| 基于谱分析的电气化铁路弓网接触压力平稳性分析 |
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| 引用本文： | 张晓晓,范福强,朱玲.基于谱分析的电气化铁路弓网接触压力平稳性分析[J].电气开关,2014(1):49-50. |
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| 作者姓名： | 张晓晓 范福强 朱玲 |
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| 作者单位： | 西南交通大学电气工程学院,四川成都610031 |
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| 摘 要： | 针对弓网间动态接触压力信号的平稳性问题,提出一种基于谱分析的电气化铁路弓网接触压力平稳性分析方法。该方法利用周期图法求取接触压力信号的谱密度,利用统计学里的法则和两因素方差分析,通过分别检验接触压力数据的均值函数和自协方差函数来判定接触压力信号的平稳性。分析结果表明,基于谱分析的方法可以有效地检验动态接触压力信号的平稳性且检验结果具可靠性,这对进一步分析处理接触压力信号提供指导作用。
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| 关 键 词： | 接触压力 平稳性检验 自协方差函数 |
Analysis of the Stationarity of the Contact Force between the Pantograph and the Contact Line via Spectral Analysis |
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| ZHANG Xiao-xiao,FAN Fu-qiang,ZHU Ling.Analysis of the Stationarity of the Contact Force between the Pantograph and the Contact Line via Spectral Analysis[J].Electric Switchgear,2014(1):49-50. |
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| Authors: | ZHANG Xiao-xiao FAN Fu-qiang ZHU Ling |
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| Affiliation: | ( School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China) |
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| Abstract: | Testing the stationarity of the dynamic contact force signal between the Pantograph and the Contact line is an important preprocessing step before studying its statistical feature. The method testing the stationarity of the contact force via spectral analysis is proposed, in which the periodogram of the contact force is obtained, and the rule and two-ways ANOVA in the statistics are used, and the mean value function and auto-covariance function are respectively checked to determine the stationarity of the contact force. |
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| Keywords: | contact pressure stationary test auto-covariance function |
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