| 左右轨道不平顺功率谱转换中心线功率谱的方法 |
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| 引用本文： | 王开云,翟婉明,蔡成标. 左右轨道不平顺功率谱转换中心线功率谱的方法[J]. 交通运输工程学报, 2002, 2(3): 27-29,67 |
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| 作者姓名： | 王开云 翟婉明 蔡成标 |
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| 作者单位： | 西南交通大学,列车与线路研究所,四川,成都,610031;西南交通大学,列车与线路研究所,四川,成都,610031;西南交通大学,列车与线路研究所,四川,成都,610031 |
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| 基金项目： | 高等学校骨干教师资助计划项目 |
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| 摘 要： | 利用关于左、右轨的轨道不平顺与关于轨道中心线的轨道不平顺之关系,借助周期图法谱估计和非线性最小二乘法的曲线拟合,把左、右轨的轨道不平顺功率谱密度等效转换成关于轨道中心线的功率谱密度。最后结合实例,给出了等效转换后的功率谱密度函数表达式的参数。
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| 关 键 词： | 不平顺 功率谱密度 轨道 中心线 等效转换 |
| 文章编号： | 1671-1637(2002)03-0027-03 |
Method of equivalency transform for power spectrum density of track irregularity on central line from on left/right rail |
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| WANG Kai yun,ZHAI Wan ming,CAI Cheng biao. Method of equivalency transform for power spectrum density of track irregularity on central line from on left/right rail[J]. Journal of Traffic and Transportation Engineering, 2002, 2(3): 27-29,67 |
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| Authors: | WANG Kai yun ZHAI Wan ming CAI Cheng biao |
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| Abstract: | On the basis of the transform relation between railway track irregularity on the central line and railway track irregularity on the left/right rail derived from the power spectrum density in space domain,this paper puts forward a new method of equivalency transform for power spectrum density of railway track irregularity on central line from on left/right rail by means of the spectral estimation of cycle graphs and the algorithm of nonlinear least squares. According to the method, the parameters of the PSD function expression are given with an example.2 tabs,2 figs, 8 refs. |
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| Keywords: | irregularity power spectrum density railway track central line equivalency transform |
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