QUAN Huiming, DAI Yuxing. Harmonic and Interharmonic Signal AnalysisBased on Generalized S-Transform[J]. Chinese Journal of Electronics, 2010, 19(4): 656-660.
Citation: QUAN Huiming, DAI Yuxing. Harmonic and Interharmonic Signal AnalysisBased on Generalized S-Transform[J]. Chinese Journal of Electronics, 2010, 19(4): 656-660.

Harmonic and Interharmonic Signal AnalysisBased on Generalized S-Transform

  • Received Date: 2009-11-01
  • Rev Recd Date: 2009-12-01
  • Publish Date: 2010-11-25
  • This paper presents a new approach to analyzeharmonics using the Generalized S-transform (GST)and clonal selection algorithm. After Comparing the effectof p and k in GST on the harmonics detection, a modifiedGST was adopted, in which the k parameter waschanged with the different frequency band, and the frequenciesof interharmonics detected mistakenly were correctedthrough the instantaneous frequencies. The harmonicsamplitudes and phases given by GST were withsome error, so the clonal selection algorithm was used tooptimize them, and the detail optimization process wasdescribed in this paper. The simulation results show thatthe method could analyze the harmonics and interharmonicsaccurately, and its performance is far better than FFTespecially in analyzing the interharmonics and transientharmonics.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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