中文摘要：

介绍了Norden．E．Huang等人提出的Hilbert—Huang变换（HHT）信号分析方法的主要内容、经验模态分解的过程和希尔伯特谱、边际谱的概念等；以虚拟仪器的开发特点及应用为基础，利用软件和硬件相结合的方法，从硬件部分、软件部分、仪器面板3个方面介绍了虚拟式Hilbert—Huang变换信号分析仪的设计，并成功开发了虚拟式Hilbert—Huang变换信号分析仪，为工程信号测试与分析提供了一种全新的方法。

英文摘要：

Hilbert-Huang transform（HHT） is a new method for signal analysis developed by Norden. E. Huang et al in 1998. The concepts for main contents, Empirical mode decomposition, Hilbert spectrum and marginal spectrum of Hil- bert-Huang transform （HHT） are introduced. Based on the characteristics of VI＇ s development and application, combining software and hardware, the designed method, which includes hardware, software and panel for the Virtual Signal Analyzer Based on Hilbert-Huang Transform are introduced. Based on the HHT, combined with virtual instrument technology, a Virtual Signal Analyzer is developed successfully. It has provided a new method for signal test and analysis.