3 ms·
>or each plant you build you need the exact position of each mirror, the oven chamber and the motion of the sun through the day and year Yeah, depending on the
by JshWright 7y ago
>or each plant you build you need the exact position of each mirror, the oven chamber and the motion of the sun through the day and year
Yeah, depending on the level of precision required, there are _tons_ of variables that could have an impact here. Year to year the angle of the sun changes slightly on any given solar date, as various components of the Earth's orbit "wobble" (axial tilt, eccentricity, precession, etc). Even on an hour by hour basis, thermal expansion could have a significant impact. Any significant structure is going to settle to some extent over time, etc...
- SiempreViernes 7y agoThe motion of the Earth in space is very well determined and studied; the thermal expansion and deformation of the structure is most likely the dominant source of uncertainty for the pointing.
- splittingTimes 7y agoI am wondering if these effects are really important and warrant the use of "AI". If so, then what is the size of the target? If it is only some cm^2, then they still have a long way to go till it can handle industrial sized problems. Once you are at industrial scale, do you still need that kind of accuracy??
- pbhjpbhj 7y agoI don't think it's about warranting "complex AI" it's that this solution plays out as easier to apply in practice. I think it's a scale issue, each mirror needs the same apparatus and AI, but doing it traditionally with reactive optics would need a multitude of different pieces?
- sanxiyn 7y agoThese effects are really important. That's why previous attempts failed.
- mlyle 7y agoGround subsidence and related structural effects on the mirrors and mirror field are the main issue. But also the position of the sun in the sky is not predictable enough to do this completely open loop because of variances in atmospheric refraction... but it's pretty easily measured at the site.