The invention discloses a short-distance accurate wheel diameter calibration method, which belongs to the technical field of rail transit, and comprises the following steps of: counting the pulse number of a speedometer when a train runs by adopting a double pulse counting method, and analyzing the pulse numbers of the train at different time and different running positions in a calibration area; the first running distance and the second running distance of the train are obtained based on the analysis result, standard error calculation is carried out on the first running distance and the second running distance to obtain a standard error, the train wheel diameter range is obtained according to the standard error, a double-pulse counting method is adopted, two pulse counters are used for counting for multiple times, and the train wheel diameter range is obtained. According to the method, two ordered pair sets are generated, then errors are eliminated by comparing the difference of the two ordered pair sets, higher calibration precision can be obtained within a short wheel diameter calibration distance, meanwhile, the actual beacon sidelobe width is used for counteracting part of errors of the theoretical beacon sidelobe width, and the calibration precision is further improved.
本发明公开了一种短距精确轮径校准方法,属于轨道交通技术领域,通过采用双重脉冲计数法对列车走行时速度计的脉冲数进行统计,并对列车在校准区域内不同时间和不同走行位置的脉冲数进行分析,基于分析结果得到列车的第一走行距离和第二走行距离,对第一走行距离和第二走行距离进行标准误差计算得到标准误差,并根据标准误差得到列车轮径范围,通过采用双重脉冲计数法,利用两个脉冲计数器进行多次计数,生成两个有序对集合,然后通过比较这两个有序对集合的差异来消除误差,可以在较短的轮径校准距离内得到更高的校准精度,同时也利用实际的信标旁瓣宽度去抵消一部分理论信标旁瓣宽度的误差,进一步提高了校准精度。
Short-distance accurate wheel diameter calibration method
一种短距精确轮径校准方法
2025-02-07
Patent
Electronic Resource
Chinese
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