适用于现场的非线性频谱分析技术

A Nonlinear Spectral Analyzing Method for Engineering Application

本文从辨识算法和硬件设计上综合考虑 ,论述了非线性频谱分析仪的设计过程。设计中综合使用数字和模拟的方法 ,解决了数据采样折叠噪声、非线性频谱分析方法建立等核心问题。最后 ,详细给出了应用试验。试验结果表明 ,整个仪器简洁高效 ,已经达到可以推广应用于工程试验研究的程度。

In this paper, a nonlinear spectral analyzer is completed based on the studying of identification method and hardware design. The digital and analog methods are both used to solve many important problems of instrument design, such as spectral fold over and nonlinear frequency analysis method. The instrument is validated by the application at the end of the paper. The result indicates that the instrument is very efficient and adaptive to engineering application.