The invention discloses an urban rail vehicle state monitoring and diagnosing method and system, and relates to the technical field of urban rail vehicle operation quality monitoring, and the system comprises a vehicle body vibration signal acquisition module, a vibration signal time-frequency conversion module, a stability index calculation module, a characteristic index calculation module, a vehicle state diagnosing module and the like. Because the natural vibration frequency of each part of the vehicle is the inherent attribute of the natural vibration frequency, the method comprises the following steps: presetting a plurality of frequency intervals, determining a vehicle shaking frequency concentration area and a vehicle shaking frequency concentration area in the frequency intervals, and then extracting the characteristic index of each frequency interval; the characteristic indexes and the stability indexes are combined to judge the vehicle shaking and shaking states, and compared with vehicle state judgment in the vehicle shaking and shaking states only through the stability indexes and the comfort degree indexes, the vehicle shaking and shaking states are judged on the basis of the more refined frequency domain characteristic indexes; therefore, the actual state of the vehicle in the vehicle shaking or shaking state can be judged more sensitively and accurately.

    本发明公开了一种城轨车辆状态监测诊断方法及系统,涉及城轨车辆运行品质监测技术领域,所述系统包括车体振动信号采集模块、振动信号时频变换模块、平稳性指标计算模块、特征指标计算模块和车辆状态诊断模块等。因为车辆各部件的固有振动频率是其具有的固有属性,本发明通过预设置多个频率区间以及确定出频率区间中的晃车频率集中区和抖车频率集中区,然后提取各个频率区间的特征指标,将特征指标和平稳性指标结合来进行抖车和晃车状态的判断,相比只通过平稳性指标和舒适度指标进行抖车和晃车状态下的车辆状态判断而言,基于更加精细化的频域特征指标,实现了对抖车或晃车状态下车辆实际状态更为灵敏和精确的判断。


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    Titel :

    Urban rail vehicle state monitoring and diagnosing method and system


    Weitere Titelangaben:

    一种城轨车辆状态监测诊断方法及系统


    Beteiligte:
    NIE YUNBIN (Autor:in) / FAN YIWEI (Autor:in) / DU HONGMEI (Autor:in) / LI FENGLIN (Autor:in) / YANG YANG (Autor:in) / LI FUZHONG (Autor:in) / HU XIANZE (Autor:in) / BU XIANLI (Autor:in)

    Erscheinungsdatum :

    2023-12-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen



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