用小波分析诊断变频率外力作用下自激振荡系统的同步
Diagnostics of the Synchronization of Self-Oscillatory Systems by an External Force with Varying Frequency with the Use of Wavelet Analysis
摘要：
提出了一种基于连续小波变换的故障诊断方法。该方法使得可以诊断由具有线性调制频率的外力锁定的自激振荡器的振荡的同步的存在，并且可以将这种情况与外部信号泄漏到自激振荡中的情况区分开;即，在不改变自振荡频率的情况下对信号求和。该方法的效率与使用的范德波尔发电机和实验生理数据作为例子。
英文摘要：
A diagnostics method based on a continuous wavelet transform is proposed. This method makes it possible to diagnose the presence of synchronization of the oscillations of a self-excited oscillator locked by an external force with a linearly modulated frequency and to distinguish such a situation from the case when an external signal leaks into self-oscillations; i.e., the signals are summed without a change in the self-oscillation frequency. The method's efficiency is shown with the use of a Van der Pol generator and experimental physiological data as examples.
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