underdetermined 中文意思是什麼
underdetermined
解釋
欠定的-
The main contents of this thesis include : ( 1 ) summarize and analysis of the theories on vibration transmission through rolling element bearings ( 2 ) based on the threshold setting and signal ’ s statistical approach, a method for solving the problems of denoise was developed ( 3 ) using sparsity and clustering, the method and hypotheses for underdetermined blind source separation was studied ( 4 ) the method based on potential function clustering was given for underdetermined blind source separation of noisy signals based on the assumption that the input distribution is sparse and the mixture procedure is linear, the attenuation matrix and the delay matrix were estimated by clustering. the approach was experimentally illustrated for the case of m = 2. the separation of the signals from bearing test bed proved that the given methods are available and reliable
在需求分析和研究現狀分析的基礎上，本論文針對如下內容進行了重點研究: （ 1 ）以滾動軸承為例，對旋轉機械振動信號的傳輸進行了歸納分析; （ 2 ）通過設定某一門限並研究信號間的統計特性，研究了旋轉機械振動信號的盲源分離過程中噪聲消減策略; （ 3 ）應用稀疏信號分析和聚類分析方法，對盲源分離中欠確定問題的假設條件進行探討並對分離方法進行了分析; （ 4 ）採用基於勢函數聚類分析的方法，研究了欠確定前提下含噪聲測量過程中信號盲源分離方法。 -
In actual design, the choice between use of an attribute and an element body is frequently underdetermined by design considerations and or is contextually sensitive
在實際設計中，設計考慮事項中常常不能確定是選擇使用屬性主體還是選擇使用元素主體，並且（或者）這樣的選擇在上下文中很敏感。 -
Based on these conditions, this thesis describes the methods for the blind source separation of noisy harmonic signals from rotating machine when the underlying system is underdetermined ( i. e. separation of n sources from m mixtures, when m < n )
本論文主要以「滾動軸承-轉子」系統為對象，研究存在噪聲情況下，當測試傳感器的數量少於信號源的數量（欠確定）時，旋轉機械振動信號的盲源分離問題。
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