Abstract: This paper analyzes the algorithm that downsampling is imported into EMD decomposition, and a flow chart of the algorithm is given. Then the paper introduces the structure of a fault diagnosis system based on C8051F chip and DSP. An example which is realized in the fault diagnosis system proves the validity of that given algorithm.

摘要： 本文分析了经验模态分解（Empirical Mode Decomposition, EMD）分解过程中引入二抽取的算法原理，并给出了算法流程图。介绍了基于C8051F单片机和DSP的双CPU架构的故障诊断系统构成，给出了本文所述算法在故障诊断系统中的仿真应用实例，验证了算法的有效性。