pseudo-cylinder 中文意思是什麼
pseudo-cylinder
解釋
偽圓柱體-
The reassigned smoothed pseudo wigner - ville distribution ( rspwvd ) is introduced, which has less interference and higher resolution than other time frequency distributions like wigner - ville, choi - williams etc. it is used to detect the multi - knocking of engine such as cylinder, piston pin, valve, crank bearing, connecting rod bearing and jib knocking. a new fault diagnosis technique based on the rspwvd for the engine multi - knocking problem is proposed. by comparing the bispectrum and bicoherence of the gear vibration signals, it is demonstrated that bispectrum has an advantage over bicoherence for feature extraction of such signals
第四章首次引入一種重分配方法，得到干擾項少而解析度高的重分配平滑偽魏格納維爾分佈（ rspwvd ） ；對發動機曲軸主軸承響、連桿軸承響、活塞銷響、活塞敲缸響、氣門響和挺桿響等常見機械異響故障振動信號特徵進行了全面地比較分析；通過對各種異響故障特徵信號的分析研究，提出基於rspwvd的發動機多異響故障診斷策略，利用該策略可以準確識別不同的發動機異響故障。 -
Dued to the importance of the flow around the blunt bodies both in the theoretical study and in practice application, the two - dimensional numerical simulation for flow around square cylinder is performed, using pseudo - compressibility method and finite volume method ( fvm ) in the paper
鑒于鈍體繞流在理論研究和實踐中所具有的重要意義，本文嘗試採用人工可壓縮方法和有限體積離散方法，實現對方柱繞流流場的數值模擬。
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