The invention discloses a method for designing a mixed traffic flow state estimator in an intelligent network connection environment. The method comprises the following steps: dividing a highway network into a plurality of cells according to a preset position; based on the divided cells, taking traffic flow density as a traffic state variable, and establishing a traffic flow model of the highway network; designing a state observer and a Kalman filter; based on the measured value of the traffic flow density in the cell, respectively obtaining the estimated value of the state observer and the initial pre-estimated value of the Kalman filter, and fusing the estimated values to obtain the final pre-estimated value of the Kalman filter; and according to the final pre-estimated value of the Kalman filter, the prior error covariance matrix and the gain matrix, updating the posterior state estimation value to obtain a final estimation value. According to the method, the fusion algorithm based on the weight is adopted to fuse the state observer and the Kalman filter, the advantages of the state observer and the Kalman filter are combined, and the highway mixed traffic state is accurately estimated and predicted.

    本发明公开了一种智能网联环境下混合交通流状态估计器设计方法,包括:将高速路网根据预设位置划分为若干元胞;基于划分的元胞,以交通流密度作为交通状态变量,建立高速路网的交通流模型;设计状态观测器与卡尔曼滤波器;基于元胞内交通流密度的测量值,分别得到状态观测器的估计值卡尔曼滤波器的初始预估计值,并将上述估计值进行融合,得到卡尔曼滤波器的最终预估计值;根据卡尔曼滤波器最终预估计值、先验误差协方差矩阵和增益矩阵,更新后验状态估计值,得到最终的估计值。本发明采用基于权值的融合算法对状态观测器和卡尔曼滤波器进行融合,结合状态观测器和卡尔曼滤波器优点,对高速公路混合交通状态进行精准的估计和预测。


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    Title :

    Method and device for designing mixed traffic flow state estimator in intelligent network connection environment


    Additional title:

    智能网联环境下混合交通流状态估计器设计方法及装置


    Contributors:
    WANG LIN (author) / GAO JIAN (author) / GUO YUQI (author) / LI HAO (author) / ZHU JIERUI (author) / LI HENGYU (author) / LI WANJUN (author) / TU HUIZHAO (author) / YIN SHENG (author) / HUANG YERAN (author)

    Publication date :

    2024-02-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr



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