• Title/Summary/Keyword: Directonal Spectrum

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Directional Harmonic Wavelet Analysis (방향성 조화 웨이블렛 해석 기법)

  • 한윤식;이종원
    • Journal of KSNVE
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    • v.8 no.5
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    • pp.957-963
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    • 1998
  • A new signal processing technique, the directional harmonic wavelet map(dHWM), is presented to characterize the instantaneous planar motion of a measurement point in a structure from its transient complex-valued vibration signal. It is proven that the directional auto-HWM essentially tracks the shape and directively of the instantaneous planar motion, whereas the phase of the directional cross-HWM indicates its inclination angle. Finally, the technique is suessfully applied to an automobile engine for characterization of its transient motion during crank-on/idling/engine-off.

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