论文部分内容阅读
在两转向架上安装检查装置的EAST-i轨检车,可在普通线路和新干线部分区段行驶,速度可达275km/h。在三个车轴位置检测钢轨位移,根据不等弦支距法的测量结果,利用数字滤波器处理,得到用于实际轨道维护的10m弦正矢位移。采用光学轨道位移传感器不需与钢轨侧面接触就能检测钢轨位置。在新干线区段,每0.25ms测量钢轨位移传感器的垂向极大和极小值。从检测器垂向位移和测量误差判断,按速度275km/h的速度检查其精度为±0.5mm。在新干线列车和普通线路的混合运营区段,其垂向位移满足4mm基准值。
The EAST-i rail car with inspection device mounted on both bogies can travel on regular lines and in sections of the Shinkansen at speeds up to 275km / h. The rail displacements were measured at three axle positions. Based on the measurement results of the unequal chordal distance method, the digital filter was used to obtain the 10m sine positive displacement for the actual orbit maintenance. Optical rail displacement sensors detect rail positions without touching the sides of the rail. In the Shinkansen section, measure the vertical maximum and minimum of the rail displacement sensor every 0.25ms. From the detector vertical displacement and measurement error to determine, according to the speed of 275km / h speed check the accuracy of ± 0.5mm. In the mixed operation section of Shinkansen trains and regular lines, the vertical displacement meets the 4mm reference value.