I've thought about whether you could do it radially with a modified bluray drive...
To avoid need for precise even spacing of marks, could you have one primary pulse per rev and many minor ones...
-
-
...and measure timing between each one (average over many revs) before start to get phase offsets for each to feed into PLL?
-
Depends on whether you need dimensional accuracy or just track-to-track repeatability I guess. That sounds like it'd work for the latter.
-
I think it would work for either, no? Once you correct for phases of minor marks, everything is stable relative to the primary one.
-
I think the issue is you can't easily correct for the spindle not being perfectly centered and the like. That'll introduce consistent error.
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.