The invention discloses a track smoothness evaluation method based on midline point cloud data, and the method comprises the steps: collecting track line shape data, obtaining the transverse deviation and vertical deviation of a left track and a right track relative to a design line shape, and removing abnormal data, thereby obtaining original data; setting an interception wavelength range, and filtering noise in the original data by using a filter to obtain processed track irregularity data; performing VMD multi-scale decomposition on the track irregularity data to obtain a plurality of IMF components; performing parameter optimization on K and alpha components in the VMD by using a PSO algorithm, and performing VMD decomposition according to optimization parameters to obtain a plurality of optimal IMF components; and performing Hilbert transformation on the plurality of IMF optimal components to obtain track irregularity instantaneous energy density distribution, and evaluating the track smoothness. The method is suitable for track data collected in most track traffic scenes, and provides technical support for improving track maintenance efficiency.

    本发明公开了一种基于中线点云数据的轨道平顺性评价方法,包括:采集轨道线形数据,获取左、右轨相对于设计线形的横向偏差与垂向偏差并剔除异常数据,得到原始数据;设定截取波长范围,使用滤波器过滤原始数据中的噪声,得到处理后的轨道不平顺数据;对轨道不平顺数据进行VMD多尺度分解,得到多个IMF分量;使用PSO算法对VMD中的K和α分量进行参数寻优,并根据寻优参数进行VMD分解得到多个最优IMF分量;对多个IMF最优分量进行Hilbert变换,得到轨道不平顺瞬时能量密度分布,并对轨道平顺性进行评价。本发明适用于大部分轨道交通场景下采集的轨道数据,为提高轨道维修养护效率提供技术支撑。


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    Title :

    Track smoothness evaluation method based on midline point cloud data


    Additional title:

    一种基于中线点云数据的轨道平顺性评价方法


    Contributors:
    LIU CHANGRUI (author) / DONG ZHENCHUAN (author) / JIN WEIFENG (author) / TAN SHEHUI (author) / YANG XINGWANG (author) / HU RONGYAO (author) / SHANG JINGUANG (author) / LUO BAOLIN (author) / BAI XIAOMING (author) / ZHANG XIANZHOU (author)

    Publication date :

    2023-04-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen



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