交流电机调速系统振动信号的盲源分离

Blind Source Separation of Vibration Signals of AC Motor Speed Control System

介绍了盲源分离的基本概念以及基于负熵的盲源分离技术。以交流电机变频调速系统振动信号为研究对象,介绍了快速定点独立分量分析(Fast ICA)方法,并通过MATLAB软件编程,对系统的实测振动信号进行了分离。分离结果表明,该算法能够从复杂振动信号中有效地分离出大部分源信号,实现主要振动源信号的提取。

This paper describes the basic concept of the blind source separation and the blind source separation technique based on negentropy.Taking AC motor speed control system for an example,the fast fixed-point independent component analysis（Fast ICA） method was introduced,and vibration signals measured were separated by Matlab programming.The separation results show that the algorithm is available to separate most of source signals from complex vibration signals and extract main vibration source signals.