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本文讨论了时间序列分析在结构振动系统传递函数分析中的应用,阐述了应用时间序列的AR模型进行振动传递函数分析的方法,并用这种方法识别了C616车床主轴系统试验台的振动传递函数。对由观测噪声引起的误差进行了分析,提出了采用多次平均方法提高传递函数时间序列分析精度的改进措施。
This paper discusses the application of time series analysis to the transfer function analysis of structural vibration system, and expounds the method of vibration transfer function analysis using time series AR model. The vibration transfer function of C616 lathe spindle system test bench is identified by this method. The error caused by observing noise is analyzed, and the improvement measures to improve the accuracy of time series analysis of transfer function by using multiple averaging methods are proposed.