The main vibration signals can be obtained by reducing its dimensions through matrix conversion in the principal component analyzed, and realize the analysis to the vibration noise source.
运用主成分分析方法，经过矩阵变换，提取振动信号的主要信息，从而实现对振动噪声源的分析。
The radial magnetic force is the primary source of vibration and noise in doubly-salient motor.
双凸极电机的径向磁吸力是电机产生振动与噪声的主要来源。
The vibration source is vibration motor. It features constant operation, convenient maintenance, low noise and long life.
振动源是采用振动角电机驱动，运转平稳，维修方便，噪音低，寿命长。
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