Principle component analysis is based on multi-statistics method, and turning into an important way to proceed data for production monitoring and quality control.
主成分分析属多元统计方法，正逐步成为控制领域中一种重要的数据处理方法，用于生产监测和质量控制。
The theoretic analysis is accomplished on the circuit topology, principle, harmonic detecting method, control method and circuit designing of Parallel Hybrid Active Power Filter (PHAPF).
其次，文章重点对电容注入方式的并联混合型有源电力滤波器的电路结构、工作原理、谐波检测方法、控制方式、电路设计进行了理论分析。
The new forecast analysis method on the flight accident-rate and the flight incident-rate is discussed by using the forecast method based on grey control principle.
基于灰色预测理论，给出了飞行事故率和事故症候率预测分析的新方法。
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