Time-frequency characteristics of non-linear systems

被引：29

作者：

Braun, S

Feldman, M

机构：

[1] Faculty of Mechanical Engineering, Techion-Israel Inst. of Technology

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 1997年 / 11卷 / 04期

关键词：

D O I：

10.1006/mssp.1997.0091

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The time-varying characteristics of non-linear systems responding to typical identification signals are addressed and the potential for identifying some time-varying patterns is shown. Specifically, the instantaneous frequency of system responses is analysed, and shown to characterise non-linear behaviour. The analysis is done via the Hilbert transform. Examples include a Duffing oscillator and a memoryless system of the type y = x(3). The possibility of enhancing the time-frequency resolution, as compared to classic Fourier methods, is also briefly addressed. (C) 1997 Academic Press Limited.

引用

页码：611 / 620

页数：10

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