“A machine that is loose can generate a fundamental and the second harmonic. A machine that has a bent shaft can also generate a fundamental and the second harmonic. The only way to determine which problem exists is to determine the phase relationship between the fundamental and the second harmonic. If these two signals are in phase, the shaft is bent. If the two signals are out of phase, the machine is loose.”
为何通过比较基频和谐波之间的相位就可以断定呢?
1.the first three harmonics
2.clip
3.distort
4.two frequencies mix和higt frqqunency will ride the low frequency 两句中的mix和ride分别是什么意思 注意这里ride的意思不是两个频率add
是什么意思呢?知道的请帮忙解答一下
我是说:“two frequencies mix和higt frqqunency will ride the low frequency =两个频率的信号“合成”和高频叠加在低频信号上”说的是信号的调制过程,原文原意不一定说“调制”,因为我并没看原文的全文,“说的是信号的调制过程”是的我个人的理解仅供参考!