包络分析法在某航行体振动信号处理中的应用

叙述了利用 Hilbert变换的方法对振动信号进行复包络分析的原理 ,编程并计算了某水下航行体复包络的振动信号 ,并对高频振动信号所对应的振动源进行了识别 ,同时对计算结果进行分析并得出相应的重要结论

Application of Envelope Analysis to an Underwater Vehicle Vibration Signal Processing

The vibration at a certain range of high frequency is a criterion for the examination of an underwater vehicle. In order to control the vibration at that range of frequency, it is necessary to identify its vibration source at a corresponding range of low frequency. In the paper, the princple and calculating program of the complex envelope analysis of the vibration at that high frequency by using the Hilbert transform are pressnted. A practicle example for identifying the vibration source by the Hilbert transform over the vibration at high frquency of a certain underwater vehicle is given, and some important conclusions are derived.