楊世杰,陳建政
(西南交通大學牽引動力國家重點實驗室,四川 成都 610031)
摘要:機車車輛動力學試驗是對鐵路機車車輛的動力學性能進行檢驗的一項重要試驗。試驗方案多、信號通道多、數據量大是這種試驗的特點。依據采集到的試驗數據進行動力學性能指標——平穩性指標的計算和求取各信號的最大值和最大平均值是試驗數據處理的主要工作之一。在試驗數據處理中將涉及到數據分段、分段FFT、多段頻譜求平均以及信號濾波等的處理。運用Matlab語言的矩陣運算功能和強大的數據處理函數包進行試驗數據處理,其程序簡潔、調試方便,大大提高了工作效率。
關鍵詞:Matlab語言;機車車輛;動力學;數據處理
中圖分類號:TP311.5 文獻標識碼:A 文章編號:1672-4984(2006)03-0026-03
Data processing in the dynamic test of rail vehicle based on Matlab
YANG Shi-jie,CHEN Jian-zheng
(Southwest Jiaotong University Traction Power State Key Laboratory,Chengdu 610031,China)
Abstract: Dynamic test is very important for verifying performance of rail vehicle. There are many test cases, many data channels and large volume of sample data in the test. Calculation of ride index and statistic characteristic is the core. Data processing involved data segment, fast fouier transform, segment average and signal filter. It is more efficient in program and debug by means of power of matrix calculation of MTATLAB and its signal process toolset.
Key words:MATLAB;Rail vehicle;Dynamic;Data processing