporation Research Organization of Information and Systems

    发明人： PHALAKARN, Kittiphon ,  TAKISAKA, Toru ,  HAAS, Thomas ,  HASUO, Ichiro

    IPC分类号： G06N7/00 ,  G06F17/18

    摘要： A system optimal control technique with accuracy guarantee that enables high-speed calculations is provided. One aspect of the present invention is related to a system optimal control device including a graph converting unit configured to convert, based on an upper bound of an probability of arrival from an initial state to a final state of a stochastic game representing system information, the stochastic game into a flow analysis graph, a path selecting unit configured to select a path having a maximum width among paths from each state node to a final state node in the converted flow analysis graph, a width of each of the paths being defined as a minimum weight of edges forming the path, and a convergence determining unit configured to determine convergence of the upper bound and a lower bound of the probability of arrival of the stochastic game based on information about the selected path.

    VELOCITY/DISTANCE DETECTION SYSTEM, VELOCITY/DISTANCE DETECTION APPARATUS, AND VELOCITY/DISTANCE DETECTION METHOD
    10.
    发明公开
    VELOCITY/DISTANCE DETECTION SYSTEM, VELOCITY/DISTANCE DETECTION APPARATUS, AND VELOCITY/DISTANCE DETECTION METHOD 有权
    速度/距离检测系统，速度/距离检测装置和速度/距离检测方法

    公开(公告)号：EP2525238A1

    公开(公告)日：2012-11-21

    申请号：EP11732958.1

    申请日：2011-01-14

    申请人： Inter-University Research Institute Corporation Research Organization of Information and Systems

    发明人： HASHIZUME, Hiromichi ,  SUGIMOTO, Masanori ,  SATO, Tomohiko

    IPC分类号： G01S11/14 ,  G01P5/00

    CPC分类号： G01S11/14 ,  G01P3/64 ,  G01S11/00 ,  G01S11/08 ,  G01S11/10

    摘要： A velocity/distance detection system includes a transmitter and a receiver and detects a distance between the transmitter and the receiver. The transmitter transmits a composite frequency signal. The receiver includes a receiving unit that receives the composite frequency signal transmitted from the transmitter, an operating unit that performs an operation so that a difference in plural power estimate values or amplitude estimate values becomes target precision, a velocity estimating unit that estimates a velocity when the difference becomes the target precision as a velocity of the transmitter or the receiver, and a distance estimating unit that extracts each phase of the plural frequency signals when the difference becomes the target precision, calculates a propagation delay time of the composite frequency signal between the transmitter and the receiver based on each extracted phase, and estimates a distance between the transmitter and the receiver based on the calculated propagation delay time.

    摘要翻译： 的速度/距离检测系统包括发射器和接收器，并检测发送机和接收机之间的距离。 发射机发送的复合频率信号。 该接收器包括：接收单元没有接收该复合频率信号反mitted从发射器到操作单元没有在操作所以没有在多个功率估计值或振幅推定值的差变目标精度，速度推定部也估计的速度当执行 差成为目标精度作为发射器的速度或接收器，以及一个距离估计单元做提取多个频率的信号。当差变为目标精度，每个相计算的之间的复合频率信号的传播延迟时间 发射器和接收器基于每个提取的相位，并估计发射器和基于计算出的传播延迟时间的接收器之间的距离。