g*****g
发帖数: 45 | 1 I am doing experiment using laser to get the interference pattern.
But because of the vibration, the fringes are never stable. I've tried to
build feedback circuit for it but I've never succeeded.
Anyone has experience about it before or know things about that, please reply.
Many thanks. |
n*******d
发帖数: 650 | 2 is it harmonic vibration or random?
how long is stable?
reply.
【在 g*****g 的大作中提到】
: I am doing experiment using laser to get the interference pattern.
: But because of the vibration, the fringes are never stable. I've tried to
: build feedback circuit for it but I've never succeeded.
: Anyone has experience about it before or know things about that, please reply.
: Many thanks.
|
g*****g
发帖数: 45 | 3 Very random. stay like 2 seconds.
【在 n*******d 的大作中提到】
: is it harmonic vibration or random?
: how long is stable?
:
: reply.
|
e**n
发帖数: 478 | 4 use a camera to get a video clip of your pattern and analysis it frame by frame,
find the characteristic of the movement before you decide what feedback
scheme should be used.
【在 g*****g 的大作中提到】
: Very random. stay like 2 seconds.
|
n*******d
发帖数: 650 | 5 我也这么想。另外：是否一定要stable呢？一个frame是否能说明问题？
frame,
【在 e**n 的大作中提到】
: use a camera to get a video clip of your pattern and analysis it frame by frame,
: find the characteristic of the movement before you decide what feedback
: scheme should be used.
|
