多次元スペクトル解析によるガソリンエンジンのパワー寄与評価に関する研究

概要

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This paper presents a method for identifying the vibration source in a multiple input system where the input sources may be coherent with each other. Using multi-dimensional spectral analysis, it was found that the biggest part of the vibration source was generated by the cylinder pressure in the gasoline engine. This analysis is modelled as a multiple input/single output system when the vibration generating system of the gasoline engine is very complicated. In this analysis the concept of residual spectral analysis and the partial coherence function have been applied. Finally, the overall levels for acceleration on the part of cylinder block obtained by multi-dimensional spectral analysis are compared with those measured and calculated by the frequency response function approach. The experimental results have shown good agreement with the calculated results by this method when the input sources are strongly coherent with each other.
一般社団法人日本機械学会の論文
1986-09-25