摘要
在飞机交流供电特性测试系统的校准工作中,对非平稳信号的处理工作是校准工作的重点。本论文探讨了Hilbert变换和滑动正弦波拟合两种提取交流非正弦信号包络曲线的方法,通过比较计算两个飞机供电系统的特征信号的结果,得出结论:滑动正弦波拟合计算结果在全数据段准确度较高,能够满足飞机供电测试系统的校准工作的要求。
Processing of non-stationary signals is the focus in the calibration work of the aircraft AC power supply test system. This paper ex- plores two ways, which are Hilbert transform and sliding sine wave curve-fit, to extract the AC non-sinusoidal signal envelope curve. By compa- ring the calculated results of characteristic signal of the two aircraft power supply systems, we obtain the conclusions that the calculation result of sliding sine wave curve-fit has higher precision in the whole data segment, which is able to meet the requirements of the aircraft power supply test system calibration.
出处
《计测技术》
2012年第4期9-13,共5页
Metrology & Measurement Technology
