trend character extraction 趋势特征提取
Two important algorithm of Qualitative Trend Analysis (QTA) for process fault diagnosis is systematically introduced—trend extraction algorithm and trend identification algorithm.
本文系统介绍用于过程故障诊断的定性趋势分析(Qualitative Trend Analysis，QTA)两个重要算法：趋势提取算法和趋势识别算法。
参考来源 - 定性趋势分析在故障诊断中的应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
To deal with this problem, comparison is made between the empirical mode decomposition(EMD) and the wavelet method in terms of signal trend extraction.
研究了强噪声混合条件下微弱信号的经验模式分解（EMD）问题，提出了一种基于随机共振降噪的EMD分解方法。
A statistical feature extraction technique is proposed in order to find a trend in detection of defects.
统计特征提取技术是建议，以便找到一种趋势，检测的缺陷。
According to the analysis, the development trend of extraction apparatus was predicted, and it provided some references for the research o...
通过上述分析，预测萃取设备的发展趋势，为新型设备的研发提供参考。
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